JP3417521B2 - Received SIR measurement method, apparatus and transmission power control apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reception SIR measuring method, device and transmission power control device when a CDMA (code division multiple access) system is used in mobile communication.

[0002]

2. Description of the Related Art In the CDMA system, since a plurality of users share the same frequency band inside and outside the cell in which they are located, signals of other users become interference components and cause deterioration of communication quality of their own channel. Become. For example, when a user 1 near the base station and a user 2 far from the base station communicate at the same time, the received power from the user 1 at the base station is larger than the received power from the user 2. Therefore, the communication quality of the user 2 is greatly deteriorated due to the interference of the user 1, that is, the near-far problem occurs.

Transmission power control has been studied as a technique for solving the near-far problem. The transmission power control is performed so that the reception power at the receiving station or SIR (desired signal to interference signal power ratio) becomes constant regardless of the position of the mobile station.
It controls the transmission power from the mobile station.

As a technique for making the transmission power control follow the instantaneous fluctuation of the reception power, there is a closed loop system using a transmission power control bit. The base station receives the desired wave S
The IR is measured, and the transmission power control bit for controlling the transmission power from the mobile station is determined based on the measurement result. Also, the base station extracts the transmission power control bit inserted in the transmission signal and determines the transmission power according to the instruction of the transmission power control bit.

[0005]

In the conventional SIR measurement technique, the received signal power measurement is performed using the received data symbols determined by the interpolation, so that the envelope of the received signal drops due to fading. There is a possibility that the difference between the actually measured value of the received data symbol and the interpolated value becomes large, and the measurement accuracy of the desired reception wave power deteriorates.

When the entire predetermined pilot signal interval is used as the fading / envelope power integration section, the measurement accuracy of the received interference wave power may be deteriorated due to an error in the signal point determination of the received signal. .

Therefore, an object of the present invention is to provide a received SIR measuring method, device, and transmission power control device for improving the received SIR measurement accuracy.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 is that "a signal in which a pilot signal known by the transmitting side is inserted into an information signal at a predetermined interval is received by the receiving side. Using a synchronous detection device that performs synchronous detection with, the power value of the fading envelope obtained by interpolation is calculated in the baseband complex signal space, and the power value is averaged over a predetermined pilot signal interval section. , A desired reception wave power measurement step in which the average value is the desired reception wave power, and a ratio of a reception data symbol to a fading envelope obtained by interpolation is calculated on a complex signal space, and the ratio is set to the above-mentioned ratio. The square of the fading envelope is multiplied, the signal point is determined from the multiplication result, and the received data symbol and the determination value are used to determine a signal including an interference component. The Jingu envelope is calculated,
The difference between the calculated value and the fading envelope by the interpolation is calculated, the square of the difference is integrated in a pilot signal interval section, the integrated value is averaged over a plurality of pilot interval sections, and the average is calculated. And a step of calculating a ratio between the desired received wave power and the received interference wave power, and the calculated ratio is SIR (desired signal to interference). Signal power ratio).

According to the second aspect of the invention, "a baseband complex is detected by using a synchronous detection device which synchronously detects, on the receiving side, a signal in which a pilot signal known by the transmitting side is inserted into an information signal at a predetermined interval. In the signal space, the power value of the fading envelope obtained by the interpolation is calculated, the power value is averaged in a predetermined pilot signal interval section, and the desired signal power is the desired signal power. In the measurement step, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal point is calculated from the multiplication result. And a fading envelope including an interference component is calculated using the received data symbol and the judgment value, The average value of the received data symbols over period DOO signal interval is calculated, and calculating a difference between said average value and the fading envelope, 2 the said difference
Power is integrated in the interval of the pilot signal interval, the integrated value is averaged over the interval of a plurality of pilot intervals, the received interference wave power measuring step of using the average value as the received interference wave power, the desired reception wave power and the A step of calculating a ratio with the received interference wave power, and the calculated ratio is S
IR (desired signal-to-interference signal power ratio) "is provided.

According to a third aspect of the invention, "a baseband complex is detected by using a synchronous detection device which synchronously detects a signal in which a known pilot signal is inserted into an information signal by a transmitting side at a predetermined interval on a receiving side. In the signal space, the power value of the fading envelope obtained by the interpolation is calculated, the power value is averaged in a predetermined pilot signal interval section, and the desired signal power is the desired signal power. In the measurement step, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal point is calculated from the multiplication result. , A fading envelope including an interference component is calculated using the received data symbol and the decision value, and the pilot The average value of the received data symbols is calculated over the signal section, the difference between the fading envelope and the average value is calculated, the square of the difference is integrated only in the pilot signal section, and the integrated value is Averaged over the interval of the pilot interval, the received interference wave power measuring step of the average value as the received interference wave power, and a calculation step of calculating the ratio of the desired reception wave power and the received interference wave power, The calculated ratio is SI
R (desired signal-to-interference signal power ratio) "is provided.

According to a fourth aspect of the present invention, in a coherent detection apparatus for coherently detecting at a receiving side a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side, a complex signal space of a base band is provided. In the above, the power value of the fading envelope obtained by the interpolation is calculated, the power value is averaged in a section of a predetermined pilot signal interval, and the desired received wave power measuring step is made to be the desired desired wave power. And in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is calculated as the pilot signal interval. Average in a section, calculate the difference between the average value and the multiplication result, and integrate the square of the difference in the section of the pilot signal interval. A received interference wave power measuring step in which the integrated value is averaged over a plurality of pilot intervals and the average value is used as received interference wave power, and a calculation for calculating a ratio between the desired received wave power and the received interference wave power And a step of setting the calculated ratio as SIR (power ratio of desired signal to interference signal) ”.
I will provide a.

According to the invention of claim 5, "in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by interpolation is calculated, and the ratio is multiplied by the square of the fading envelope. , Averaging the multiplication results in the interval of the pilot signal interval,
A desired reception wave power measuring step in which the desired square wave power of the absolute value of the average value is used, and a signal point is determined on the complex signal space from the multiplication result, and the reception data symbol and the determination value are determined. A fading envelope including an interference component is calculated by using the calculated value, a difference between the calculated value and the fading envelope by the interpolation is calculated, and the square of the difference is integrated in the interval of the pilot signal interval. Is averaged over multiple pilot intervals,
The method includes: a received interference wave power measuring step using the average value as a received interference wave power; and a calculation step of calculating a ratio between the desired received wave power and the received interference wave power, the calculated ratio being an SIR (desired signal). Interference signal power ratio).

