JP7028415B2 - A wave generator, a program to be executed by a computer, and a computer-readable recording medium on which the program is recorded. - Google Patents

Description

The present invention relates to an elemental wave generator, a program to be executed by a computer, and a computer-readable recording medium on which the program is recorded.

In the 5th generation mobile communication system, it is necessary to secure a further frequency band in order to satisfy various demands for communication performance. On the other hand, a technique for sharing a frequency that is not used in a local place or time is attracting attention (Non-Patent Document 1).

Then, a frequency sharing system for a frequency of 6 GHz or less suitable for mobile communication is being studied.

Ministry of Internal Affairs and Communications, “Radio Policy 2020 Roundtable Report”, June 2016. Matsuno et al., "Efforts for frequency sharing between different wireless systems in 5th generation mobile communication systems," Academic Techniques, RCS116, Oct.2016. Waka, et al., "Wideband spectrum measurement assuming frequency sharing," Shingaku Sodai, B-16-20, Sep. 2016.

However, in the frequency sharing system, there is no model showing how radio waves (elementary waves) are generated on the frequency axis and the time axis.

Therefore, according to the embodiment of the present invention, there is provided an elemental wave generator that generates an elemental wave distributed in the frequency axis direction and the time axis direction.

Further, according to the embodiment of the present invention, a program for causing a computer to generate elementary waves distributed in the frequency axis direction and the time axis direction is provided.

Further, according to an embodiment of the present invention, there is provided a computer-readable recording medium in which a program for causing a computer to generate elementary waves distributed in the frequency axis direction and the time axis direction is recorded.

(Structure 1)
According to an embodiment of the present invention, the elemental wave generator includes a frequency generating means, a duration generating means, a power generating means, and an elemental wave generating means. The frequency generating means generates the frequency of the elementary wave according to the Poisson process within the frequency bandwidth used for wireless communication. The duration generation means generates a first duration, which is the duration during which the elementary wave is generated, according to an exponential distribution. The power generation means generates an arbitrary power value selected from the range of power values defined by the minimum value and the maximum value of the electric power of the radio wave as the raw wave power. The elemental wave generating means generates an elemental wave having an elemental wave power at the generated frequency from the time when the use of the radio wave is started until the first duration elapses.

The elemental wave generator according to the embodiment of the present invention generates the elemental wave frequency according to the Poisson process, generates the elemental wave duration according to the exponential distribution, and selects an arbitrary power value from the range of the radio wave power value. Generates unwavering power. Then, the elemental wave generator generates an elemental wave having an elemental wave power at the generated frequency from the time when the use of the radio wave is started until the first duration elapses.

Therefore, it is possible to generate elementary waves distributed in the frequency axis direction and the time axis direction.

(Structure 2) In the configuration 1, the frequency generating means executes the first process of generating a number of frequencies corresponding to the average wave number in the frequency bandwidth according to the Poisson process. The duration generation means executes a second process of generating a first duration of a number corresponding to the average wave number according to an exponential distribution. The power generating means executes a third process of generating a number of raw wave powers corresponding to the average number of raw waves.

According to the configuration 2, it is possible to generate elementary waves having an average number of elementary waves distributed in the frequency axis direction and the time axis direction.

(Structure 3)
In the second configuration, the duration generating means determines whether or not the generated first duration has ended in the second process when the raw wave power generated by the power generating means is not zero, and the second process is performed. It is repeatedly executed to generate the first duration according to the exponential distribution until it is determined that the duration of 1 has ended.

According to the configuration 3, it is confirmed that the first duration has expired.

Therefore, the elementary wave can be generated accurately.

(Structure 4)
In the configuration 2 or 3, the duration generating means further sets the elementary wave power to zero, and sets the second duration, which is the duration in which the elementary wave is not generated, by the number corresponding to the average elementary wave number. The fourth process to be generated is executed.

According to the configuration 4, the period during which the elemental wave is not generated is generated by the number corresponding to the average elemental wave number.

Therefore, it is possible to generate a number of elementary waves corresponding to the average number of elementary waves by setting a period in which the elementary waves are generated and a period in which the elementary waves are not generated.

(Structure 5)
In the configuration 4, the duration generation means determines whether or not the generated second duration has ended in the fourth process, and is an exponential until it is determined that the second duration has ended. Iteratively repeats generating a second duration according to the distribution.

According to the configuration 5, it is confirmed that the second duration has expired.

Therefore, it is possible to accurately set the period during which the elemental wave is not generated and generate the elemental wave.

(Structure 6)
In any of the configurations 2 to 5, the second process, the third process, and the fourth process are executed in parallel by the average wave number.

Therefore, it is possible to shorten the time for generating the elementary wave of the average elementary wave number.

(Structure 7)
In the configuration 2, the frequency generating means calculates the average wave number per unit time corrected so as to be close to the measured average wave number per unit time in the first process, and per corrected unit time. A number of frequencies corresponding to the average wave number of is generated according to the Poisson process. In the second process, the duration generation means generates a third duration obtained by correcting the first duration so as to be close to the measured duration of the radio wave. The elemental wave generating means generates an elemental wave having an elemental wave power at a frequency generated by the frequency generating means from the time when the use of the radio wave is started until the third duration elapses.

According to the configuration 7, it is possible to generate an elementary wave having a small error from the actually measured radio wave.

(Structure 8)
In the configuration 7, in the first process, the frequency generating means is (measured average wave number per unit time) × the first average wave number obtained by the first correction coefficient is measured per unit time. The first correction coefficient is determined so as to be close to the average prime wave number of, and the determined first correction coefficient is multiplied by the measured average prime wave number per unit time to calculate the second average prime wave number. , Generates a number of frequencies corresponding to the calculated second average wave number. In the second process, the duration generating means is such that the fourth duration obtained by (measured radio wave duration) × second correction coefficient is close to the measured radio wave duration. A correction coefficient of 2 is determined, and the determined second correction coefficient is multiplied by the measured duration of the radio wave to generate a third duration.

According to the configuration 8, it is possible to suppress the bias generated in the sample when obtaining the probability function (statistical value assuming the number of wireless samples) from the actually measured data consisting of a finite number of samples, and generate the elementary wave.

(Structure 9)
Further, according to an embodiment of the present invention, the program includes a first step in which the frequency generating means generates a raw wave frequency according to a Poisson process within the frequency bandwidth used for wireless communication, and a duration generating means. However, the second step in which the first duration, which is the duration in which the elementary wave is generated, is generated according to the exponential distribution, and the power generation means is the power specified by the minimum value and the maximum value of the radio wave power. The third step of generating an arbitrary power value selected from the value range as the raw wave power, and the first duration from the time when the radio wave generation means starts using the radio wave at the generated frequency. It is a program for causing a computer to execute a fourth step of generating an elementary wave having an elementary wave power until the elapse.

By causing a computer to execute the program according to the embodiment of the present invention, the frequency of the elementary wave is generated according to the Poisson process, the duration of the elementary wave is generated according to the exponential distribution, and an arbitrary power value is generated from the range of the power value of the radio wave. Select to generate raw wave power. Then, at the generated frequency, an elemental wave having an elemental wave power is generated from the time when the use of the radio wave is started until the first duration elapses.

Therefore, it is possible to generate elementary waves distributed in the frequency axis direction and the time axis direction.

(Structure 10)
In the configuration 9, the frequency generating means performs the first process of generating a number of frequencies corresponding to the average wave number in the frequency bandwidth according to the Poisson process in the first step. In the second step, the duration generating means performs a second process of generating a first duration of a number corresponding to the average wave number according to an exponential distribution. In the third step, the power generation means executes a third process of generating a number of elementary wave powers corresponding to the average number of elementary waves.

According to the configuration 10, by causing the computer to execute the program, it is possible to generate elementary waves having an average number of elementary waves distributed in the frequency axis direction and the time axis direction.

(Structure 11)
In the configuration 10, when the raw wave power generated by the power generating means is not zero in the second step, the duration generating means has finished the first duration generated in the second process. It is determined whether or not, and the generation of the first duration according to the exponential distribution is repeatedly executed until it is determined that the first duration has ended.

According to the configuration 11, it is confirmed that the first duration has ended by causing the computer to execute the program.

Therefore, the elementary wave can be generated accurately.

(Structure 12)
In the configuration 10 or the configuration 11, the duration generating means further sets the elementary wave power to zero in the second step, and averages the second duration, which is the duration in which the elementary wave is not generated. The fourth process of generating a number corresponding to the wave number is executed.

According to the configuration 12, by causing the computer to execute the program, the period during which the elementary waves are not generated is generated by the number corresponding to the average number of elementary waves.

Therefore, it is possible to generate a number of elementary waves corresponding to the average number of elementary waves by setting a period in which the elementary waves are generated and a period in which the elementary waves are not generated.

(Structure 13)
In the configuration 12, the duration generation means determines whether or not the generated second duration has ended in the fourth process of the second step, and the second duration has ended. Iteratively repeats the generation of the second duration according to the exponential distribution until it is determined.

According to the configuration 13, it is confirmed that the second duration has ended by causing the computer to execute the program.

Therefore, it is possible to accurately set the period during which the elemental wave is not generated and generate the elemental wave.

(Structure 14)
In any of the configurations 10 to 13, the second process, the third process and the fourth process are executed in parallel by the average wave number.

According to the configuration 14, the time for generating the elementary wave of the average elementary wave number can be shortened by causing the computer to execute the program.

(Structure 15)
In any of the configurations 10 to 14, the second process, the third process and the fourth process are executed a predetermined number of times according to the time required for the simulation.

According to the configuration 15, the simulation can be performed using the generated raw wave by causing the computer to execute the program.

(Structure 16)
In the configuration 10, the frequency generating means calculates the average wave number per unit time corrected so as to be close to the measured average wave number per unit time in the first step, and per corrected unit time. A number of frequencies corresponding to the average wave number of the above are generated according to the Poisson process. In the second step, the duration generation means generates a third duration obtained by correcting the first duration so as to be close to the measured duration of the radio wave. In the fourth step, the elemental wave generating means has an elemental wave power at the frequency generated by the frequency generating means from the time when the use of the radio wave is started until the third duration elapses. Occurs.

According to the configuration 16, by causing the computer to execute the program, it is possible to generate an elementary wave having a small error from the actually measured radio wave.

(Structure 17)
In the configuration 16, the frequency generating means has, in the first step, (measured average wave number per unit time) × first average wave number obtained by the first correction coefficient per unit time measured. The first correction coefficient is determined so as to be close to the average prime wave number of, and the determined first correction coefficient is multiplied by the measured average prime wave number per unit time to calculate the second average prime wave number. , Generates a number of frequencies corresponding to the calculated second average wave number. In the second step, the duration generating means is set so that the fourth duration obtained by (measured radio wave duration) × second correction coefficient is close to the measured radio wave duration. A second correction coefficient is determined, and the determined second correction coefficient is multiplied by the measured duration of the radio wave to generate a third duration.

According to the configuration 17, by letting the computer execute the program, the bias that occurs in the sample when the probability function (statistical value assuming the number of wireless samples) is obtained from the actually measured data consisting of a finite number of samples is suppressed. Can generate waves.

(Structure 18)
Further, according to an embodiment of the present invention, the recording medium is a computer-readable recording medium on which the program according to any one of configurations 9 to 17 is recorded.

It is possible to generate elementary waves having an average number of elementary waves distributed in the frequency axis direction and the time axis direction.

It is a schematic diagram of the elemental wave generator according to Embodiment 1 of this invention. It is a figure which shows the relationship between a received signal strength (RSSI) and a frequency. It is a conceptual diagram of an elementary wave. It is a conceptual diagram which shows the distribution of a frequency f _n . It is a flowchart for demonstrating operation of the elemental wave generator shown in FIG. It is a schematic diagram of the elemental wave generator according to Embodiment 2. It is a flowchart for demonstrating the operation of the elemental wave generator shown in FIG. It is a flowchart for demonstrating the detailed operation of step S24 shown in FIG. 7. It is a flowchart for demonstrating the detailed operation of step S25 shown in FIG. 7. It is a flowchart for demonstrating the detailed operation of step S26 shown in FIG. 7. It is a schematic diagram of the elemental wave generator according to Embodiment 3. It is a figure which shows the relationship between the actually measured received power and a frequency. It is a figure which shows the actual measurement example of the wide band spectrum. It is a flowchart for demonstrating operation of the elemental wave generator shown in FIG. It is a figure which shows the comparison between the measured value and the calculated value of the duration, the average element wave number and the spatial density of an element wave. It is a schematic diagram of the elemental wave generator according to Embodiment 4. It is a flowchart for demonstrating the operation of the elemental wave generator shown in FIG. It is a flowchart for demonstrating the detailed operation of step S50 shown in FIG. It is a flowchart for demonstrating the detailed operation of step S52 shown in FIG. It is the schematic of the terminal apparatus in application example 1. FIG. It is a flowchart for demonstrating the operation of the terminal apparatus shown in FIG. It is a schematic diagram of the detection device in application example 2. It is a flowchart for demonstrating operation of the detection apparatus shown in FIG.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals and the description thereof will not be repeated.

[Embodiment 1]
FIG. 1 is a schematic view of an elemental wave generator according to the first embodiment of the present invention. With reference to FIG. 1, the elemental wave generating apparatus 10 according to the first embodiment of the present invention includes a frequency generating means 1, a duration generating means 2, a power generating means 3, and an elemental wave generating means 4.