According to a sixth aspect of the present invention, "in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by interpolation is calculated, and the ratio is multiplied by the square of the fading envelope. , Averaging the multiplication results in the interval of the pilot signal interval,
A desired reception wave power measuring step in which the desired square wave power of the absolute value of the average value is used, and a signal point is determined on the complex signal space from the multiplication result, and the reception data symbol and the determination value are determined. Calculating a fading envelope including an interference component, calculating an average value of received data symbols over the interval of the pilot signal interval,
A difference between the fading envelope and the average value is calculated, the square of the difference is integrated in a pilot signal interval section, the integrated value is averaged over a plurality of pilot interval sections, and the average value is received interference. A step of measuring the received interference wave power as the wave power and a step of calculating the ratio between the desired received wave power and the received interference wave power, and the calculated ratio is SIR (desired signal to interference signal power ratio) And a reception SIR measuring method ”.

According to a seventh aspect of the present invention, "a ratio of a received data symbol to a fading envelope obtained by interpolation is calculated in a complex signal space, and the ratio is multiplied by a square of the fading envelope. , Averaging the multiplication results in the interval of the pilot signal interval,
A desired reception wave power measurement step in which the absolute value of the average value is the desired reception wave power, and a signal point is determined from the reception data symbol on the complex signal space, and the interference component is determined using the reception data symbol and the determination value. Including fading
The envelope is calculated, the average value of the received data symbols is calculated over the pilot signal section, the difference between the fading envelope and the average value is calculated, and the square of the difference is integrated only in the pilot signal section. , Averaging the integrated values over a plurality of pilot interval sections, and measuring a received interference wave power using the average value as a received interference wave power, and calculating a ratio between the desired received wave power and the received interference wave power. And a calculation step to
The calculated ratio is SIR (desired signal to interference signal power ratio)
And a reception SIR measuring method ”.

According to an eighth aspect of the present invention, "a ratio of a received data symbol to a fading envelope obtained by interpolation is calculated in a complex signal space, and the ratio is multiplied by the square of the fading envelope. , Averaging the multiplication results in the interval of the pilot signal interval,
The desired reception wave power measurement step in which the reception desired wave power is the square of the absolute value of the average value, and the ratio of the reception data symbol to the fading envelope obtained by interpolation are calculated in the complex signal space. , The ratio is multiplied by the square of the fading envelope, the multiplication results are averaged in the interval of pilot signal intervals, the difference between the average value and the multiplication result is calculated, and the square of the difference is the pilot signal. A received interference wave power measuring step of integrating the interval values, averaging the integrated values over a plurality of pilot interval intervals, and using the average value as the received interference wave power; the desired received wave power and the received interference wave power And a calculation step for calculating a ratio of the received SIR and the calculated ratio to be SIR (power ratio of desired signal to interference signal).
Measurement method ".

According to a ninth aspect of the present invention, "A baseband complex is detected by using a synchronous detection device that synchronously detects a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmission side on the reception side. On the signal space, there is provided means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and the average value is the desired received signal power. And a means for calculating a ratio of a received data symbol to a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope to the ratio. Means for multiplying, means for determining a signal point from the multiplication result, and an interference component including the received data symbol and the determination value Means for calculating a Ejingu envelope, means for calculating a difference between the fading envelope by between said interpolation and the computed value, and means for integrating the square of the difference in the interval of the pilot signal interval,
A means for averaging the integrated value over a plurality of intervals of pilot intervals, a received interference wave power measuring circuit having the average value as received interference wave power, and a ratio of the desired received wave power and the received interference wave power. And an arithmetic circuit for calculating
The calculated ratio is SIR (desired signal to interference signal power ratio)
And a receiving SIR measuring device ”.

According to a tenth aspect of the present invention, "a baseband complex is detected by using a synchronous detection device that synchronously detects a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmission side on the reception side. On the signal space, there is provided means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and the average value is the desired received signal power. And a means for calculating a ratio of a received data symbol to a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope to the ratio. Means for multiplying, a means for determining a signal point from the multiplication result, and an interference component including the received data symbol and the determination value. Means for calculating a fading envelope, means for calculating an average value of received data symbols over the interval of the pilot signal interval, means for calculating a difference between the fading envelope and the average value, and a square of the difference In a pilot signal interval section, and a means for averaging the integrated value over a plurality of pilot interval sections, a received interference wave power measurement circuit that uses the average value as received interference wave power, and the reception request. A reception SIR, comprising: an arithmetic circuit for calculating a ratio between the wave power and the received interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
Measuring device ".

The invention according to claim 11 is that "a signal in which a known pilot signal is inserted into an information signal by a transmitting side at a predetermined interval is synchronously detected by a receiving side by using a synchronous detecting device. On the signal space, there is provided means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and the average value is the desired received signal power. And a means for calculating a ratio of a received data symbol to a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope to the ratio. Means for multiplying, means for determining a signal point from the multiplication result, and an interference component using the received data symbol and the determination value A means for calculating a fading envelope, a means for calculating an average value of the received data symbols over the pilot signal section, a means for calculating a difference between the fading envelope and the average value, and a square of the difference. A means for integrating only in the section of the pilot signal, a means for averaging the integrated value over a section of a plurality of pilot intervals, a received interference wave power measuring circuit using the average value as received interference wave power, and the desired reception wave A reception SIR measuring apparatus is provided, which is provided with an arithmetic circuit for calculating a ratio between electric power and the received interference wave power, and sets the calculated ratio as SIR (desired signal to interference signal power ratio).

According to a twelfth aspect of the present invention, "a baseband complex is detected by using a synchronous detection device which synchronously detects a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side. On the signal space, there is provided means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and the average value is the desired received signal power. And a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and a ratio of the square of the fading envelope to the ratio. Means for multiplying, means for averaging the multiplication result in the interval of the pilot signal interval, and calculation of a difference between the average value and the multiplication result Means, means for accumulating the square of the difference in the interval of pilot signal intervals, and means for averaging the integrated value over intervals of a plurality of pilot intervals, the received interference wave having the average value as received interference wave power A power measuring circuit and an arithmetic circuit for calculating the ratio of the desired received wave power and the received interference wave power are provided, and the calculated ratio is calculated by SIR.
(Reception SIR measurement device), which is characterized by (desired signal to interference signal power ratio).

According to a thirteenth aspect of the present invention, there is provided "means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope in the ratio. And a means for averaging the multiplication result in the interval of the pilot signal interval, a desired received wave power measuring circuit for taking the square of the absolute value of the average value as the desired desired wave power, and a complex signal space. Above, means for calculating the ratio of the received data symbols to the fading envelope obtained by interpolation, and the fading
Means for multiplying the square of the envelope, means for determining a signal point from the multiplication result, means for calculating a fading envelope including an interference component using the received data symbol and the determination value, the calculated value and the A means for calculating a difference from a fading envelope by interpolation, a means for integrating the square of the difference in a pilot signal interval section, and a means for averaging the integrated value over a plurality of pilot interval sections, A reception interference wave power measurement circuit that uses the average value as the reception interference wave power, and an arithmetic circuit that calculates the ratio of the reception desired wave power and the reception interference wave power are provided. Signal to interference signal power ratio).

According to a fourteenth aspect of the invention, there is provided "means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope in the ratio. And a means for averaging the multiplication result in the interval of the pilot signal interval, a desired received wave power measuring circuit for taking the square of the absolute value of the average value as the desired desired wave power, and a complex signal space. Above, means for calculating the ratio of the received data symbols to the fading envelope obtained by interpolation, and the fading
Means for multiplying the square of the envelope, means for determining a signal point from the multiplication result, means for calculating a fading envelope including an interference component using the received data symbol and the determination value, and Means for calculating the average value of the received data symbols over the interval, means for calculating the difference between the fading envelope and the average value, means for integrating the square of the difference in the interval of pilot signal intervals, and the integration A means for averaging the values over a plurality of intervals of pilot intervals, a received interference wave power measurement circuit that uses the average value as received interference wave power, and a ratio between the desired received wave power and the received interference wave power. An arithmetic circuit is provided, and the calculated ratio is calculated by SIR.
(Reception SIR measurement device), which is characterized by (desired signal to interference signal power ratio).

According to a fifteenth aspect of the invention, there is provided "means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope to the ratio. And a means for averaging the multiplication result in the interval of the pilot signal interval, a desired received wave power measuring circuit for taking the square of the absolute value of the average value as the desired desired wave power, and a complex signal space. Above, means for calculating the ratio of the received data symbols to the fading envelope obtained by interpolation, and the fading
Means for multiplying the square of the envelope, means for determining a signal point from the multiplication result, means for calculating a fading envelope including an interference component using the received data symbol and the determination value, and over the interval of the pilot signal Means for calculating the average value of the received data symbols, means for calculating the difference between the fading envelope and the average value, means for integrating the square of the difference only in the pilot signal section, and the integrated value A means for averaging over a plurality of intervals of pilot intervals, a received interference wave power measurement circuit having the average value as received interference wave power,
A reception S comprising: an arithmetic circuit for calculating a ratio between the desired reception wave power and the reception interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device "is provided.

According to a sixteenth aspect of the invention, there is provided "means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and a square of the fading envelope in the ratio. And a means for averaging the multiplication result in the interval of the pilot signal interval, a desired received wave power measuring circuit for taking the square of the absolute value of the average value as the desired desired wave power, and a complex signal space. Above, means for calculating the ratio of the received data symbols to the fading envelope obtained by interpolation, and the fading
Means for multiplying the square of the envelope, means for averaging the multiplication results in the interval of pilot signal intervals, means for calculating the difference between the average value and the multiplication result, and the square of the difference for the pilot signal intervals. Means for integrating in a section, means for averaging the integrated value over a section of a plurality of pilot intervals, a received interference wave power measuring circuit using the average value as received interference wave power, the desired received wave power, and the reception And a calculation circuit for calculating the ratio with the interference wave power, and the calculated ratio is SIR (desired signal to interference signal power ratio).

According to a seventeenth aspect of the present invention, there is provided "means for comparing an SIR measurement result based on the reception SIR measuring method according to the first aspect with a preset target value of SIR, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to an eighteenth aspect of the present invention, there is provided "means for comparing an SIR measurement result based on the reception SIR measuring method according to the second aspect with a preset target value of SIR, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a nineteenth aspect of the invention, there is provided "means for comparing the SIR measurement result based on the reception SIR measuring method according to the third aspect with a preset SIR target value, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a twentieth aspect of the present invention, there is provided "means for comparing an SIR measurement result based on the received SIR measuring method according to the fourth aspect with a preset SIR target value, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a twenty-first aspect of the invention, there is provided "means for comparing an SIR measurement result based on the reception SIR measuring method according to the fifth aspect with a preset target value of SIR, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a twenty-second aspect of the present invention, there is provided "means for comparing an SIR measurement result based on the reception SIR measuring method according to the sixth aspect with a preset target value of SIR, and based on the comparison result, a counter Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a twenty-third aspect of the present invention, there is provided "means for comparing an SIR measurement result based on the reception SIR measuring method according to the seventh aspect with a preset SIR target value, and an opposition based on the comparison result. Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

According to a twenty-fourth aspect of the present invention, there is provided "means for comparing a SIR measurement result based on the reception SIR measuring method according to the eighth aspect with a preset target value of SIR, and an opposition based on the comparison result. Means for transmitting a transmission power control signal to the station, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and controlling the transmission power of the own station according to the demodulated transmission power control signal And a means for performing the transmission power control device ".

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION The embodiments of the present invention described below provide a desired reception wave power measuring method for measuring a desired reception wave power by directly using an actual measurement value of the amplitude of a reception data symbol.

Since the pilot signal is known to both the transmitting station and the receiving station, it is possible to calculate the fading envelope power including the noise component without causing a signal point determination error. Therefore, it is provided with means for integrating the difference between the average value of the transmission data symbols and the fading envelope including the noise component in the pilot signal section, and means for averaging the integrated values over a plurality of slots, and the integrated value is used for the reception interference wave. A method for measuring received interference power using electric power is provided.