The frequency generating means 1 generates a frequency f _n (n is a positive integer) according to a Poisson process within the frequency bandwidth used for wireless communication in a frequency sharing system, and the generated frequency f _n is used as an elementary wave generating means 4. Output to.

The duration generation means 2 generates the duration _Tn of the generated elementary wave according to the exponential distribution, and outputs the generated duration _Tn to the elementary wave generation means 4.

The power generation means 3 generates an arbitrary power value selected from a range of power values defined by a minimum value and a maximum value of radio wave power as a raw wave power P _n , and generates the generated raw wave power P _n . It is output to the element wave generating means 4.

The elemental wave generating means 4 receives the frequency f _n from the frequency generating means 1, the duration _Tn from the duration generating means 2, and the elementary wave power _Pn from the power generating means 3.

Then, the elemental wave generating _means 4 generates an elemental wave _{wv_n} having an elemental wave power _Pn at a frequency fn from the time when the use of the radio wave is started until the duration Tn elapses.

FIG. 2 is a diagram showing the relationship between the received signal strength (RSSI) and the frequency. In FIG. 2, the vertical axis represents the received signal strength (RSSI) and the horizontal axis represents the frequency. Further, the curve k1 shows the relationship between the received signal strength (RSSI) averaged in the measurement period and the frequency, and the curve k2 shows the relationship between the maximum value of the received signal strength (RSSI) in the measurement period and the frequency. The curves k1 and k2 show the measured values of the received signal strength (RSSI) at a certain point.

With reference to FIG. 2, various frequencies are used, and some frequencies have a noise level when averaged over time.

This indicates that radio waves are used not only continuously, but also discretely or at a certain cycle.

Therefore, in the embodiment of the present invention, in view of the measured value of the received signal strength, the elemental wave generator 10 generates the elemental wave wv_n by the method described in detail below.

The start of the use of the radio wave of the frequency f within the frequency bandwidth bw is defined as the generation of the elementary wave. Consider the start of radio wave use as a traffic model, and apply the Poisson process as a general model.

Then, as shown in the following equation, the frequency f _n is generated at the frequency resolution Δbw by the Poisson process.

In equation (1), m is the average wave number. Further, m / bw in the equation (1) is for normalizing the generated frequency f _n . Then, in the equation (1), the frequency f _n is a function of the frequency resolution Δbw.

Further, generating the frequency f _n according to the equation (1) corresponds to generating the frequency f _n according to the traffic model.

According to the traffic model, multiple vehicles distributed according to the Poisson process drive on the road.

More specifically, it is as follows. Observe a car running on the road at a fixed point. At this time, several cars crossing in front of the observer often pass in groups. It is said that this is because it is psychologically easier for a car driver to have a car in front of and behind him than to drive on the road alone.

Observing this situation again at a fixed point, it can be said that the passage of automobiles is biased. To explain this mathematically, the Poisson process is close to it.

Consider the occurrence of calls in communication. The occurrence of calls in an individual is random, but when considered at a certain time, a bias occurs in the same manner as the passage of the above-mentioned automobile, for example, making a call all at once immediately after the start of work. Therefore, the bias is realized by the Poisson process. In particular, here, the process of its generation has been explained based on the time axis in the explanation so far, but the point that this is extended to the frequency axis is a big difference from the conventional traffic model.

By applying such a traffic model, the frequency f _n is generated with the frequency resolution Δbw according to the equation (1). Therefore, when the traffic model is applied to generate the frequency f _n , the frequency f _n is distributed according to the Poisson process. The idea of applying a traffic model to generate a frequency f _n is new and has not been considered by those skilled in the art of wireless communication.

The continuation model of the element wave is defined until the element wave of the frequency f _n is generated and the transmission of the radio wave is interrupted. Since the duration of a general call is explained by the exponential distribution, the duration of the elementary wave is defined by the exponential distribution.

That is, the duration _Tn is expressed by the following equation.

In the equation (2), Δt is the time resolution, and t is the average existence time of the elementary wave. Then, in the equation (2), the duration _Tn is a function of the time resolution Δt.

Therefore, the duration generation means 2 generates the duration _Tn according to the equation (2).

Since the power of the elementary wave is determined by the dynamic range of the measurement system or the positional relationship between the measurement location and the wave source, the electric power of the elementary wave is arbitrarily set. That is, the raw wave power _Pn is an arbitrary power value selected from the range of power values defined by the minimum value and the maximum value.

Therefore, the power generating means 3 arbitrarily selects a power value from the range of the power value defined by the minimum value and the maximum value, and generates the raw wave power _Pn .

FIG. 3 is a conceptual diagram of a bare wave. With reference to FIG. 3, the elemental waves wv_1 to wv_n are defined by a frequency f _n , a duration T _n , and an elementary wave power P _n .

_The elemental wave _{wv_1} is generated at the frequency f1 when the use of the radio wave is started at the time t1, and has the elemental wave power _P1 for the duration | t2 _{- t1} | from the _time t1. The elemental wave _{wv_2} is generated at the frequency f2 when the use of the radio wave is started at the time t3 _, and has the elemental wave power P2 during the duration | _{t4 - t3} | from the _time t3. Hereinafter, similarly, the elementary wave _{wv_n} is generated at the frequency fn when the use of the radio wave is started at the time t _n1 , and the elementary wave power is generated from the time t _n1 to the duration | t _n2 -t _n1 |. It has P _n .

FIG. 4 is a conceptual diagram showing the distribution of frequencies f _n . When the frequency f _n is generated according to the equation (1) with reference to FIG. 4, in the frequency band having the frequency bandwidth bw, the frequencies f ₁ to f _n having the bandwidth corresponding to the frequency resolution Δ bw exist.

The frequencies f ₁ to f _n are distributed according to the Poisson process. When the bandwidth of the frequency f _n is smaller than the frequency resolution Δbw, the elementary wave having the frequency f _n is not generated. This is because it cannot be frequency-distinguished from an elementary wave having an adjacent frequency f _n-1 .

On the other hand, when the bandwidth of the frequency f _n is equal to or more than the frequency resolution Δbw and smaller than 2Δbw, the elementary wave having the frequency f _n is generated.

As described above, the embodiment of the present invention is characterized in that the frequency f _n of the generated elementary wave wv_n is distributed according to the Poisson process.

FIG. 5 is a flowchart for explaining the operation of the elemental wave generator 10 shown in FIG. With reference to FIG. 5, when a series of operations are started, the elemental wave generating means 4 divides the frequency bandwidth bw by the frequency resolution Δbw to determine the average elemental wave number m to be generated (step S11). In addition, m consists of the value obtained by converting the division result = bw / Δbw into an integer.

Then, the frequency generating means 1 generates a frequency f _n with a frequency resolution Δbw according to the Poisson process (that is, according to the equation (1)) (step S12), and outputs the generated frequency f _n to the elementary wave generating means 4. ..

After that, the duration generating means 2 generates the duration Tn according to the exponential distribution (that is, according to the equation (2)) (step S13), and outputs the generated _{duration Tn} to the element wave generating means 4.

Subsequently, the power generating means 3 selects an arbitrary power value from the range of power defined by the minimum value and the maximum value to generate the raw wave power _Pn (step S14), and the generated raw wave power. P _n is output to the elementary wave generating means 4.

The elemental wave generating means 4 receives the frequency f _n from the frequency generating means 1, the duration _Tn from the duration generating means 2, and the elementary wave power _Pn from the power generating means 3.

Then, when the use of the radio wave of the frequency _fn is started, the elemental wave generating means 4 is generated at the time when the use of the radio wave is started at the frequency _fn , and from the generation time to the duration _Tn , A raw wave _{wv_n} having a raw wave power Pn is generated (step S15). _In this case, when the use of the radio wave of the frequency f1 is started, the elemental wave generating means ₄ is generated at the time when the use of the radio wave is started at the frequency f1 and is between the generation time and the duration _T1 . , Generates a raw wave _{wv_1} having a raw wave power P1. Further, when the use of the radio wave of the frequency f2 is started, the elemental wave generating means ₄ is generated at the _time when the use of the radio wave is started at the frequency f2, and from the generation _time to the duration T2. A raw wave _{wv_2} having a raw wave power P2 is generated. Hereinafter, similarly, when the use of the radio wave of the frequency f _n is started, the element wave generating means 4 is generated at the time when the use of the radio wave is started at the frequency f _n , and the duration T from the generated time. During _n , a raw wave wv_n having a raw wave power P _n is generated.

Then, the element wave generating means 4 determines whether or not the element wave number of the generated elemental wave wv_n is equal to the average elemental wave number m (step S16).

When it is determined in step S16 that the elementary wave number is not equal to the average elementary wave number m, the series of operations shifts to step S12. After that, in step S16, steps S12 to S16 are repeatedly executed until it is determined that the elementary wave number is equal to the average elementary wave number m.

Then, in step S16, when it is determined that the elementary wave number is equal to the average elementary wave number m, a series of operations is completed.

The frequency generating means 1 executes step S12 by changing the frequency resolution Δbw each time the series of operations shifts from step S16 to step S12.

In this way, the elementary wave generator 10 generates a frequency f _n according to a Poisson process, a duration _Tn according to an exponential distribution, and an arbitrary power value from a range of power defined by a minimum value and a maximum value. Is selected to generate the elementary wave power P _n , and the elementary wave wv_n having the generated frequency f _n , the duration T _n , and the elementary wave power P _n is generated.

Therefore, it is possible to generate elementary waves distributed in the frequency axis direction and the time axis direction.

[Embodiment 2]
FIG. 6 is a schematic view of the elemental wave generator according to the second embodiment. With reference to FIG. 6, the elemental wave generator 10A according to the second embodiment includes a frequency generating means 11 and processing units 121 to 12 m.

The frequency generating means 11 generates the frequency f _n by the same method as the frequency generating means 1 of the elementary wave generating device 10.

Then, the frequency generating means 11 determines whether or not the number of generated frequencies f _n is equal to the average wave number m.

When the frequency generating means 11 determines that the number of generated frequencies f _n is not equal to the average wave number m, the frequency f _n is generated by changing the frequency resolution Δbw according to the equation (1).

The frequency generating means 11 repeatedly executes the operation of generating the frequency f _n according to the equation (1) until it is determined that the number of generated frequencies f _n is equal to the average wave number m.

Then, when the frequency generating means 11 determines that the number of generated frequencies f _n is equal to the average wave number m, the frequency generating means 11 outputs the generated frequencies f ₁ to fm to the processing units 121 to 12 _m , respectively. Since it is determined that the number of generated frequencies f _n is equal to the average wave number _m , it is described as "frequency f ₁ to fm".

The processing units 121 to 12 m are provided corresponding to the average wave number m.

The processing unit ₁₂₁ receives the frequency f1 from the frequency generating means ₁₁ and detects that the elementary wave is generated at the timing of receiving the frequency f1.

Then, the processing unit 121 generates the raw wave power P ₁ by the above-mentioned method, and generates the duration T ₁ by the above-mentioned method.

When the duration T ₁ is generated, the processing unit 121 determines whether or not the generated duration T ₁ has ended.

Then, the processing unit 121 repeatedly executes the operation of generating the duration T ₁ according to the equation (2) until it is determined that the duration T ₁ has ended.

When it is determined that the duration T ₁ has ended, the processing unit 121 generates the elementary wave power P _s1 = 0.

After that, the processing unit 121 generates a duration T _s1 in which no elementary wave is generated according to the equation (2).

When the duration T _s1 is generated, the processing unit 121 determines whether or not the generated duration T _s1 has ended.

Then, the processing unit 121 repeatedly executes the operation of generating the duration T _s 1 according to the equation (2) until it is determined that the duration T _s 1 has ended.

When the processing unit 121 is determined that the duration T _s1 has ended, the raw wave _{wv_1} having the elementary wave power P1 and the duration T1 and the elementary wave power P _s1 = ₀ and the elementary wave power P s1 = ₀ at the frequency f1. Generates non-occurrence of elementary waves with a duration T _s1 .

When the processing units 122 to 12 _m receive frequencies f ₂ to fm from the frequency generating means 11, they operate in the same manner as the processing units 121, respectively, at frequencies f ₂ to _fm , and the raw wave powers P ₂ to P _m . And the elementary waves wv_2 to _{wv_m} having a duration T ₂ to T _m , and the non-generation of the elementary waves having an elementary wave power P _s2 to P _sm = 0 and a duration T _s2 to T s m are generated.

Then, the processing units 121 to 12 m execute the above-mentioned operations in parallel.

Each of the processing units 121 to 12 m includes a power generating means 21, a duration generating means 22, and a raw wave generating means 23.

When the power generating means 21 of the processing unit ₁₂₁ receives the frequency f1 from the frequency generating means 11, it generates the raw wave power P1 by the same method as the power generating means ₃ of the raw wave generator 10, and the generated raw wave. The electric power P ₁ is output to the elementary wave generating means 23.

Further, when the power generating means 21 of the processing unit 121 receives the signal S_Z1 from the elementary wave generating means 23, the elementary wave power P _s1 = 0 is generated, and the generated elementary wave power P _s1 = 0 is used as the elementary wave generating means. Output to 23.

When the duration generation means 22 of the processing unit ₁₂₁ receives the frequency f1 from the frequency generation means 11, the duration T1 is generated according to the equation ( ₂ ).

When the duration T ₁ is generated, the duration generation means 22 determines whether or not the generated duration T ₁ has ended. More specifically, can the duration generating means 22 identify the timing _tend at which the duration _T1 has elapsed from the _start t _start of the elementary wave (timing when the frequency fm is received) as the start _t start of the elementary wave? By determining whether or not, it is determined whether or not the duration T ₁ has ended.

The duration T ₁ generated according to the equation (2) is a function of the time resolution Δt, and the duration T ₁ becomes very short depending on the value of the time resolution Δt. As a result, the timing tend, which is the _end of the elementary wave, may not be distinguishable from the start t _start of the elementary wave.

Therefore, when the duration generation means 22 can identify the timing tend as the start _{t start} of the elementary wave, it determines that the duration T ₁ has ended, and identifies the timing tend as the start _{t start} of the elementary wave. If it cannot be done, it is determined that the duration T ₁ has not ended.

Then, the duration generation means 22 repeatedly executes the operation of generating the duration T ₁ according to the equation (2) until it is determined that the duration T ₁ has ended. _In this case, the duration generation means 22 repeatedly executes the operation of generating the duration T1 by changing the time resolution Δt.

When the duration generation means 22 determines that the duration T ₁ has ended, it outputs the finally generated duration T ₁ to the elementary wave generation means 23.

Further, when the duration generation means 22 receives the signal S_Z2 from the elementary wave generating means 23, the duration T _s1 in which the elemental wave is not generated is continuously generated according to the equation (2).

Then, when the duration T _s1 is generated, the duration generation means 22 determines whether or not the generated duration T _s1 has ended. More specifically, the duration generating means 22 determines whether or not the timing _{tend_NO} at which the duration T _s1 has elapsed from the start t _{start_NO} at which the elementary wave is not generated can be distinguished from the _{start_NO} . Determines whether or not the duration T _s1 has ended.

That is, the duration generation means 22 determines that the duration T _s1 has ended when the timing _{tend_NO} starts and can be identified as t _{start_NO} , and when the timing _{tend_NO cannot be identified as the start t start_NO ,} the duration T It is determined that _s1 has not ended.

Then, the duration generation means 22 repeatedly executes the operation of generating the duration T _s1 according to the equation (2) until it is determined that the duration T _s1 has ended. In this case, the duration generation means 22 repeatedly executes the operation of generating the duration T _s1 by changing the time resolution Δt.

When the duration generation means 22 determines that the duration T _s1 has ended, it outputs the finally generated duration T s 1 to the element _wave generation means 23.

_The raw wave generating means 23 of the processing unit ₁₂₁ receives the raw wave power P1 from the power generating means 21 and the duration T1 from the duration generating means 22. Then, when the elementary wave generating means 23 receives the elementary wave power P1 and the duration T1, it generates _a signal S_Z1 and _a signal S_Z2, outputs the generated signal S_Z1 to the power generating means 21, and continues the signal S_Z2. Output to the time generating means 22.

Further, the elementary wave generating means 23 receives the elementary wave power P _s1 = 0 from the electric power generating means 21, and receives the duration T _s1 from the duration generating means 22.

Then, the elementary wave generating means 23 does not generate the elementary _{wave wv_1 having the elementary wave power P1 and the duration T1 and the elementary wave having the elementary wave power P s1 = 0 and the duration T s1 at the frequency f1} . And generate.

In each of the processing units 122 to 12 m, the power generating means 21, the duration generating means 22, and the element wave generating means 23 are the power generating means 21, the duration generating means 22, and the element wave generating means 23 of the processing unit 121 described above, respectively. Performs the same operation as 23.

FIG. 7 is a flowchart for explaining the operation of the elemental wave generator 10A shown in FIG.

With reference to FIG. 7, when a series of operations are started, the frequency generating means 11 divides the frequency bandwidth bw by the frequency resolution Δbw to determine the average wave number m to be generated (step S21).

Then, the frequency generating means 11 generates the frequency f _n according to the Poisson process (that is, according to the equation (1)) with the frequency resolution Δbw (step S22).

Then, the frequency generating means 11 determines whether or not the number of generated frequencies f _n is equal to the average wave number m (step S23).

When it is determined in step S23 that the number of frequencies f _n is not equal to the average wave number m, a series of operations shifts to step S22. After that, in step S23, steps S22 and S23 are repeatedly executed until it is determined that the number of frequencies f _n is equal to the average wave number m. When shifting from step S23 to step S22, the frequency generating means 11 changes the frequency resolution Δbw to generate the frequency f _n according to the equation (1) (that is, the frequency resolution Δbw is changed to execute step S22). ..

Then, in step S23, when it is determined that the number of frequencies f _n is equal to the average wave number m, the frequency generating means 11 outputs the generated frequencies f ₁ to fm to the processing units 121 to 12 _m , respectively.

The processing units 121 to 12 _m receive frequencies f ₁ to fm, respectively. Then, when the processing units 121 to 12 _m receive frequencies f ₁ to fm, respectively, they continue according to the equation (2) until it is determined that the raw wave power P _m is generated and the duration T _m is completed. Repeated generation of time T _m is executed in parallel for the average number of elementary waves (step S24).

After that, the processing units 121 to 12 m repeatedly execute the generation of the raw wave power P _m = 0 and the generation of the duration T _s until it is determined that the duration T _s has ended, that is, the average number of raw waves. It is executed in parallel by the number of minutes (step S25).

Then, the processing units 121 to 12 _{m execute the generation of the elementary wave wv_m having the durations T m ,} T _s and the elementary wave power P _m in parallel by the average elementary wave number at the frequency fm (step S26). This ends the series of operations.

It should be noted that steps S24 to S26 are repeatedly executed a number of times determined according to the time required for the simulation.

FIG. 8 is a flowchart for explaining the detailed operation of step S24 shown in FIG. 7.

With reference to FIG. 8, when it is determined in step S23 of FIG. 7 that the number of frequencies f _n is equal to the average wave number m, the processing units 121 to 12 m execute steps S241 to S24 m in parallel, respectively. ..

Each of steps S241 to 24m comprises steps S31 to S33.

The power generation means 21 of the processing unit 121 generates the elementary wave power P ₁ (step S31), and outputs the generated elementary wave power P ₁ to the elementary wave generation means 23.

Further, the duration generation means 22 generates the duration T1 according to the exponential distribution (that is, according to the equation ( ₂ )) (step S32).

Then, the duration generation means 22 determines whether or not the duration T ₁ has ended by the method described above (step S33).

When it is determined in step S33 that the duration _T1 has not ended, the series of operations returns to step S32. After that, in step S33, steps S32 and S33 are repeatedly executed until it is determined that the duration _T1 has ended. When the step S32 is executed after the step S33, the duration generation means 22 changes the time resolution Δt and executes the step S32.

Then, when it is determined in step S33 that the duration T ₁ has ended, the duration generating means 22 outputs the finally generated duration T ₁ to the element wave generating means 23. After that, the series of operations proceeds to step S25 of FIG. 7 (step S251 of FIG. 9).

_The power generation means 21 and the duration generation means 22 of the processing unit 122 sequentially execute steps S31 to S33 at the frequency f2 in the same manner as the power generation means 21 and the duration generation means 22 of the processing unit 121. Then, when it is determined that the duration T ₂ has ended, the series of operations proceeds to step S25 of FIG. 7 (step S252 of FIG. 9).

Hereinafter, similarly, the power generation means 21 and the duration generation means 22 of the processing unit 12 _m have the same steps S31 to S33 as the power generation means 21 and the duration generation means 22 of the processing unit 121 at the frequency fm. Are executed sequentially. Then, when it is determined that the duration _Tm has ended, the series of operations proceeds to step S25 in FIG. 7 (step S25 m in FIG. 9).

In this way, steps S241 to S24m are executed in parallel.

FIG. 9 is a flowchart for explaining the detailed operation of step S25 shown in FIG. 7.

With reference to FIG. 9, the processing units 121 to 12m execute steps S251 to S25m in parallel after step S24 in FIG. 7, respectively.

Each of steps S251 to S25m comprises steps S41 to S43.

When the power generating means 21 of the processing unit 121 receives the signal S_Z1 from the elementary wave generating means 23, it generates an elementary wave power P ₁ = 0 (step S41), and the generated elementary wave power P ₁ = 0 is an elementary wave. It is output to the generation means 23.

Further, the duration generation means 22 generates the duration T _s1 according to the exponential distribution (that is, according to the equation (2)) (step S42).

Then, the duration generation means 22 determines whether or not the duration T _s1 has ended by the method described above (step S43).

When it is determined in step S43 that the duration T _s1 has not ended, the series of operations returns to step S42. After that, in step S43, steps S42 and S43 are repeatedly executed until it is determined that the duration T _s1 has ended. When the step S42 is executed after the step S43, the duration generation means 22 changes the time resolution Δt and executes the step S42.

Then, when it is determined in step S43 that the duration T _s1 has ended, the duration generating means 22 outputs the finally generated duration T s 1 to the element _wave generating means 23. After that, the series of operations proceeds to step S26 of FIG. 7 (step S261 of FIG. 10).

_The power generation means 21 and the duration generation means 22 of the processing unit 122 sequentially execute steps S41 to S43 at the frequency f2 in the same manner as the power generation means 21 and the duration generation means 22 of the processing unit 121. Then, when it is determined that the duration T _s2 has ended, the series of operations proceeds to step S26 of FIG. 7 (step S262 of FIG. 10).

Hereinafter, similarly, the power generation means 21 and the duration generation means 22 of the processing unit 12 _m have the same steps S41 to S43 as the power generation means 21 and the duration generation means 22 of the processing unit 121 at the frequency fm. Are executed sequentially. Then, when it is determined that the duration T _sm has ended, the series of operations proceeds to step S26 in FIG. 7 (step S26 m in FIG. 10).

As described above, each of steps S251 to S25m is a step of creating a period in which no radio wave is generated. Then, steps S251 to S25m are executed in parallel.

FIG. 10 is a flowchart for explaining the detailed operation of step S26 shown in FIG. 7.

With reference to FIG. 10, the processing units 121 to 12m execute steps S261 to S26m in parallel after step S25 in FIG. 7, respectively.

Each of steps S261 to S26m comprises step S51.

The raw wave generating means 23 of the processing unit 121 generates a raw wave _{wv_1} having a duration T ₁ , a duration T s 1 and a raw wave power P ₁ at a frequency f _1. (Step S51).

After that, the series of operations ends.

_The raw wave generating means 23 of the processing unit 122 executes step S51 at the frequency f2 in the same manner as the raw wave generating means 23 of the processing unit 121. After that, the series of operations ends.

Hereinafter, in the same manner, the elemental wave generating means 23 of the processing unit 12m executes step S51 in the same manner as the elemental wave generating means 23 of the processing unit 121 at the frequency _fm . After that, the series of operations ends.

According to the flowchart shown in FIG. 7 described above (including the flowcharts shown in FIGS. 8 to 10), the elemental wave generator 10A has a duration T _m in which the elemental wave is generated and no elemental wave is generated. Along with generating the duration T _s , the raw waves wv_1 to wv_m are generated after confirming that the duration T _m and the duration T _s have ended.

Therefore, the elemental wave can be generated more accurately than the elemental wave generator 10.

[Embodiment 3]
FIG. 11 is a schematic view of the elemental wave generator according to the third embodiment. With reference to FIG. 11, the elemental wave generator 10B according to the third embodiment has the frequency generating means 1, the duration generating means 2 and the elemental wave generating means 4 of the elemental wave generating apparatus 10 shown in FIG. 1, respectively. Instead of 1A, the duration generating means 2A and the element wave generating means 4A, the antenna 5, the receiving means 6, the selecting means 7, the creating means 8 and the detecting means 9 are added, and the others are the element wave generating device 10. It is the same.

The receiving means 6 holds in advance the frequency band BW used in the frequency sharing system. The receiving means 6 receives the frequency f _U (center frequency) and the bandwidth ΔBW from the selecting means 7. Then, the receiving means 6 receives the radio wave wv_U having the center frequency _fU and the bandwidth ΔBW via the antenna 5, and detects the received power RSSI_U when the radio wave wv_U is received. Further, the receiving means 6 receives the radio wave _{wv_EX} having a center frequency other than the frequency f _U and a bandwidth of ΔBW via the antenna 5, and the received power RSSI_EX when the radio wave wv_EX is received. Is detected. Then, the receiving means 6 outputs the detected received power RSSI_U and RSSI_EX to the creating means 8.

The selection means 7 holds the frequency band BW in advance, selects the frequency f _U from the frequency band BW, and outputs the selected frequency f _U and the bandwidth ΔBW to the receiving means 6.

The creating means 8 receives received power RSSI_U and RSSI_EX from the receiving means 6. Then, the creating means 8 compares the received power RSSI_U and RSSI_EX with the threshold value RSSI_th (for example, −95 [dBm]), sets the received power RSSI_U and RSSI_EX equal to or higher than the threshold value RSSI_th to “1”, and sets the threshold value. A wideband spectrum is created with the received powers RSSI_U and RSSI_EX smaller than RSSI_th as "0". Then, the creating means 8 outputs the created wideband spectrum to the detecting means 9.