An example of an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an example of a signal structure in the case of performing synchronous detection using a pilot signal. A pilot signal having a known phase on both the transmitting side and the receiving side is periodically inserted into the transmission signal. One period between pilot signals is called a slot.

FIG. 2 is a diagram showing the received desired wave power measuring method described in claims 1 to 4 on a complex signal space. Here, the transfer function 1 is obtained by linearly interpolating the transfer function obtained from the pilot signal in the information symbol section. The transfer function of each information symbol is averaged within one slot, and the desired received wave power 2 is obtained as the square of the average distance.

Thus, a signal in which a known pilot signal is inserted into the information signal at a predetermined interval by the transmission side is interpolated in the baseband complex signal space by using a coherent detection device that coherently detects at the reception side. There is obtained a desired received wave power measuring step of calculating a power value of the fading envelope obtained by the interpolation, averaging the power values in a section of a predetermined pilot signal interval, and setting the average value as a desired received wave power.

FIG. 3 is a diagram showing the received desired wave power measuring method described in claims 5 to 8 in a complex signal space. Here, the transfer function 4 corresponds to the transfer function 1 in FIG. By dividing the received data symbol 3 by the transfer function 4, a provisional information symbol 5 in which the transfer function is compensated is obtained. The weighted information symbol 6 is obtained by multiplying the temporary information symbol 5 by the square of the transfer function 4. The weighted information symbols 6 are the received data symbols 3
Is multiplied by the complex conjugate of the transfer function 4. The weighted information symbol 6 is compensated for the phase depending on the signal point position in the complex signal space, the compensation values are averaged within one slot, and the desired received wave power is obtained as the square of the distance of this average value.

Thus, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is calculated as described above. A desired reception wave power measuring step is obtained in which the desired reception wave power is averaged in the interval of pilot signal intervals and the square of the absolute value of the average value is used as the reception desired wave power.

FIG. 4 is a diagram showing the received interference wave power measuring method described in claims 1 and 5 in a complex signal space. Received data symbol 7 and transfer function 8
Corresponds to the received data symbol 3 and the transfer function 4 in FIG. The estimated signal point 9 is obtained by examining the quadrant on the complex signal space in which the weighted information symbols in FIG. 3 exist. By dividing the received data symbol 7 by the estimated signal point 9, the transfer function 10 including the interference component is obtained.

Since the estimated signal point 9 exists on the unit circle, the value obtained by rotating the received data symbol 7 about the center of the unit circle becomes the transfer function 10 including the interference component. The received interference wave 11 is obtained as the difference between the transfer function 8 and the transfer function 10 including the interference component, and the square of the distance of the received interference wave 11 is 1
The received interference wave power can be obtained by averaging in the slot.

Thus, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal is obtained from the multiplication result. A point is determined, a fading envelope including an interference component is calculated using the received data symbol and the determination value, and the calculated value and the fading by the interpolation are calculated.
A received interference wave in which a difference from the envelope is calculated, the square of the difference is integrated in a pilot signal interval section, the integrated value is averaged over a plurality of pilot interval sections, and the average value is used as received interference wave power. A power measurement step is obtained.

FIG. 5 shows the received interference wave power measurement method described in claim 2, claim 3, claim 6 and claim 7 in a complex signal space. Transfer function 1 including received data symbol 12, estimated signal point 13 and interference component
4 corresponds to the received data symbol 7, the estimated signal point 9 and the transfer function 10 including the interference component in FIG. Transfer function 14 including interference component and average value 1 of the transfer function 14
The received interference wave 16 is the difference from the difference 5.

However, in the case of claims 2 and 3,
The square of the distance of the received interference wave 16 is integrated within one slot,
The received interference wave power can be obtained by averaging the integrated values over a plurality of slots. In the sixth and seventh aspects, the received interference wave power is obtained by integrating the square of the distance of the received interference wave 16 in the pilot and averaging the integrated values over a plurality of slots.

Thus, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal is obtained from the multiplication result. A point is determined, a fading envelope including an interference component is calculated using the received data symbol and the determination value, an average value of the received data symbols is calculated over the interval of the pilot signal interval, and the fading
A difference between the envelope and the average value is calculated, the square of the difference is integrated in a pilot signal interval section, the integrated value is averaged over a plurality of pilot interval sections, and the average value is set as a received interference wave power. The received interference wave power measuring step is obtained.

Similarly, in the complex signal space, the ratio of the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is obtained. A signal point is determined, a fading envelope including an interference component is calculated using the received data symbol and the determination value, an average value of the received data symbols is calculated over the interval of the pilot signal, and the fading envelope and the average are calculated. The difference between the received value and the square of the difference is integrated only in the pilot signal section, the integrated value is averaged over a plurality of pilot interval sections, and the average value is used as the received interference wave power. A wave power measurement step is obtained.

FIG. 6 illustrates the received interference wave power measuring method described in claims 4 and 8 in a complex signal space. Received data symbol 17, transfer function 18,
The information symbol 19 and the weighted information symbol 20 correspond to the received data symbol 3, the transfer function 4, the information symbol 5, and the weighted information symbol 6 in FIG. The average value 21 of the weighted information symbols is obtained by compensating the phase of the weighted information symbols 6 according to the signal point position on the complex signal space and averaging the compensation values within one slot. The difference between the weighted information symbol 20 and its average value 21 is defined as a reception interference wave 22.

Thus, in the complex signal space, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is piloted. Averaging in the signal interval section, calculating the difference between the average value and the multiplication result, integrating the square of the difference in the pilot signal interval section, and averaging the integrated value over a plurality of pilot interval sections. Then, a received interference wave power measuring step using the average value as the received interference wave power is obtained.

FIG. 7 is a block diagram for implementing the desired received wave power measuring method described in claims 1 to 4.

The baseband received signal 23 is input to the pilot signal detector 24. The transfer function estimation unit 25 uses the detected pilot signal to estimate the transfer function corresponding to the pilot signal. The interpolation interpolator 26 performs linear interpolation on the transfer function obtained from the pilot signals at both ends of the information symbol to obtain the transfer function corresponding to the information symbol. The averaging unit 27 averages the transfer function over one slot, and then the power calculating unit 28 calculates the power of the average value. The power calculation result is output as the desired reception wave power 29.