The detection means 9 receives a wide band spectrum from the creating means 8, and based on the received wide band spectrum, the measured value t ₀ of the average existence time t of the elementary wave, the measured value m ₀ of the average elementary wave number m, and the continuation of the elementary wave. The measured value _{Tn_actual} of time is detected. Then, the detecting means 9 outputs the actually measured value t ₀ of the average existence time t of the detected elementary wave and the actually measured value _{Tn_actual} of the duration of the elementary wave to the duration generating means 2B, and the detected average elementary wave number m. The measured value m ₀ of is output to the frequency generating means 1A.

The duration generation means 2B receives the actually measured value t ₀ of the average existence time t of the elementary wave and the actually measured value _{Tn_actual} of the duration of the elementary wave from the detecting means 9. Then, the duration generation means 2B obtains the average existence time t of the elementary wave by the following equation.

In equation (3), α is a correction coefficient.

The duration generation means 2B sets the correction coefficient α to the initial value α ₀ , calculates the average existence time t (= α ₀ t ₀ ) of the elementary wave, and calculates the average existence time t (= α) of the elementary wave. ₀ t ₀ ) is used to generate a duration _Tn according to equation (2). Then, the duration generation means 2B outputs the generated duration _Tn to the elementary wave generation means 4A.

When the duration generating means 2B receives the signal SGE indicating that the raw wave _{wv_n} is generated from the raw wave generating means 4A, the duration Tn_cal generated according to the equation (2) and the measured value T _{n_actual} of the _duration Calculate the error ΔT _n . Then, the duration generation means 2B determines whether or not the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} . The threshold value ΔT _{n_th} depends on the resolution of the measured data and is, for example, about 0.01. When the duration generation means 2B determines that the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} , the duration generation means 2B generates a signal S _YES _T _n indicating that the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} . Output to the generating means 4A. On the other hand, when the duration generation means 2B determines that the error ΔT _n is not equal to or less than the threshold value ΔT _{n_th} , the duration generation means 2B generates a signal S _{NO_T n} indicating that the error ΔT _n is not equal to or less than the threshold value ΔT _{n_th} . Output to the generating means 4A.

Further, when the duration generating means 2B receives the signal S _α for setting the correction coefficient α to a value other than the initial value α ₀ from the elementary wave generating means 4A, the duration generating means 2B sets the correction coefficient α to a value other than the initial value α ₀ . It is set to _NEW , and the average existence time t (= α _NEW t ₀ ) of the elementary wave is obtained by the equation (3) using the set value α _NEW , and the average existence time t (= α _NEW ) of the obtained elementary wave is obtained. Using t ₀ ), the duration _Tn is generated according to equation (2). Then, the duration generation means 2B outputs the generated duration _Tn to the elementary wave generation means 4A.

The frequency generating means 1A receives an actually measured value m ₀ of an average wave number m from the detecting means 9. Then, the frequency generating means 1A obtains the average wave number m by the following equation.

In equation (4), β is a correction coefficient.

The frequency generating means 1A sets the correction coefficient β to the initial value β ₀ and calculates the average wave number m (= β ₀ m ₀ ). Then, the frequency generating means 1A generates a frequency f _n according to the equation (1) using the average elementary wave number m (= β ₀ m ₀ ), and outputs the generated frequency f _n to the elementary wave generating means 4A.

When the frequency generating means 1A receives the average elementary wave number m_cal from the elementary wave generating means 4A, the frequency generating means 1A calculates an error Δm between the average elementary wave number m_cal and the actually measured value m ₀ of the average elementary wave number m. Then, the frequency generating means 1A determines whether or not the error Δm is equal to or less than the threshold value Δm_th. The threshold value Δm_th depends on the resolution of the measured data and is, for example, about 0.01. When the frequency generating means 1A determines that the error Δm is equal to or less than the threshold value Δm_th, the frequency generating means 1A generates a signal S _YES _Δm indicating that the error Δm is equal to or less than the threshold value Δm_th and outputs the signal S YES _Δm to the raw wave generating means 4A. .. On the other hand, when the frequency generating means 1A determines that the error Δm is not equal to or less than the threshold value Δm_th, the frequency generating means 1A generates a signal _{SNO_Δm} indicating that the error Δm is not equal to or less than the threshold value Δm_th and outputs the signal SNO_Δm to the raw wave generating means 4A. ..

Further, when the frequency generating means 1A receives the signal S _β for setting the correction coefficient β to a value other than the initial value β ₀ from the elementary wave generating means 4A, the frequency generating means 1A receives the correction coefficient β to a value other than the initial value β ₀ β _NEW . The average elementary wave number m (= β _NEW m ₀ ) is obtained by the equation (4) using the set value β _NEW , and the equation is used using the obtained average elementary wave number m (= β _NEW m ₀ ). The frequency f _n is generated according to (1). Then, the frequency generating means 1A outputs the generated frequency _fn to the elementary wave generating means 4A.

The duration generation means 2B described above is described until the signal _{Sopt_α} for detecting the correction coefficient α _opt when ΔT _n ≤ threshold value ΔT _{n_th} and Δm ≤ threshold value Δm_th is received from the elementary wave generation means 4A. Repeat the operation that was performed. Then, when the duration generating means 2B receives the signal _{Sopt_α} from the elementary wave generating means 4A, the duration generating means 2B detects the correction coefficient α _opt when ΔT _n ≦ the threshold value ΔT _{n_th} , and detects the detected correction coefficient α _opt . Substituting into equation (3), the average existence time t (= α _oppt t ₀ ) of the elementary wave is obtained, and the average existing time t (= α _oppt t ₀ ) of the obtained elementary wave is used according to the equation (2). Calculate the duration _Tn . Then, the duration generation means 2B outputs the duration _Tn to the elementary wave generation means 4A.

Further, the frequency generating means 1A receives a signal _{Sopt_β} for detecting the correction coefficient β _opt when ΔT _n ≤ threshold value ΔT _{n_th} and Δm ≤ threshold value Δm_th from the elementary wave generating means 4A. The above-mentioned operation is repeatedly executed. Then, when the frequency generating means 1A receives the signal _{Sopt_β} from the elementary wave generating means 4A, the frequency generating means 1A detects the correction coefficient β _opt when Δm ≦ the threshold value Δm_th, and the detected correction coefficient β _opt is expressed by the equation (4). ), The average wave number m (= β _opt m ₀ ) is obtained, and the frequency f _n is generated according to the equation (1) using the obtained average wave number m (= β _opt m ₀ ). Then, the frequency generating means 1A outputs the frequency f _n to the elementary wave generating means 4A.

The elemental wave generating means 4A receives a frequency f _n from the frequency generating means 1A, a duration Tn from the duration generating means 2B, and an elementary _wave power _Pn from the power generating means 3. Then, the elemental wave generating means 4A _is generated at the time when the use of the radio wave is started at the frequency fn, and generates the elemental wave _{wv_n} having the elemental wave power _Pn for the duration Tn from the generated time. ..

When the elemental wave wv_n is generated, the elemental wave generation means 4A detects the average elemental wave number m_cal of the generated elemental wave _{wv_n} and generates a signal SGE. Then, the elementary wave generating means 4A outputs the average elementary wave number m_cal to the frequency generating means 1A, and outputs the signal _GE to the duration generating means 2B.

Further, the elementary wave generating means 4A generates signals S _α and S _β in any of the following (i) to (iii), and outputs the generated signals S _α to the duration generating means 2B. The generated signal S _β is output to the frequency generating means 1A.

On the other hand, in the case of the next (iv), the elementary wave generating means 4A generates the signals _{Sopt_α} and _{Sopt_β} , outputs the generated signal _{Sopt_α} to the duration generating means 2B, and outputs the generated signal _{Sopt_β} . Output to the frequency generating means 1A.

(I) When the signal S _NO _Δm is received from the frequency generating means 1A and the signal S _NO _ΔTn is received from the duration generating means 2B (ii) The signal S _YES _Δm is received from the frequency generating means 1A and the duration is received. When the signal S _NO _ΔTn is received from the generating means 2B (iii) When the signal S _NO _Δm is received from the frequency generating means 1A and when the signal S _YES _ΔTn is received from the duration generating means 2B (iv) The frequency generating means 1A When the signal S _{YES _Δm is received from the signal S YES _Δm and the signal S YES _ΔTn is} received from the duration generation means 2B, the element wave generation means 4A generates the duration Tn generated by using the correction coefficient α _opt . When the frequency f _n received from 2B and generated using the correction coefficient β _opt is received from the frequency generating means 1A and the raw wave power P _n is received from the power generating means 3, the received duration T _n and the frequency f _n . And using the elementary wave power P _n , it is generated at the time when the use of the radio wave is started at the frequency f _n , and the elementary wave _{wv_n having the elementary wave power P n is} generated from the generated time to the duration Tn. do.

FIG. 12 is a diagram showing the relationship between the actually measured received power and the frequency. In FIG. 12, the vertical axis represents the received power [dBm], and the horizontal axis represents the frequency [GHz]. Further, the curve k3 shows the maximum power, and the curve k4 shows the average power. Further, the threshold value RSSI_th is −95 [dBm]. The relationship between the received power and the frequency shown in FIG. 12 shows the relationship between the received power and the frequency measured in the urban area of Yokohama. The measurement time is 10 minutes, and the observation band is 2.0 to 6.0 [GHz]. Further, in FIG. 12, the received power also exists in the time direction, which is the direction perpendicular to the paper surface of FIG. With reference to FIG. 12, the maximum power and the average power vary with frequency (see curves k3 and k4) and, although not shown, also with time.

FIG. 13 is a diagram showing an actual measurement example of a wideband spectrum. In FIG. 13, the vertical axis represents time [s] and the horizontal axis represents frequency [GHz]. Further, in FIG. 13, the black portion indicates a radio wave whose received power is equal to or higher than the threshold value RSSI_th, and the white portion indicates a radio wave whose received power is lower than the threshold value RSSI_th. As shown in FIG. 13, in the wideband spectrum, radio waves whose received power is equal to or higher than the threshold value RSSI_th and radio waves whose received power is smaller than the threshold value RSSI_th are distributed in the frequency direction and the time direction. You can see that.

The creating means 8 receives the relationship between the received power and the frequency (and time) shown in FIG. 12 from the receiving means 6. Then, the creating means 8 represents a radio wave whose received power is equal to or higher than the threshold value RSSI_th by "1" based on the relationship between the received power and the frequency (and time), and the received power is smaller than the threshold value RSSI_th. The radio wave is represented by "0" to create a wideband spectrum (see FIG. 13).

FIG. 14 is a flowchart for explaining the operation of the elemental wave generator 10B shown in FIG. With reference to FIG. 14, when a series of operations are started, the creating means 8 of the elementary wave generator 10B creates a wideband spectrum by the method described above (step S31). Then, the creating means 8 outputs the wideband spectrum to the detecting means 9.

The detection means 9 receives a wide band spectrum from the creating means 8, and based on the received wide band spectrum, the measured value t ₀ of the average existence time of the elementary wave, the measured value m ₀ of the average elementary wave number m, and the duration of the elementary wave. The measured value T _{n_actual} of the above is detected (step S32), the measured value t ₀ of the detected average existence time of the elementary wave and the measured value T _{n_actual} of the duration of the elementary wave are output to the duration generation means 2B, and the average element is output. The measured value m ₀ of the wave number m is output to the frequency generating means 1A.

The duration generation means 2B receives the actually measured value t ₀ of the average existence time of the elementary wave and the actually measured value _{Tn_actual} of the duration of the elementary wave from the detecting means 9. The frequency generating means 1A receives an actually measured value m ₀ of an average wave number m from the detecting means 9.

Then, the duration generating means 2B sets the correction coefficient α to the initial value α ₀ , and the frequency generating means 1A sets the correction coefficient β to the initial value β ₀ (step S33).

Subsequently, the duration generating means 2B calculates the average existence time t of the elementary wave by t = αt ₀ (α = α ₀ ), and the frequency generating means 1A averages by m = βm ₀ (β = β ₀ ). The elementary wave number m is calculated (step S34). Then, the duration generation means 2B generates the duration Tn according to the equation (2) using the average existence time t ( ₌ αt ₀ ) of the elementary wave, and the generated duration Tn _is used as the elementary wave generation means 4A. Output to. Further, the frequency generating means 1A generates a frequency f _n according to the equation (1) using the average wave number m (= βm ₀ ), and the generated frequency f _n and the average wave number m (= βm ₀ ) are combined with each other. Is output to the elemental wave generating means 4A. Further, the electric power generating means 3 generates an elementary wave power P _n , and outputs the generated elementary wave electric power P _n to the elementary wave generating means 4A.

The elemental wave generating means 4A receives a frequency f _n and an average elemental wave number m (= βm ₀ ) from the frequency generating means 1A, receives a duration Tn from the duration generating means 2B, and receives an elementary wave power _{P n from} the electric power generating means. Receive from 3. Then, the elementary wave generating means 4A generates the elementary wave wv_n by the above-mentioned method based on the frequency f _n , the duration T _n , and the elementary wave power P _n . That is, the elementary wave generating means 4A uses the average existing time t (= αt ₀ ) of the elementary wave and the average elementary wave number m (= βm ₀ ) by the above-mentioned method (steps S12 to S16 shown in FIG. 5). , A bare wave wv_n is generated (step S35). In this case, the element wave generating means 4A executes step S16 shown in FIG. 5 using the average element wave number m (= βm ₀ ).