FIG. 8 is a block diagram for implementing the desired reception wave power measurement method described in claims 5 to 8.

The baseband received signal 30, the pilot signal detection unit 31, the transfer function estimation unit 32, the averaging unit 29 and the power calculation unit 36 are respectively the baseband received signal 23, the pilot signal detection unit 24 and the transfer function of FIG. It has the same configuration as the estimation unit 25, the averaging unit 27, and the power calculation unit 28.

The baseband received signal 30 is input to the pilot signal detector 31 and the weighting multiplier 34. The output of the transfer function estimator 32 is input to the weighting multiplier 34 after being complex-conjugated by the phase inverter 33.
After the averaging unit 35 averages the output of the multiplier 34 over one slot, the power calculating unit 36 calculates the power of the average value. The power calculation result is output as the desired reception wave power 37.

FIG. 9 is a block diagram for carrying out the received interference wave power measuring method described in claims 1 and 5.

The multiplier output is the same as the output from the weighting multiplier in FIG. 8, and the interpolation interpolation output 42 is shown in FIG.
Is the same as the output from the interpolation interpolator 26 in.

The baseband received signal 38 is input to the transfer function estimation divider 41, and the multiplier output is the signal point determination unit 4
Enter 0. In the signal point determination unit 40, the multiplier output 39
Determines the signal points of information symbols by examining the quadrants existing in the complex signal space. The transfer function estimating divider 41 outputs the ratio between the baseband received signal 38 and the signal point. The differencer 43 outputs the difference between the ratio and the interpolation output 42. After the power of the difference is calculated in the power calculator 44, the averager 45 averages the power over one slot. The average value is the received interference wave power 4
It is output as 6.

FIG. 10 shows claims 2, 3, and 6.
FIG. 8 is a block diagram for implementing the received interference power measurement method described in claim 7.

Baseband received signal 47, multiplier output 4
8, the signal point determination unit 49, the transfer function calculation divider 50, the difference unit 52, the power calculation unit 53, and the averaging unit 54 are the baseband received signal 38 and the signal point determination unit 4 of FIG. 9, respectively.
0, transfer function calculation divider 41, difference unit 43, power calculation unit 44, and averaging unit 45.

The baseband received signal 47 is input to the transfer function calculating divider 50. In the averaging unit 51, claim 2
And in the case of claim 6, the average value over the slot section of the transfer function is calculated, and in the case of claim 3 and claim 7, the average value over the pilot section of the transfer function is calculated.

The differencer 52 outputs the difference between the average value and the output of the transfer function calculating divider 50. The power calculator 53 calculates and outputs the difference power. In the case of claims 2 and 6, the averaging unit 54 averages the power over one slot, and in the cases of claims 3 and 7, the averaging unit 54 averages the power over the pilot section. The average value is output as the received interference wave power 55.

FIG. 11 is a block diagram for implementing the received interference wave power measurement method described in claims 4 and 8.

Baseband received signal 56, pilot detecting section 57, transfer function estimating section 58, phase inverter 59, weighting multiplier 60, averaging section 61, and power calculating section 6
4 is a baseband received signal 30, a pilot detection unit 31, a transfer function estimation unit 32, a phase inverter 33 in FIG.
It has the same configuration as the weighting multiplier 34, the averaging unit 35, and the power calculation unit 36.

The baseband received signal 56 is input to the pilot signal detector 57 and the weighting multiplier 60. The output of the transfer function estimator 58 is input to the weighting multiplier 60 after being complex-conjugated by the phase inverter 59.
The output from the multiplier 60 is input to the averaging unit 61 and the buffer 62. The buffer 62 is used to store the multiplier output for one slot while averaging the multiplier output. The averaging unit 61 averages the outputs of the multipliers over one slot, calculates the difference between the buffer output and the average value, and the power calculating unit 64 calculates the power of the difference value. The power calculation result is output as the received interference wave power 63.

FIG. 12 shows the reception SI described in claim 9.
It is a block diagram of an R measuring device.

From the pilot detection unit 67 to the desired reception wave power 72 corresponds to the pilot detection unit 24 to the desired reception wave power 29 in FIG. 7, and from the signal point determination unit 75 to the reception interference wave power 80 in FIG. It corresponds to the received interference wave power 46 from the determination unit 40. The phase inverter 73 and the weighting multiplier 74 correspond to the phase inverter 33 and the weighting multiplier 34 in FIG.

The synchronization detecting section 83 generates a synchronization signal from the baseband received signal 66 and supplies the synchronization signal to a portion requiring the synchronization signal. The SIR calculation divider 81 calculates the ratio between the received desired wave power 72 and the received interference wave power 80. The ratio is output as the reception SIR 82.

[0067]

EXAMPLE FIG. 13 shows an example of a transmission power control apparatus to which the present invention is applied (corresponding to claim 17).

In FIG. 13, reference numeral 84 is an antenna, 85 is a transmission / reception separating unit, 86 is a receiving radio unit, 87 is a despreading unit, and 88.
Is an interpolation synchronous detection unit, 89 is a phase inverter, 90 is a weighting multiplier, 91 is a signal point determination unit, 92 is a transfer function calculation (division) unit, 93 is a synchronization detection unit, and 94 is a Viterbi decoding unit. 95 is an averaging unit, 96 is a difference unit, 97 is a power calculation unit, 98 is an averaging unit, 99 is a power calculation unit, and 100 is SI.
R measurement unit, 101 is a transmission power control bit determination unit, 102
Is a signal generator, 103 is an encoder, 104 is a modulator, 1
Reference numeral 05 is a spreading unit, 106 is a transmission wireless unit, 107 is a transmission power control bit extraction unit, and 108 is a transmission power control unit.

In FIG. 13, the interpolation interpolation synchronous detection unit 88
Corresponds to the pilot detector 67, the transfer function estimator 68, and the interpolation interpolator 69 in FIG.

The received SIR measurement is as described in FIG.

Transmission power control bit determining section 101 compares the measured reception SIR with a preset target SIR. The transmission power control bit is set so as to decrease the transmission power when the reception SIR is higher than the target SIR, and to increase the transmission power when the reception SIR is lower than the target SIR.

In the receiving station, the transmission power control bit extraction unit 107 extracts the transmission power control bit from the baseband signal after the interpolated synchronous detection, and the transmission power control unit 108 according to the value of the transmission power control bit. To increase or decrease the transmission power.

[0073]

As described above, according to the present invention, C
It is possible to measure the received SIR more accurately in the DMA transmission power control device.

[Brief description of drawings]

FIG. 1 is a diagram showing a signal configuration example in the case of performing interpolation interpolation synchronous detection.

2] Claims 1 to 4 described in a complex signal space.
FIG. 6 is a diagram showing a method for measuring the power of a desired wave of reception.

3] Claims 5 to 8 described in a complex signal space.
FIG. 6 is a diagram showing a method for measuring the power of a desired wave of reception.

FIG. 4 is a diagram showing a received interference wave power measurement method according to claims 1 and 5 described in a complex signal space.

FIG. 5 is a diagram showing a received interference wave power measuring method according to claim 2, claim 3, claim 6, and claim 7 described in a complex signal space.

FIG. 6 is a diagram showing a received interference wave power measurement method according to claims 4 and 8 described in a complex signal space.

FIG. 7 is a block diagram for carrying out the desired wave power measuring method according to any one of claims 1 to 4.

FIG. 8 is a block diagram for implementing the desired reception wave power measurement method according to any one of claims 5 to 8.

FIG. 9 is a block diagram for carrying out the received interference wave power measurement method according to claims 1 and 5.

FIG. 10 is a block diagram for implementing the received interference wave power measurement method according to claim 2, claim 3, claim 6, and claim 7;

FIG. 11 is a block diagram for carrying out the received interference wave power measurement method according to claims 4 and 8;

FIG. 12 is a block diagram of a desired reception wave power measuring apparatus corresponding to claim 1.

FIG. 13 is a block diagram showing an embodiment of a transmission power control device corresponding to claim 17;

[Explanation of symbols]

1 Transfer function by interpolation 2 Received wave power 3 Received data symbol 4 Transfer function by interpolation 5 Temporary information symbol that compensates the transfer function 6 Weighted information symbols 7 Received data symbol 8 Transfer function by interpolation 9 Estimated signal points 10 Transfer function including interference component 11 Received interference wave 12 Received data symbols 13 estimated signal points 14 Transfer function by interpolation 15 Transfer function including interference component 16 Received interference wave 17 Received data symbol 18 Transfer function by interpolation 19 Temporary information symbol with compensation of transfer function 20 weighted information symbols 21 Average value of weighted information symbols 22 Received interference wave 23 Baseband received signal 24 Pilot signal detector 25 Transfer Function Estimator 26 Interpolator 27 Averaging unit 28 Power calculator 29 Desired wave power 30 baseband received signal 31 Pilot signal detector 32 Transfer Function Estimator 33 Phase Inverter 34 Weighting Multiplier 35 Averaging unit 36 Power calculator 37 Received signal power 38 Baseband received signal 39 Weighting multiplier output 40 Signal point determination unit 41 Transfer Function Estimation Divider 42 Transfer function estimation output 43 Differentiator 44 Power calculator 45 Averaging unit 46 Received interference wave power 47 Baseband received signal 48 Weighting multiplier output 49 Signal point determination unit 50 Transfer function calculation divider 51 Averaging unit 52 Differentiator 53 Power calculator 54 Averaging unit 55 Received interference power 56 Baseband received signal 57 Pilot detector 58 Transfer Function Estimator 59 Phase Inverter 60 Weighting Multiplier 61 Averaging unit 62 Multiplier output storage buffer 63 integrator 64 Power calculator 65 Received interference wave power 66 Baseband received signal 67 Pilot detector 68 Transfer Function Estimator 69 Interpolator 70 Averaging unit 71 Power calculator 72 Desired wave power 73 Phase Inverter 74 Weighting Multiplier 75 Signal point determination unit 76 Transfer function calculation divider 77 Difference device 78 Power calculator 79 Averaging unit 80 Received interference wave power 81 SIR calculation divider 82 Receive SIR 83 Sync detector 84 antenna 85 Transmission / Reception Separation Unit 86 Reception radio section 87 Despreading section 88 interpolation interpolation synchronous detection unit 89 Phase Inverter 90 Weighting Multiplier 91 Signal point determination unit 92 Transfer function calculation (division) section 93 Sync Detector 94 Viterbi Decoding Unit 95 Averaging unit 96 differentiator 97 Power calculator 98 Averaging unit 99 Power calculator 100 SIR measurement unit 101 transmission power control bit determination unit 102 signal generator 103 encoding unit 104 Modulator 105 Diffuser 106 transmission wireless unit 107 transmission power control bit extraction unit 108 transmission power control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mamoru Sawahashi 2-10-1 Toranomon, Minato-ku, Tokyo NTT Mobile Communications Network Co., Ltd. (56) Reference JP-A-8-32513 (JP , A) JP 8-32514 (JP, A) JP 5-37490 (JP, A) JP 7-183928 (JP, A) JP 8-65184 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04B 17/00 G01R 29/00-29/08 H04B ⁷ /24-7/26

Claims (24)