After that, the elemental wave generating means 4A detects the average elemental wave number m_cal of the generated elemental wave wv_n (step S36). Then, the elementary wave generating means 4A outputs the average elementary wave number _{m_cal} to the frequency generating means 1A, generates a signal SGE, and outputs the signal SGE to the duration generating means 2B.

The frequency generating means 1A calculates an error Δm (= m ₀ −m_cal) between the average elementary wave number m_cal and the measured value m ₀ of the average elementary wave number according to the average elementary wave number m_cal from the elementary wave generating means 4A, and continues. The time generating means 2B has an error between the duration T _{n_cal} calculated according to the equation (2) in the process of generating the raw wave _{wv_n} in response to the signal SGE from the raw wave generating means 4A and the measured value T _{n_actual} of the duration. Calculate ΔT _n (= T _{n_actual} −T _{n_cal} ) (step S37).

After that, the frequency generating means 1A determines whether or not the error Δm (= m ₀ −m_cal) is equal to or less than the threshold value Δm_th. Then, the frequency generating means 1A generates a signal S _YES _Δm or a signal S _NO _Δm according to the determination result and outputs the signal S YES _Δm to the elementary wave generating means 4A.

Further, the duration generation means 2B determines whether or not the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} . Then, the duration generation means 2B generates a signal S _YES _ΔT _n or a signal S _NO _ΔT _n and outputs the signal S YES _ΔT n to the elementary wave generation means 4A according to the determination result.

The element wave generating means 4A determines whether or not the signal S _YES _Δm is received from the frequency generating means 1A and the signal S _YES _ΔT _n is received from the duration generating means 2B, so that the error ΔT _n is a threshold value. It is determined whether or not ΔT _{n_th} or less and the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} (step S38).

When it is determined in step S38 that at least one of the error ΔT _n being equal to or less than the threshold value ΔT _{n_th} and the error Δm being equal to or less than the threshold value Δm_th is not satisfied ((i) to (iiii) described above). ), The elementary wave generating means 4A generates a signal S α for setting the correction coefficient α to a value other than the initial value α ₀ , outputs the signal S _α to the duration generating means 2B, and corrects the correction coefficient β. Is generated as a signal S _β for setting to a value other than the initial value β ₀ , and is output to the frequency generating means 1A. The duration generating means 2B sets the correction coefficient α to a value α _NEW other than the initial value α ₀ according to the signal S _α , and the frequency generating means 1A sets the correction coefficient β to the initial value β ₀ according to the signal S _β . A value other than β _NEW is set (step S39). After that, the series of operations returns to step S34, and in step S38, it is determined that the error ΔT _n is the threshold value ΔT _{n_th} or less and the error Δm is the threshold value Δm_th or less (above (iv). ), Steps S34 to S39 are repeatedly executed.

Then, in step S38, when it is determined that the error ΔT _n is equal to or less than the threshold value ΔT _{n_th} and the error Δm is equal to or less than the threshold value Δm_th, the element wave generating means 4A determines that the error ΔT n is ΔT _n ≦ threshold value. A signal _{Sopt_α} for detecting the correction coefficient α _opt when ΔT _{n_th} and Δm ≤ threshold value Δm_th is generated and output to the duration generation means 2B, and ΔT _n ≤ threshold value ΔT _{n_th} and , Δm ≤ threshold value Δm_th, a signal _{Sopt_β} for detecting the correction coefficient β _opt is generated and output to the frequency generating means 1A. The duration generating means 2B detects the correction coefficient α _opt according to the signal _{Sopt_α} , and the frequency generating means 1A detects the correction coefficient β _opt according to the signal _{Sopt_β} (step S40). Then, the duration generation means 2B obtains the average existence time t (= α opt t ₀ ) of the elementary wave using the correction coefficient α _opt , and the average existence time t (= α _opt t ₀ ) of the obtained elementary _wave . The duration _Tn (α _opt ) is generated according to the equation (2) and output to the element wave generating means 4A. Further, the frequency generating means 1A obtains an average wave number m (= β _opt m ₀ ) using the correction coefficient β _opt , and uses the obtained average wave number m (= β _opt m ₀ ) in the equation (1). The frequency f _n (β _opt ) is generated according to the above. Then, the frequency generating means 1A outputs the average elementary wave number m (= β _opt m ₀ ) and the frequency f _n (β _opt ) to the elementary wave generating means 4A.

Then, the elementary wave generating means 4A generates the elementary wave wv_n by the above-mentioned method based on the duration Tn ₍ α _opt ), the frequency f _n (β _opt ), and the elementary wave power P _n . That is, the elemental wave generating means 4A uses the above-mentioned method (steps S12 to FIG. 5) using the average existing time t (= α _opt t ₀ ) of the elemental wave and the average elemental wave number m (= β _opt m ₀ ). The elementary wave wv_n is generated by step S16) (step S41). In this case, the elemental wave generating means 4A executes step S16 shown in FIG. 5 using the average elemental wave number m (= β _oppt m ₀ ). As a result, the operation of the elementary wave generator 10B is completed.

As described above, in the element wave generator 10B, the correction coefficient α, so that the duration T _{n_cal} of the element wave wv_n approaches the measured value T _{n_actual} and the average element wave number m_cal of the element wave wv_n approaches the actually measured value m ₀ . β is determined, and the elementary wave wv_n is generated based on the average existence time t and the average elementary wave number m calculated using the determined correction coefficients α and β. Therefore, it is possible to generate an elementary wave having a small error from the actually measured radio wave.

Then, generating the elementary wave wv_n according to the flowchart shown in FIG. 14 is close to the duration of the radio wave corrected so as to be close to the duration of the actually measured radio wave and the average number of elementary waves per unit time actually measured. It corresponds to generating the elemental wave wv_n by using the average elemental wave number per unit time corrected so as to be.

The reasons why the correction coefficients α and β are required are as follows. Since the probability function (statistical value assuming the number of radio samples) is obtained from the measured data of radio waves (finite number of samples), the samples are biased. Therefore, correction coefficients α and β are required to correct this bias.

FIG. 15 is a diagram showing a comparison between the measured values and the calculated values of the duration Tn, the average wave number _m , and the spatial density of the raw waves. In FIG. 15, the spatial density N of the elementary wave is the product of the radio wave observation time (for example, 10 minutes) and the observation bandwidth (for example, 400 MHz). More specifically, for example, the minimum unit of observation time is 1 second, the minimum unit of observation bandwidth is 1 Hz, and these are the particle sizes. In addition, the usage status of radio waves is decomposed into particles, and the status of being used is set as "1" and the status of not being used is set as "0". The product of the grain size of the observation time and the grain size of the observation bandwidth is set as the denominator, the total number that becomes "1" in the radio wave usage situation is set as the numerator, and the ratio is defined as the spatial density N.

With reference to FIG. 15, when both the correction coefficients α and β are set to “1”, the calculated values of the duration T _n , the average wave number m, and the spatial density N of the raw waves have an error from the measured values. big. On the other hand, when the correction coefficient α is set to “0.37” and the correction coefficient β is set to “1.37”, the calculated values of the duration T _n , the average wave number m, and the spatial density N of the raw waves are as follows. The error from the measured value is small.

Therefore, by correcting the average existence time t and the average elementary wave number _m of the elementary wave using the correction coefficients α and β, the duration Tn, the average elementary wave number m, and the spatial density N of the elementary wave are close to the measured values. We were able to demonstrate that a bare wave can be obtained.

[Embodiment 4]
FIG. 16 is a schematic view of the elemental wave generator according to the fourth embodiment. With reference to FIG. 16, the elemental wave generator 10C according to the fourth embodiment processes the antenna 5, the receiving means 6, the selecting means 7, the creating means 8, the detecting means 9, the frequency generating means 11A, and the like. It is equipped with units 131 to 13 m.

The operations of the receiving means 6, the selecting means 7, the creating means 8 and the detecting means 9 are as described above. In this case, the detecting means 9 outputs the actually measured value t ₀ of the detected average existence time of the elementary wave and the actually measured value _{Tn_actual} of the duration of the elementary wave to the duration generating means 22A of the processing unit 131 to 13 m, and averages them. The measured value m ₀ of the elementary wave number m is output to the frequency generating means 11A.

The frequency generating means 11A receives an actually measured value m ₀ of the average wave number m from the detecting means 9. Then, the frequency generating means 11A generates the frequency f _n by the same method as the frequency generating means 1A of the elementary wave generating device 10B, and determines whether or not the number of generated frequencies f _n is equal to the average elementary wave number m. .. In this case, the average wave number m is set to m = βm ₀ .

When the frequency generation means 11A determines that the number of generated frequencies f _n is not equal to the average wave number m, the frequency resolution Δbw is changed to generate the frequency f _n according to the equation (1).

The frequency generating means 11A repeatedly executes the operation of generating the frequency f _n according to the equation (1) until it is determined that the number of generated frequencies f _n is equal to the average wave number m.

Then, when the frequency generating means 11A determines that the number of generated frequencies f _n is equal to the average wave number m, the frequency generating means 11A outputs the finally generated frequencies f ₁ to fm to the processing units 131 to 13 _m , respectively.

When the frequency generating means 11A receives the signals S _GE _1 to S _GE _m from the elementary wave generating means 23A of the processing units 131 to 13 m, respectively, the frequency generating means 11A detects the number of the signals S _GE _1 to S _GE _m as the average raw wave number m_cal. The signals _GE _1 to S _GE _m are signals indicating that the raw waves wv_1 to wv_m are generated by the raw wave generating means 23A of the processing units 131 to 13 m, respectively.

When the frequency generating means 11A detects the average wave number m_cal, it calculates the above-mentioned error Δm (= m ₀ −m_cal), and whether the calculated error Δm (= m ₀ −m_cal) is equal to or less than the threshold value m_th. Judge whether or not. When the frequency generating means 11A determines that the error Δm (= m ₀ −m_cal) is equal to or less than the threshold value m_th, the signal S indicating that the error Δm (= m ₀ −m_cal) is equal to or less than the threshold value m_th. _YES _Δm_1 to S _YES _Δm_m are generated, and the generated signals S _YES _Δm_1 to S _YES _Δm_m are output to the element wave generating means 23A of the processing units 131 to 13 m, respectively.

On the other hand, when the frequency generating means 11A determines that the error Δm (= m ₀ −m_cal) is not equal to or less than the threshold value m_th, the signal S indicating that the error Δm (= m ₀ −m_cal) is not equal to or less than the threshold value m_th. _{NO _Δm_1} to _{SNO_Δm_m} are generated, and the generated signals _{SNO_Δm_1} to SNO_Δm_m are output to the element wave generating means 23A of the processing units 131 to 13m, respectively.

After that, when the frequency generating means 11A receives the signals S _β _1 to S _β _m for setting the correction coefficient β to a value other than the initial value β ₀ from the elementary wave generating means 23A of the processing units 131 to 13 m, respectively, the frequency generating means 11A corrects. The coefficient β is set to a value β _NEW other than the initial value β ₀ , and the average elementary wave number m (= β _NEW m ₀ ) is obtained by the equation (4) using the set value β _NEW , and the obtained average elementary wave number is obtained. Using m (= β _NEW m ₀ ), the frequency f _n is generated according to the equation (1). Then, the frequency generating means 11A repeatedly executes the operation of generating the frequency f _n according to the equation (1) until it is determined that the number of the generated frequencies f _n is equal to the average wave number m (= β _NEW m ₀ ). do.

When the frequency generating means 11A determines that the number of frequencies f _n is equal to the average wave number m (= β _NEW m ₀ ), the finally generated frequencies f ₁ to fm are transferred to the processing units 131 to 13 _m , respectively. Output.

After that, the frequency generating means 11A processes the signals _{Sopt_β_1} to _{Sopt_β_m} for detecting the correction coefficient β _opt when ΔT _n ≤ threshold value ΔT _{n_th} and Δm ≤ threshold value Δm_th, respectively, from the processing unit 131 to The above-mentioned operation is repeatedly executed until it is received from the 13 m elemental wave generating means 23A. Then, when the frequency generating means 11A receives the signals _{Sopt_β_1} to _{Sopt_β_m} from the raw wave generating means 23A of the processing units 131 to 13m, respectively, the frequency generating means 11A detects the correction coefficient β opt when Δm ≦ the threshold value Δm_th, and the frequency generating means 11A detects the correction coefficient β _opt when Δm ≦ the threshold value Δm_th. Substituting the detected correction coefficient β _opt into the equation (4), the average wave number m (= β _opt m ₀ ) is obtained, and the obtained average wave number m (= β _opt m ₀ ) is used in the equation (1). The frequency f _n is generated according to the above. Then, the frequency generating means 11A generates the elementary waves of the processing units 131 to 13 _m , respectively, when the number of frequencies f _n is determined to be equal to the _average elementary wave number m (= β _NEW m ₀ ). Output to means 23A.

The processing units 131 to 13 m are provided corresponding to the average wave number m. _The processing unit ₁₃₁ receives the frequency f1 from the frequency generating means 11A, and detects that the elementary wave is generated at the timing when the frequency f1 is received. Then, the processing unit ₁₃₁ generates the elementary wave power P1 by the method described above, and generates the duration _T1 by the same method as the duration generation means 2B of the elementary wave generator 10B.