(57) [Claims] 1. An interpolator in a baseband complex signal space using a coherent detector that coherently detects a signal in which a known pilot signal is inserted into an information signal by a transmitter at predetermined intervals. Calculating a power value of a fading envelope obtained by interpolation, averaging the power value in a section of a predetermined pilot signal interval, and measuring a received desired wave power using the average value as a received desired wave power, a complex signal space In the above, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, the signal point is determined from the multiplication result, and the received data is A fading envelope including an interference component is calculated using the symbol and the judgment value, and the calculated value and the fading envelope by the interpolation are calculated. A difference between the difference and the singing envelope is calculated, the square of the difference is integrated in a pilot signal interval section, the integrated value is averaged over a plurality of pilot interval sections, and the average value is used as reception interference wave power. An interference wave power measurement step and a calculation step of calculating a ratio of the desired reception wave power and the reception interference wave power are provided, and the calculated ratio is SIR.
(Desired signal-to-interference signal power ratio). 2. An interpolator in a baseband complex signal space using a coherent detection device for coherently detecting at the reception side a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmission side. Calculating a power value of a fading envelope obtained by interpolation, averaging the power value in a section of a predetermined pilot signal interval, and measuring a received desired wave power using the average value as a received desired wave power, a complex signal space In the above, the ratio between the received data symbol and the fading envelope obtained by the interpolation is calculated, the ratio is multiplied by the square of the fading envelope, the signal point is determined from the multiplication result, and the received data is A fading envelope including an interference component is calculated using the symbol and the judgment value, and the fading envelope is calculated in the interval of the pilot signal interval. Then, the average value of the received data symbols is calculated, the difference between the fading envelope and the average value is calculated, and the square of the difference is integrated in the interval of the pilot signal interval, and the integrated value is divided into a plurality of pilot intervals. The received interference wave power measuring step of averaging over the section of, and using the average value as the received interference wave power, and a calculation step of calculating the ratio between the desired reception wave power and the reception interference wave power, Ratio to SIR
(Desired signal-to-interference signal power ratio). 3. An interpolator in a baseband complex signal space using a coherent detection device for coherently detecting at the reception side a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmission side. Calculating a power value of a fading envelope obtained by interpolation, averaging the power value in a section of a predetermined pilot signal interval, and measuring a received desired wave power using the average value as a received desired wave power, a complex signal space In the above, the ratio between the received data symbol and the fading envelope obtained by interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal point is determined from the multiplication result, and the received data symbol Then, a fading envelope including an interference component is calculated using the judgment value and The average value of the received data symbols, the difference between the fading envelope and the average value, the square of the difference is integrated only in the pilot signal section, and the integrated value is divided into a plurality of pilot interval sections. The received interference wave power measuring step of averaging over the average value as the received interference wave power, and a calculation step of calculating the ratio of the desired reception wave power and the received interference wave power, the calculated ratio The SIR
(Desired signal-to-interference signal power ratio). 4. A synchronous detection device for synchronously detecting, on the receiving side, a signal in which a known pilot signal is inserted into an information signal by a transmitting side at a predetermined interval, by interpolation in a complex signal space of a base band. Calculate the power value of the obtained fading envelope, average the power values in the interval of a predetermined pilot signal interval, and measure the received desired wave power using the average value as the desired received wave power, and in the complex signal space , Calculating the ratio of the received data symbols to the fading envelope obtained by interpolation, multiplying the ratio by the square of the fading envelope, averaging the multiplication results in the interval of pilot signal intervals, and averaging Calculate the difference between the value and the multiplication result,
A received interference wave power measuring step of integrating the square of the difference in a pilot signal interval section, averaging the integrated value over a plurality of pilot interval sections, and using the average value as received interference wave power; A step of calculating a ratio between the wave power and the received interference wave power, and calculating the calculated ratio by SIR.
(Desired signal-to-interference signal power ratio). 5. In a complex signal space, a ratio between a received data symbol and a fading envelope obtained by interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is obtained. A desired received wave power measuring step of averaging in the interval of pilot signal intervals, the desired desired wave power being the square of the absolute value of the average value, and determining a signal point from the multiplication result in a complex signal space, A fading envelope including an interference component is calculated using the received data symbol and the decision value, a difference between the calculated value and a fading envelope by the interpolation is calculated, and the square of the difference is calculated as a pilot signal interval. The received interference is obtained by integrating the integrated values over a period of a plurality of pilot intervals and using the average value as the received interference wave power. SIR and power measurement step, a calculating step of calculating a ratio of the received interference wave power and the received desired wave power, the calculated ratio
(Desired signal-to-interference signal power ratio). 6. A ratio between a received data symbol and a fading envelope obtained by interpolation is calculated in a complex signal space, and the fading
A received desired wave power measuring step of multiplying the square of the envelope, averaging the multiplication results in the interval of the pilot signal interval, and taking the square of the absolute value of the average value as the desired received wave power; In, a signal point is determined from the multiplication result, a fading envelope including an interference component is calculated using the received data symbol and the determination value, and an average value of the received data symbols is calculated over the interval of the pilot signal interval. , Calculating a difference between the fading envelope and the average value, integrating the square of the difference in a pilot signal interval section, averaging the integrated value over a plurality of pilot interval sections, and receiving the average value The step of measuring the received interference wave power as the interference wave power, and the calculation step of calculating the ratio between the desired reception wave power and the received interference wave power. And a flop, SIR the calculated ratio
(Desired signal-to-interference signal power ratio). 7. A ratio between a received data symbol and a fading envelope obtained by interpolation is calculated in a complex signal space, and the fading
A received desired wave power measuring step of multiplying the square of the envelope, averaging the multiplication results in the interval of the pilot signal interval, and taking the square of the absolute value of the average value as the desired received wave power; In, the ratio between the received data symbol and the fading envelope obtained by interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the signal point is determined from the multiplication result, and the received data symbol is A fading envelope including an interference component is calculated using the determination value, an average value of received data symbols is calculated over the interval of the pilot signal, a difference between the fading envelope and the average value is calculated, and the difference is calculated. Squared over only the pilot signal section, and the integrated value is distributed over a plurality of pilot interval sections. And averaging the received interference wave power with the average value as the received interference wave power, and a calculation step of calculating the ratio of the desired reception wave power and the reception interference wave power, the calculated ratio The SIR
(Desired signal-to-interference signal power ratio). 8. A ratio between a received data symbol and a fading envelope obtained by interpolation is calculated in a complex signal space, and the fading
A received desired wave power measuring step of multiplying the square of the envelope, averaging the multiplication results in the interval of the pilot signal interval, and taking the square of the absolute value of the average value as the desired received wave power; In, the ratio of the received data symbol and the fading envelope obtained by interpolation is calculated, the ratio is multiplied by the square of the fading envelope, and the multiplication result is averaged in the interval of the pilot signal interval. Calculate the difference between the average value and the multiplication result,