When the duration T ₁ is generated, the processing unit 131 determines whether or not the generated duration T ₁ has ended by the method described above. Then, the processing unit 131 repeatedly executes the operation of generating the duration T ₁ according to the equation (2) until it is determined that the duration T ₁ has ended. In this case, the processing unit ₁₃₁ repeatedly executes the operation of generating the duration T1 according to the equation (2) by changing the time resolution Δt.

When it is determined that the duration T ₁ has ended, the processing unit 131 generates the elementary wave power P _s1 = 0. After that, the processing unit 131 generates a duration T _s1 in which no elementary wave is generated according to the equation (2).

When the duration T _s1 is generated, the processing unit 131 determines whether or not the generated duration T _s1 has ended. Then, the processing unit 131 repeatedly executes the operation of generating the duration T _s 1 according to the equation (2) until it is determined that the duration T _s 1 has ended. In this case, the processing unit 131 repeatedly executes the operation of generating the duration T _s1 according to the equation (2) by changing the time resolution Δt.

When the processing unit 131 is determined that the duration T _s1 has ended, the raw wave _{wv_1} having the elementary wave power P1 and the duration T1 and the elementary wave power P _s1 = ₀ and the elementary wave power P s1 = ₀ at the frequency f1. Generates non-occurrence of elementary waves with a duration T _s1 .

When the processing units 132 to 13 _m receive frequencies f ₂ to fm from the frequency generating means 11A, the processing units 132 to 13 _m operate in the same manner as the processing units 131, respectively, at frequencies f ₂ to fm, and the raw wave powers P ₂ to P _m . And the elementary waves wv_2 to _{wv_m} having a duration T ₂ to T _m , and the non-generation of the elementary waves having an elementary wave power P _s2 to P _sm = 0 and a duration T _s2 to T s m are generated. Then, the processing units 131 to 13m execute the above-mentioned operations in parallel.

Each of the processing units 131 to 13 m includes a power generating means 21, a duration generating means 22A, and a raw wave generating means 23A.

When the power generating means 21 of the processing unit 13 _m receives the frequency fm from the frequency generating means 11A, the power generating means 21 generates the raw wave power P _m by the same method as the power generating means 3 of the raw wave generating device 10, and the generated raw wave The electric power P _m is output to the elementary wave generating means 23A.

Further, when the power generating means 21 receives the signal S_Z1 from the elementary wave generating means 23A, the electric power generating means 21 generates the elementary wave power P _sm = 0 and outputs the generated elementary wave power P _sm = 0 to the elementary wave generating means 23A. ..

The duration generation means 22A of the processing unit 13m receives the frequency fm from the frequency generation means 11A, and receives the measured value t ₀ of the average existence time of the elementary wave and the actual measurement value _{Tn_actual} of the duration of the elementary _wave from the detection means 9. .. Then, the duration generation means 22A sets the correction coefficient α to the initial value α ₀ , calculates the average existence time t (= α ₀ t ₀ ) of the elementary wave according to the equation (3), and calculates the calculated elementary wave. Using the average existence time t (= α ₀ t ₀ ), the duration T _m is generated according to the equation (2).

When the duration T _m is generated, the duration generation means 22A determines whether or not the generated duration T _m has ended by the method described above. Then, the duration generation means 22A repeatedly executes the operation of generating the duration T _m according to the equation (2) until it is determined that the duration T _m has ended. In this case, the duration generation means 22A repeatedly executes the operation of generating the duration _Tm by changing the time resolution Δt.

When the duration generation means 22A determines that the duration T _m has ended, it outputs the finally generated duration T _m to the elementary wave generation means 23A.

Further, when the duration generation means 22A receives the signal S_Z2 from the element wave generation means 23A, the duration T _sm in which the element wave is not generated is generated according to the equation (2).

Then, when the duration T _sm is generated, the duration generation means 22A determines whether or not the generated duration T _sm has ended by the method described above. After that, the duration generation means 22A repeatedly executes the operation of generating the duration T _sm according to the equation (2) until it is determined that the duration T _sm has ended. In this case, the duration generation means 22A repeatedly executes the operation of generating the duration T _sm by changing the time resolution Δt.

When the duration generation means 22A determines that the duration T _sm has ended, it outputs the finally generated duration T _sm to the elementary wave generation means 23A.

After that, when the duration generating means 22A receives the signal _{SGE_m} indicating that the raw wave wv_m is generated from the raw wave generating means 23A, the duration T _m generated according to the equation (2) and the measured value T of the duration are T. The error ΔT _m with _{n_actual} is calculated, and it is determined whether or not the calculated error ΔT _m is equal to or less than the threshold value ΔT _m _th.

When the duration generation means 22A determines that the error ΔT _m is equal to or less than the threshold value ΔT _m _th, the duration generation means 22A generates a signal S _YES _ΔTm_m indicating that the error ΔT _m is equal to or less than the threshold value ΔT _m _th. It is output to the wave generating means 23A. On the other hand, when the duration generation means 22A determines that the error ΔT _m is not equal to or less than the threshold value ΔT _m _th, the duration generation means 22A generates a signal S _NO _ΔTm_m indicating that the error ΔT _m is not equal to or less than the threshold value ΔT _m _th. It is output to the wave generating means 23A.

Then, when the duration generation means 22A receives the signal S _α _m for setting the correction coefficient α to a value other than the initial value α ₀ from the elementary wave generation means 23A, the correction coefficient α is set to a value other than the initial value α ₀ . It is set to α _NEW , and the average existence time t (= α _NEW t ₀ ) of the elementary wave is obtained by the equation (3) using the set value α _NEW , and the average existence time t (= α) of the obtained elementary wave is obtained. _NEW t ₀ ) is used to generate a duration T _m according to equation (2). Then, the duration generation means 22A outputs the generated duration _Tm to the element wave generation means 23A.

The duration generating means 22A receives a signal _{Sopt_α_m} from the raw wave generating means 23A for detecting the correction coefficient α _opt _m when ΔT _m ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th. The above-mentioned operations are repeatedly executed until. Then, when the duration generating means 22A receives the signal _{Sopt_α_m} from the elementary wave generating means 23A, the duration generating means 22A detects the correction coefficient α _{opt_m} when ΔT _m ≤ the threshold value ΔT _{m_th} , and the detected correction coefficient α Substituting _{opt_m} into equation (3), the average existence time t (= α _oppt t ₀ ) of the elementary wave is obtained, and the obtained average existence time t (= α _opt t ₀ ) of the elementary wave is used to obtain the equation (= α opt t 0). Calculate the duration _Tm according to 2). Then, the duration generation means 2B outputs the duration _Tm to the element wave generation means 23A.

The raw wave generating means 23A of the processing unit _{13m receives the frequency fm from the frequency generating means 11A, the raw wave power Pm from the power generating means 21, and the duration T m from the} duration generating means 22A. Then, when the elementary wave generating means 23A receives the elementary wave power P _m and the duration T _m , it generates the signal S_Z1 and the signal S_Z2, outputs the generated signal S_Z1 to the power generating means 21, and continues the signal S_Z2. Output to the time generating means 22A.

Further, the elementary wave generating means 23A receives the elementary wave power P _sm = 0 from the electric power generating means 21, and receives the duration T _sm from the duration generating means 22A.

Then, the elementary wave generating means 23A does not generate an elementary wave _{wv_m having an elementary wave power P m and a duration T m and an} elementary wave having an elementary wave power P _sm = 0 and a duration T _sm at a frequency fm. And generate.

After that, the elementary wave generating means _23A receives the signal S _{YES _Δm_m} or the signal _{SNO_Δm_m} from the frequency generating means 11A, and receives the signal _{SYES_ΔTm_m} or the signal _{SNO_ΔTm_m} from the duration generating means 22A. Then, the elementary wave generating means 23A generates the signals S _α _m and S _β _m in any of the following (v) to (vii), and transfers the generated signals S _α _m to the duration generating means 22A. It is output, and the generated signal S _β _m is output to the frequency generating means 11A.

On the other hand, in the case of the next (viii), the elemental wave generating means 23A generates signals _{Sopt_α_m} and _{Sopt_β_m} , outputs the generated signals _{Sopt_α_m} to the duration generating means 22A, and outputs the generated signals. _{Output _β_m} to the frequency generating means 11A.

(V) When the signal S _NO _Δm_m is received from the frequency generating means 11A and the signal S _NO _ΔT _m _m is received from the duration generating means 22A. (Vi) The signal S _YES _Δm_m is received from the frequency generating means 11A and When the signal S _NO _ΔT _m _m is received from the duration generating means 22A (vii) When the signal S _NO _Δm _m is received from the frequency generating means 11A and the signal S _YES _ΔT _m _m is received from the duration generating means 22A (vii). viii) When the signal S _YES _Δm_m is received from the frequency generating means 11A and the signal S _{YES _ΔTm_m} is received from the duration generating means 22A, the elementary wave generating means 23A is generated using the correction coefficient α _opt _m. When the duration T _m is received from the duration generating means 22A, the frequency fm generated using the correction coefficient β _{opt_m} is received from the frequency generating means 11A, and the raw wave power P _m is received from the power generating means 21, the frequency _fm is received. Using the received duration T _m , frequency fm and elementary wave power P _m , it is generated _{at the time when the use of radio waves is started at the frequency fm, and the elementary wave is generated for the duration T m from the} generated time. A raw wave wv_m having a power P _m is generated.

In each of the processing units 131 to 13m-1, the power generating means 21, the duration generating means 22A and the element wave generating means 23A are the power generating means 21, the duration generating means 22A and the element wave of the processing unit 13m described above, respectively. Performs the same operation as the generating means 23A.

FIG. 17 is a flowchart for explaining the operation of the elemental wave generator 10C shown in FIG. In the flowchart shown in FIG. 14, step S35 of the flowchart shown in FIG. 14 is replaced with step 50, step S41 of the flowchart shown in FIG. 14 is replaced with steps 51 and S52, and the others are the same as the flowchart shown in FIG. It is the same.

With reference to FIG. 17, when the operation of the elementary wave generator 10C is started, the above-mentioned steps S31 to S34 are sequentially executed. Then, after step S34, the elementary wave generator 10C uses the average existence time t (= αt ₀ ) and the average elementary wave number m (= βm ₀ ) to generate the elementary wave wv_m with the average elementary wave number m (= βm ₀ ). ) Are executed in parallel (step S50).

Subsequently, the above-mentioned steps S36 to S38 are sequentially executed, and when it is determined in step S38 that at least one of ΔT _m ≦ ΔT _{m_th} and Δm ≦ Δm_th does not hold, the above-mentioned step S39 is executed.

After that, the series of operations proceeds to step S34, and the above-mentioned steps S34, S50, S36 to S39 are repeated until it is determined in step S38 that ΔT _m ≤ ΔT _{m_th} and Δm ≤ Δm_th. Will be executed.

Then, in step S38, if it is determined that ΔT _m ≦ ΔT _{m_th} and Δm ≦ Δm_th, the above-mentioned step S40 is executed. After that, the element wave generator 10C calculates the average existence time t of the element wave by t = α _opt t ₀ , and calculates the average element wave number m by m = β _opt m ₀ (step S51).

Then, the elementary wave generator 10C uses the average existence time t (= α _opt t ₀ ) and the average elementary wave number m (= β _oppt m ₀ ) to generate the elementary wave wv_m with the average elementary wave number m (= β _opt m). It is executed in parallel for ₀ ) minutes (step S52). As a result, the operation of the elementary wave generator 10C is completed.

When the operation of the elementary wave generator 10C is executed according to the flowchart shown in FIG. 17, in step S33, the duration generating means 22A of the processing units 131 to 13 m sets the correction coefficient α to the initial value α ₀ and generates the frequency. The means 11A sets the correction coefficient β to the initial value β ₀ .

Further, in step S34, the duration generation means 22A of the processing units 131 to 13 m calculates the average existence time t of the elementary wave by t = αt ₀ (α = α ₀ ), and the frequency generation means 11A calculates m = βm. The average wave number m is calculated by ₀ (β = β ₀ ).

Further, in step S36, the frequency generating means 11A detects the number of signals SGE _1 to SGE _{_m} received from the elementary wave generating means 23A of the processing units 131 to 13 m as the average elementary wave number _{m_cal} .

Further, in step S37, the frequency generating means 11A calculates an error Δm (= m ₀ −m_cal) between the average elementary wave number m_cal and the measured value m ₀ of the average elementary wave number, and the duration generating means 22A of the processing unit 131 calculates. When the signal _{SGE_1} indicating that the elementary wave _{wv_1} is generated is received from the elementary wave generating means 23A, the error ΔT1 between the duration T1 generated according to the equation ( ₂ ) and the measured value _{T1_actual} of the duration is calculated. Then, when the duration generation means 22A of the processing unit 132 receives the signal _{SGE_2} indicating that the elementary wave wv_2 is generated from the elementary wave generation means 23A, the duration T2 and the duration generated according to the equation ( ₂ ) are generated. The error ΔT ₂ with the actually measured value T _{2_actual} is calculated, and similarly, the duration generating means 22A of the processing unit 13m generates the signal _{SGE_m} indicating that the raw wave wv_m is generated, and the raw wave generating means 23A. When received from, the error ΔT _m between the duration T _m generated according to the equation (2) and the measured value T _{m_actual} of the duration is calculated.

Further, in step S38, the frequency generating means 11A determines whether or not the error Δm (= m ₀ −m_cal) is equal to or less than the threshold value Δm_th, and the duration generating means 22A of the processing units 131 to 13 m, respectively. , It is determined whether or not the error ΔT ₁ to ΔT _m is equal to or less than the threshold value ΔT _m _th. Then, the frequency generating means 11A generates a signal S _YES _Δm_m or a signal S _{NO_Δm_m} according to a determination result of whether or not the error Δm (= m ₀ −m_cal) is equal to or less than the threshold value Δm_th, and is a processing unit. The signal S _YES is output to the elementary wave generating means 23A of 131 to 13 m, and the duration generating means 22A of the processing unit 131 determines whether or not the error ΔT ₁ is equal to or less than the threshold value ΔT _m _th. Whether or not the error ΔT ₂ is equal to or less than the threshold value ΔT _m _th in the duration generating means 22A of the processing unit 132 by generating _ΔT _m _1 or the signal S _NO _ΔT _m _1 and outputting it to the elementary wave generating means 23A. The signal S _YES _ΔT _m _2 or the signal S _NO _ΔT _m _2 is generated and output to the elemental wave generation means 23A according to the determination result of A signal S _YES _ΔT _m _m or a signal S _NO _ΔT _m _m is generated and output to the elementary wave generating means 23A according to the determination result of whether or not the error ΔT _m is equal to or less than the threshold value ΔT _m _th.

The raw wave generating means 23A of the processing unit 131 receives the signal S _{YES _Δm_1} or the signal _{SNO_Δm_1} from the frequency generating means _11A , and receives the signal _{SYES_ΔTm_1} or the signal _{SNO_ΔTm_1} from the duration generating means 22A. Further, the raw wave generating means 23A of the processing unit 132 receives the signal S _YES _Δm_2 or the signal S _NO _Δm_2 from the frequency generating means 11A, and receives the signal S _YES _ΔT _m _2 or the signal S _NO _ΔT _m _2 from the duration generating means 22A. receive. Hereinafter, similarly, the raw wave generating means 23A of the processing unit _13m receives the signal S _{YES _Δm_m} or the signal _{SNO_Δm_m} from the frequency generating means 11A, and receives the signal _{SYES_ΔTm_m} or the signal _{SNO_ΔTm_m} for the duration. Received from the generating means 22A.

The elementary wave generating means 23A of the processing unit 131 generates a signal S _α _1 for setting the correction coefficient α to a value other than the initial value α ₀ when any of the above-mentioned (v) to (vii). The signal S _β _1 for setting the correction coefficient β to a value other than the initial value β ₀ is generated and output to the frequency generating means 11A. Further, the elementary wave generating means 23A of the processing unit 132 receives a signal S _α _2 for setting the correction coefficient α to a value other than the initial value α ₀ when any of the above-mentioned (v) to (vii). It is generated and output to the duration generation means 22A, and a signal S _β _2 for setting the correction coefficient β to a value other than the initial value β ₀ is generated and output to the frequency generation means 11A. Hereinafter, similarly, the elemental wave generating means 23A of the processing unit 13m is a signal for setting the correction coefficient α to a value other than the initial value α ₀ when any of the above-mentioned (v) to (vii). S _α _3 is generated and output to the duration generating means 22A, and a signal S _β _3 for setting the correction coefficient β to a value other than the initial value β ₀ is generated and output to the frequency generating means 11A.

The duration generation means 22A of the processing units 131 to 13 m set the correction coefficient α to a value α _NEW other than the initial value α ₀ according to the signals S _α _1 to S _α _m, respectively, and the frequency generation means 11A sets the correction coefficient α to a value α NEW. The correction coefficient β is set to a value β _NEW other than the initial value β ₀ according to the signals S _β _1 to S _β _m (step S39).

After that, the series of operations returns to step S34, and in step S38, it is determined that the error ΔT ₁ to ΔT _m is the threshold value ΔT _{m_th} or less and the error Δm is the threshold value Δm_th or less (described above). Steps S34 to S39 are repeatedly executed until (viii).

Then, in step S38, when it is determined that the error ΔT ₁ is equal to or less than the threshold value ΔT _{m_th} and the error Δm is equal to or less than the threshold value Δm_th, the elementary wave generating means 11A of the processing unit 131 determines that the error ΔT 1 is ΔT ₁ or less. A signal _{Sopt_α} _1 for detecting the correction coefficient α _opt when ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th is generated and output to the duration generation means 22A, and ΔT ₁ ≤ threshold value is generated. A signal _{Sopt_β_1} for detecting the correction coefficient β _opt when the value is ΔT _{m_th} and the threshold value is Δm ≦ Δm_th is generated and output to the frequency generating means 11A.

Further, the elementary wave generating means 11A of the processing unit 132 generates a signal _{Sopt_α_2} for detecting the correction coefficient α _opt when ΔT ₂ ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th. Output to the duration generation means 22A to generate a signal _{Sopt_β_2} for detecting the correction coefficient β _opt when ΔT ₂ ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th to generate the frequency. Output to means 11A.

Hereinafter, in the same manner, the elementary wave generating means 11A of the processing unit 13 m has a signal _{Sopt_α} for detecting the correction coefficient α _opt when ΔT _m ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th. Generates _m and outputs it to the duration generation means 22A, and generates a signal _{Sopt_β_m} for detecting the correction coefficient β _opt when ΔT ₁ ≤ threshold value ΔT _{m_th} and Δm ≤ threshold value Δm_th. And output to the frequency generating means 11A.

In step S40, the duration generating means 22A of the processing units 131 to 13 m detects the correction coefficient α _opt according to the signals _{Sopt_α} _1 to _{Sopt_α} _m, respectively, and the frequency generating means 11A detects the signal _{Sopt_β} _1 to the signals. The correction coefficient β _opt is detected according to S _{opt_β} _m.

In step S51, the frequency generating means 11A calculates the average elementary wave number m (= β _opt m ₀ ), and the duration generating means 22A of the processing units 131 to 13 m has the average existing time t (= α _opt t) of the elementary waves. ₀ ) is calculated. Then, the frequency generating means 11A generates frequencies f ₁ to fm according to the equation (1) using the average wave number m (= β _{oppt m 0} ), and processes the generated frequencies f ₁ to _fm , respectively. It is output to the elemental wave generating means 23A of 131 to 13 m. Further, the duration generation means 22A of the processing units 131 to 13 m generates durations T ₁ to T _m , respectively, according to the equation (2) using the average existence time t (= α _opt t ₀ ) of the elementary wave. , _The generated durations T1 to _Tm are output to the elemental wave generating means 23A.

FIG. 18 is a flowchart for explaining the detailed operation of step S50 shown in FIG. In the flowchart shown in FIG. 18, step S22 of steps S22 to S26 shown in FIG. 7 is replaced with step S22A.

With reference to FIG. 18, after step S34 shown in FIG. 17, the frequency generating means 11A generates the frequency fm according to the Poisson process (according to the equation (1)) using the average wave number _m (= βm ₀ ). (Step S22A). After that, the above-mentioned steps S23 to S26 are sequentially executed.

FIG. 19 is a flowchart for explaining the detailed operation of step S52 shown in FIG. In the flowchart shown in FIG. 19, step S22 of steps S22 to S26 shown in FIG. 7 is replaced with step S22B.

With reference to FIG. 19, after step S40 shown in FIG. 17, the frequency generating means 11A uses an average wave number m (= β _{oppt m 0} ) to generate a frequency fm according to a Poisson process (according to equation (1)). Occurs (step S22A). After that, the above-mentioned steps S23 to S26 are sequentially executed.

The detailed operations of steps S24, S25, and S26 shown in FIGS. 18 and 19 are executed according to the flowcharts shown in FIGS. 8, 9, and 10, respectively.

As described above, in the element wave generator 10C, the average element wave number m approaches the measured value m ₀ , and the duration T _m of the element wave approaches the actually measured value T _{m_actual} (average existence time t of the element wave). Generates a plurality of elementary waves wv_1 to wv_m in parallel (so that the measured value approaches t ₀ ).

Hereinafter, application examples of the elemental wave generators 10, 10A, 10B, and 10C will be described.

[Application Example 1]
FIG. 20 is a schematic diagram of the terminal device in Application Example 1. With reference to FIG. 20, the terminal device 100 includes an antenna 101, a wave generator 102, a detection means 103, and a transmission means 104.

The elemental wave generator 102 includes an elemental wave generator 10. Then, the elementary wave generator 102 generates the elementary waves wv_1 to wv_m by the above-mentioned method, and outputs the generated elementary waves wv_1 to wv_m to the detection means 103.

The detection means 103 receives the elementary waves wv_1 to wv_m from the elementary wave generator 102. Then, the detection means 103 detects the frequency _fEX and the period T _period in which the elemental wave is not generated, based on the elemental wave wv_1 to wv_m.

Then, the detecting means 103 detects whether or not the radio wave having the frequency _fEX is used (that is, performs carrier sense) via the antenna 101 at the timing when the period T _period starts.

Then, the detection means 103 outputs the result of the carrier sense to the transmission means 104.

The transmitting means 104 receives the result of the carrier sense from the detecting means 103. Then, when the result of the carrier sense indicates that the radio wave is not used, the transmitting means 104 generates a transmission signal and transmits the generated transmission signal via the antenna 101.

On the other hand, the transmission means 104 stops the transmission of the transmission signal when the result of the carrier sense indicates that the radio wave is used.

FIG. 21 is a flowchart for explaining the operation of the terminal device 100 shown in FIG.

With reference to FIG. 121, when a series of operations are started, the elemental wave generator 102 generates elemental waves wv_1 to wv_m according to the flowchart shown in FIG. 7 (including the flowcharts shown in FIGS. 8 to 10). Step S61). Then, the elemental wave generator 102 outputs the generated elemental waves wv_1 to wv_m to the detection means 103.

The detection means 103 receives the elementary waves wv_1 to wv_m from the elementary wave generator 102, and detects the frequency _fEX and the period T _period in which the elementary waves are not generated based on the received elementary waves wv_1 to wv_m (step). S62).

Then, the detection means 103 detects (that is, carrier sense) whether or not the radio wave having the frequency _fEX is used via the antenna 101 at the timing when the period T _period starts (step S63).

Then, the detection means 103 outputs the carrier sense result to the transmission means 104.

The transmitting means 104 determines whether or not the radio wave is used based on the result of the carrier sense received from the detecting means 103 (step S64).

When it is determined in step S64 that radio waves are used, the transmission means 104 stops the transmission of the transmission signal (step S65).

On the other hand, when it is determined in step S64 that the radio wave is not used, the transmission means 104 transmits a transmission signal (step S66).

Then, after step S65 or step S66, the series of operations ends.

The terminal device 100 detects the frequency _fEX and the period T _period in which the element wave is not generated based on the element waves wv_1 to wv_m generated by the element wave generator 102, and detects the frequency at the timing when the period T _period starts. Since the presence or absence of the use of radio waves having _fEX is detected (see steps S62 and S63), it is possible to predict the frequency at which carrier sense is performed and the timing of carrier sense based on the frequency _fEX and the period T _period . , Carrier sense can be started quickly, and the presence or absence of radio waves can be detected quickly.

Therefore, the signal transmission operation in the terminal device 100 can be performed quickly.

The elemental wave generator 102 of the terminal device 100 may be composed of any of the elemental wave generators 10A, 10B, and 10C instead of the elemental wave generator 10.

Even when the element wave generator 102 is composed of any of the element wave generators 10A, 10B, and 10C, the operation of the terminal device 100 is executed according to the flowchart shown in FIG.

In this case, the elemental wave generator 102 generates the elemental waves wv_1 to wv_m more accurately, and outputs the generated elemental waves wv_1 to wv_m to the detection means 103.

Therefore, the frequency _fEX and the timing at which the carrier sense is performed can be accurately predicted, and the reliability of the carrier sense can be improved.

Further, when the elementary wave generator 102 of the terminal apparatus 100 is composed of any of the elementary wave generators 10A, 10B, and 10C, the terminal apparatus 100 does not actually perform carrier sense, but at the detected frequency _fEX and timing. The transmission signal may be transmitted.

[Application example 2]
FIG. 22 is a schematic diagram of the detection device in Application Example 2. With reference to FIG. 22, the detection device 200 includes an antenna 201, a wave generator 202, a receiving means 203, and a detecting means 204.

The elemental wave generator 202 includes an elemental wave generator 10. Then, the elemental wave generator 202 generates the elemental waves wv_1 to wv_m by the above-mentioned method, and outputs the generated elemental waves wv_1 to wv_m to the detection means 204.

The receiving means 203 performs carrier sense via the antenna 201 at an arbitrary frequency within the frequency band used for wireless communication, and outputs the result of the carrier sense to the detection means 204.

The detecting means 204 receives the raw waves wv_1 to wv_m from the raw wave generator 202, and receives the carrier sense result from the receiving means 203.

Then, the detection means 204 detects the durations T1 to _Tm based on the elementary waves _{wv_1} to wv_m. Further, the detection means 204 detects the duration _TWV of the radio wave having a power value larger than the threshold value based on the result of the carrier sense. The threshold value is, for example, −80 dBm.

Then, the detection means 204 determines whether or not the duration T _WV is different from the duration T ₁ to T _m .

When it is determined that the duration T _WV is different from the duration T ₁ to T _m , the detecting means 204 detects the radio wave having the duration T _WV as out-of-band radiation (spurious).

FIG. 23 is a flowchart for explaining the operation of the detection device 200 shown in FIG. 22.

With reference to FIG. 23, when a series of operations are started, the elemental wave generator 202 generates elemental waves wv_1 to wv_m according to the flowchart shown in FIG. 7 (including the flowcharts shown in FIGS. 8 to 10). Step S71). Then, the elemental wave generator 202 outputs the generated elemental waves wv_1 to wv_m to the detection means 204.

The receiving means 203 performs carrier sense at an arbitrary frequency in the frequency band used for wireless communication (step S72). Then, the receiving means 203 outputs the result of the carrier sense to the detecting means 204.

The detecting means 204 receives the elementary waves wv_1 to wv_m from the elementary wave generator 202, and receives the result of carrier sense from the receiving means 203.

Then, the detection means 204 detects the duration T ₁ to T _m based on the elementary waves wv_1 to wv_m, and based on the result of the carrier sense, the duration T _WV of the radio wave having a power value larger than the threshold value. Is detected (step S73).

Then, the detection means 204 determines whether or not the duration T _WV is different from the duration T ₁ to T _m (step S74).

When it is determined in step S74 that the duration T _WV is different from the duration T ₁ to T _m , the detection means 204 detects the radio wave having the duration T _WV as out-of-band radiation (spurious) (step S75). ..

On the other hand, when it is determined in step S74 that the duration T _WV is the same as the duration T ₁ to T _m , it is determined that the detection means 204 has not detected out-of-band radiation (spurious) (step S76). ..

Then, after step S75 or step S76, the series of operations ends.

As described above, the detection device 200 can detect out-of-band radiation (spurious) by using the durations T1 to _Tm of the raw waves _{wv_1} to wv_m generated by the raw wave generator 202.

The elemental wave generator 202 of the detection device 200 may be composed of any of the elemental wave generators 10A, 10B, and 10C instead of the elemental wave generator 10.

Even when the element wave generator 202 includes any of the element wave generators 10A, 10B, and 10C, the operation of the detection device 200 is executed according to the flowchart shown in FIG.

As a result, each of the elementary wave generators 10A, 10B, and 10C accurately generates the durations T1 to _Tm as described above, so that out _- of-band radiation (spurious) can be accurately detected.

In the embodiment of the present invention, the operation of the elementary wave generators 10, 10A, 10B, 10C may be performed by software.

In this case, each of the element wave generators 10, 10A, 10B, and 10C includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).

The ROM of the element wave generator 10 stores the program Prog_A including steps S11 to S16 of the flowchart shown in FIG.

The RAM temporarily stores the frequency f _n , the duration T _n , and the unwavering power P _n .

Then, the CPU reads the program Prog_A from the ROM and executes it, and generates the elementary waves wv_1 to wv_m by the above-mentioned method.

Further, the ROM of the raw wave generator 10A stores a program Prog_B including steps S21 to S26 of the flowchart shown in FIG. 7 (including the flowcharts shown in FIGS. 8 to 10).

The RAM temporarily stores the frequency f _n , the duration T _n , T _s , and the elementary wave power P _n .

Then, the CPU reads the program Prog_B from the ROM and executes it, and generates the elementary waves wv_1 to wv_m by the above-mentioned method.

Further, the ROM of the raw wave generator 10B stores the program Prog_C including steps S31 to S41 of the flowchart shown in FIG. Then, the CPU reads the program Prog_C from the ROM and executes it, and generates the elementary waves wv_1 to wv_m by the above-mentioned method.

Further, the ROM of the elementary wave generator 10C stores a program Prog_D including steps S31 to S34, S50, S36 to S40, S51, and S52 of the flowchart shown in FIG. 17 (including the flowcharts shown in FIGS. 18 and 19). .. Then, the CPU reads the program Prog_D from the ROM and executes it, and generates the elementary waves wv_1 to wv_m by the above-mentioned method.

The programs Prog_A to Program Prog_D may be recorded on a recording medium such as a CD or DVD and distributed.

When a recording medium on which any of the programs Prog_A to Program Prog_D is recorded is attached to the personal computer, the CPU reads any of the programs Prog_A to Program Prog_D from the recording medium and executes the program. Occurs.

Therefore, the recording medium on which any of the programs Prog_A to Program Prog_D is recorded is a computer (CPU) readable recording medium.

Further, in the embodiment of the present invention, the operations of the terminal device 100 and the detection device 200 may be executed by software.

In this case, each of the terminal device 100 and the detection device 200 includes a CPU, a ROM, and a RAM.

The ROM of the terminal device 100 stores the program Prog_E including steps S61 to S66 of the flowchart shown in FIG.

The RAM temporarily stores the results of the frequency f _n , the duration T _n , the unwavering power P _n , and the carrier sense.

Then, the CPU reads the program Prog_E from the ROM, executes the program, transmits the transmission signal, or stops the transmission of the transmission signal by the method described above.

Further, the ROM of the detection device 200 stores the program Prog_F including steps S71 to S76 of the flowchart shown in FIG. 23.

The RAM temporarily stores the frequency f _n , the duration T _n , T _s , the unwavering power P _n , the carrier sense result, and the duration T _WV .

Then, the CPU reads the program Prog_F from the ROM and executes it, and detects out-of-band radiation (spurious) by the above-mentioned method.

According to the above-described first and second embodiments, the elemental wave generator according to the embodiment of the present invention is
A frequency generating means that generates an elementary wave frequency according to a Poisson process within the frequency bandwidth used for wireless communication.
The duration generation means that generates the first duration, which is the duration in which the elemental wave is generated, according to the exponential distribution,
A power generation means that generates an arbitrary power value selected from the range of power values defined by the minimum and maximum values of radio wave power as raw wave power, and
It suffices to provide an elemental wave generating means for generating an elemental wave having an elemental wave power from the time when the use of the radio wave is started to the time when the first duration elapses at the generated frequency.

This is because if the frequency generating means, the duration generating means, the power generating means, and the element wave generating means are provided, the elemental waves distributed in the frequency axis direction and the time axis direction can be generated.

Further, in the program according to the embodiment of the present invention, the frequency generating means has the first step of generating the frequency of the elementary wave according to the Poisson process within the frequency bandwidth used for wireless communication.
The second step in which the duration generating means generates the first duration, which is the duration in which the elementary wave is generated, according to the exponential distribution.
The third step in which the power generation means generates an arbitrary power value selected from the range of the power value defined by the minimum value and the maximum value of the radio wave power as the raw wave power.
The computer is a fourth step in which the elemental wave generating means generates an elemental wave having an elemental wave power from the time when the use of the radio wave is started to the time when the first duration elapses at the generated frequency. Any program can be used to execute the program.

This is because if a computer is made to execute the first step to the fourth step, it is possible to generate elementary waves distributed in the frequency axis direction and the time axis direction.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the embodiments described above, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The present invention applies to a raw wave generator, a program to be executed by a computer, and a computer-readable recording medium on which the program is recorded.

1,11,11A frequency generating means, 2,22,22A duration generator, 3,21 power generating means, 4,23,23A element wave generating means, 10,10A, 10B, 10C, 102,202 element wave generation Equipment, 100 terminal equipment, 101,201 antenna, 103,204 detection means, 104 transmission means, 121-12m, 131-13m processing unit.

Claims (18)

A frequency generating means that generates an elementary wave frequency according to a Poisson process within the frequency bandwidth used for wireless communication.
The duration generation means that generates the first duration, which is the duration in which the elemental wave is generated, according to the exponential distribution,
A power generation means that generates an arbitrary power value selected from the range of power values defined by the minimum and maximum values of radio wave power as raw wave power, and
At the generated frequency, the elemental wave generation including the elemental wave generation means for generating the elemental wave having the elemental wave power from the time when the use of the radio wave is started until the first duration elapses. Device. The frequency generating means executes a first process of generating a number of frequencies corresponding to the average wave number in the frequency bandwidth according to the Poisson process.
The duration generating means executes a second process of generating the first duration corresponding to the average wave number according to the exponential distribution.
The elemental wave generator according to claim 1, wherein the electric power generating means executes a third process of generating an elemental wave electric power corresponding to an average elemental wave number. The duration generating means determines whether or not the generated first duration has ended in the second process when the raw wave power generated by the power generating means is not zero, and said. The elemental wave generator according to claim 2, wherein the first duration is repeatedly generated according to an exponential distribution until it is determined that the first duration has ended. The fourth duration generation means further sets the elementary wave power to zero and generates a second duration, which is a duration in which no elementary wave is generated, by a number corresponding to the average number of elementary waves. The elemental wave generator according to claim 2 or 3, wherein the process is executed. The duration generating means determines whether or not the generated second duration has ended in the fourth process, and is an index until it is determined that the second duration has ended. The elemental wave generator according to claim 4, wherein the second duration is repeatedly generated according to the distribution. The element wave generator according to claim 4 or 5, wherein the second process, the third process, and the fourth process are executed in parallel by the average number of elementary waves. In the first process, the frequency generating means calculates the average wave number per unit time corrected so as to be close to the measured average wave number per unit time, and the corrected average wave number per unit time. A number of frequencies corresponding to the average wave number are generated according to the Poisson process.
In the second process, the duration generating means generates a third duration obtained by correcting the first duration so as to be close to the measured duration of the radio wave.
The elemental wave generating means generates an elemental wave having the elemental wave power at the frequency generated by the frequency generating means from the time when the use of the radio wave is started until the lapse of the third duration. The elemental wave generator according to claim 2. In the first process, the frequency generating means has the first average wave number obtained by (the measured average wave number per unit time) × the first correction coefficient per the measured unit time. The first correction coefficient is determined so as to be close to the average prime wave number of, and the determined first correction coefficient is multiplied by the measured average prime wave number per unit time to obtain the second average prime wave number. Calculate and generate a number of frequencies corresponding to the calculated second average wave number.
In the second process, the duration generating means has a fourth duration obtained by (the measured duration of the radio wave) × the second correction coefficient, which is close to the duration of the measured radio wave. The second correction coefficient is determined so as to be, and the determined second correction coefficient is multiplied by the duration of the actually measured radio wave to generate the third duration, according to claim 7. Elementary wave generator. The first step in which the frequency generating means generates the frequency of the elementary wave according to the Poisson process within the frequency bandwidth used for wireless communication.
The second step in which the duration generating means generates the first duration, which is the duration in which the elementary wave is generated, according to the exponential distribution.
The third step in which the power generation means generates an arbitrary power value selected from the range of the power value defined by the minimum value and the maximum value of the radio wave power as the raw wave power.
A fourth step in which the elemental wave generating means generates an elemental wave having the elemental wave power from the time when the use of the radio wave is started to the time when the first duration elapses at the generated frequency. And a program to make a computer execute. In the first step, the frequency generating means performs a first process of generating a number of frequencies corresponding to the average wave number in the frequency bandwidth according to the Poisson process.
In the second step, the duration generating means executes a second process of generating the first duration corresponding to the average wave number according to the exponential distribution.
The program for causing the computer according to claim 9, wherein in the third step, the power generating means executes a third process of generating a number of raw wave powers corresponding to an average raw wave number. In the second step, when the raw wave power generated by the power generating means is not zero, the duration generating means has finished the generated first duration in the second process. The computer according to claim 10, which repeatedly executes the generation of the first duration according to the exponential distribution until it is determined whether or not the first duration has ended. Program for. In the second step, the duration generating means further sets the raw wave power to zero, and the second duration, which is the duration in which the raw wave is not generated, corresponds to the average raw wave number. The program for causing the computer according to claim 10 or claim 11 to execute the fourth process generated by the number of times. In the second step, the duration generating means determines whether or not the generated second duration has ended in the fourth process, and the second duration has ended. The program for causing the computer according to claim 12, to repeatedly execute the generation of the second duration according to the exponential distribution until it is determined to be present. The program for causing the computer according to claim 12 or 13 , wherein the second process, the third process, and the fourth process are executed in parallel by the average wave number. The first aspect of any one of claims 12 to 14, wherein the second process, the third process, and the fourth process are executed a number of times determined according to the time required for simulation. A program to run on your computer. In the first step, the frequency generating means calculates the average wave number per unit time corrected so as to be close to the measured average wave number per unit time, and the corrected average wave number per unit time is calculated. A number of frequencies corresponding to the average wave number are generated according to the Poisson process.
In the second step, the duration generating means generates a third duration obtained by correcting the first duration so as to be close to the measured duration of the radio wave.
In the fourth step, the elemental wave generating means is the elemental wave from the time when the use of the radio wave is started to the elapse of the third duration at the frequency generated by the frequency generating means. The program for causing the computer according to claim 10, which generates an elementary wave having electric waves. In the frequency generating means, in the first step, the first average wave number obtained by (the measured average wave number per unit time) × the first correction coefficient is the measured unit time. The first correction coefficient is determined so as to be close to the average prime wave number of, and the determined first correction coefficient is multiplied by the measured average prime wave number per unit time to obtain the second average prime wave number. Calculate and generate a number of frequencies corresponding to the calculated second average wave number.
In the second step, the duration generating means has a fourth duration obtained by (the measured duration of the radio wave) × the second correction coefficient, which is close to the duration of the measured radio wave. 16. The 16th aspect of claim 16, wherein the second correction coefficient is determined so as to be obtained, and the determined second correction coefficient is multiplied by the duration of the actually measured radio wave to generate the third duration. A program to run on a computer. A computer-readable recording medium on which the program according to any one of claims 9 to 17 is recorded.

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