A received interference wave power measuring step of integrating the square of the difference in a pilot signal interval section, averaging the integrated value over a plurality of pilot interval sections, and using the average value as received interference wave power; A step of calculating a ratio between the wave power and the received interference wave power, and calculating the calculated ratio by SIR.
(Desired signal-to-interference signal power ratio). 9. A baseband complex signal space is interpolated using a coherent detection device that coherently detects at the reception side a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmission side. Measuring means for calculating the power value of the fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and measuring the desired power of the desired wave using the average value as the desired power of the desired wave. A circuit, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by the square of the fading envelope, and a result of the multiplication. And a fading envelope including an interference component using the received data symbol and the judgment value. Means for calculating a flop, means for calculating a difference between the fading envelope by between said interpolation and the computed value,
A received interference wave power measurement including means for integrating the square of the difference in a pilot signal interval section, and means for averaging the integrated value over a plurality of pilot interval sections, and the average value being the received interference wave power. A receiving S, comprising a circuit and an arithmetic circuit for calculating a ratio between the desired received wave power and the received interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device. 10. An interpolator in a baseband complex signal space using a coherent detection device for coherently detecting at the receiving side a signal into which a known pilot signal is inserted into an information signal at a predetermined interval by the transmitting side. Measuring means for calculating the power value of the fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and measuring the desired power of the desired wave using the average value as the desired power of the desired wave. A circuit, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by the square of the fading envelope, and a result of the multiplication. Means for determining a signal point from the received data symbol and a fading envelope including an interference component using the received data symbol and the determination value. Means for calculating a-loop, means for calculating an average value of the received data symbols over intervals of the pilot signal interval,
A means for calculating a difference between the fading envelope and the average value, means for integrating the square of the difference in a pilot signal interval section, and means for averaging the integrated value over a plurality of pilot interval sections. , A reception interference wave power measurement circuit that uses the average value as the reception interference wave power, and an arithmetic circuit that calculates a ratio of the reception desired wave power and the reception interference wave power, and the calculated ratio is calculated by SIR (desired signal). Signal to interference signal power ratio)
IR measuring device. 11. Interpolating in a baseband complex signal space by using a coherent detection device for coherently detecting at the receiving side a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by the transmitting side. Measuring means for calculating the power value of the fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and measuring the desired power of the desired wave using the average value as the desired power of the desired wave. A circuit, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by the square of the fading envelope, and a result of the multiplication. Means for determining a signal point from the received signal, and a fading envelope including an interference component using the received data symbol and the determination value. For calculating the average value of the received data symbols over the section of the pilot signal, a means for calculating the difference between the fading envelope and the average value, and a square of the difference for the pilot signal. Means for integrating only in the section of, the means for averaging the integrated value over the interval of a plurality of pilot intervals, the received interference wave power measurement circuit using the average value as the received interference wave power, the desired received wave power A reception circuit, comprising: an arithmetic circuit for calculating a ratio with the received interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device. 12. An interpolator in a baseband complex signal space using a coherent detection device for coherently detecting, at a receiver side, a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitter side. Measuring means for calculating the power value of the fading envelope obtained by interpolation, and means for averaging the power value in a predetermined pilot signal interval section, and measuring the desired power of the desired wave using the average value as the desired power of the desired wave. A circuit, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by the square of the fading envelope, and a multiplication result In the interval of the pilot signal interval, means for calculating the difference between the average value and the multiplication result, and the square of the difference. A means for integrating the pilot signal intervals, a means for averaging the integrated values over a plurality of pilot interval intervals, a received interference wave power measurement circuit that uses the average value as received interference wave power, and the desired reception wave A reception circuit, comprising: an arithmetic circuit for calculating a ratio between electric power and the received interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device. 13. A means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by a square of the fading envelope, and the multiplication. A means for averaging the results in the interval of the pilot signal interval, a desired reception wave power measuring circuit that uses the square of the absolute value of the average value as the desired reception wave power, and a received data symbol in a complex signal space. Means for calculating a ratio to a fading envelope obtained by interpolation, means for multiplying the ratio by the square of the fading envelope, means for determining a signal point from the multiplication result, and the received data symbol And means for calculating a fading envelope including an interference component using the judgment value, the calculation value and the And means for calculating the difference between the fading envelope by between interpolation,
A received interference wave power measurement including means for integrating the square of the difference in a pilot signal interval section, and means for averaging the integrated value over a plurality of pilot interval sections, and the average value being the received interference wave power. A reception S, which comprises a circuit and an arithmetic circuit for calculating a ratio between the desired reception wave power and the reception interference wave power, wherein the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device. 14. A means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by the square of the fading envelope, and the multiplication. A means for averaging the results in the interval of the pilot signal interval, a received desired wave power measuring circuit that uses the square of the absolute value of the average value as the received desired wave power, and a received data symbol in a complex signal space. Means for calculating a ratio to a fading envelope obtained by interpolation, means for multiplying the ratio by the square of the fading envelope, means for determining a signal point from the multiplication result, and the received data symbol And means for calculating a fading envelope including an interference component using the judgment value, and the pilot signal. Means for calculating a mean value of the received data symbols over period interval,
A means for calculating a difference between the fading envelope and the average value, means for integrating the square of the difference in a pilot signal interval section, and means for averaging the integrated value over a plurality of pilot interval sections. , A reception interference wave power measurement circuit that uses the average value as the reception interference wave power, and an arithmetic circuit that calculates a ratio of the reception desired wave power and the reception interference wave power, and the calculated ratio is calculated by SIR (desired signal). Signal to interference signal power ratio)
IR measuring device. 15. A means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by a square of the fading envelope, and the multiplication. Means for averaging the results in the interval of the pilot signal interval, a desired received wave power measuring circuit for taking the square of the absolute value of the average as the desired desired wave power, and a received received data symbol in a complex signal space. And means for calculating the ratio of the fading envelope obtained by interpolation and the fading
Means for multiplying the square of the envelope, means for determining a signal point from the multiplication result, means for calculating a fading envelope including an interference component using the received data symbol and the determination value, and over the interval of the pilot signal Means for calculating the average value of the received data symbols, means for calculating the difference between the fading envelope and the average value, means for integrating the square of the difference only in the pilot signal section, and the integrated value A received interference wave power measuring circuit having means for averaging over a plurality of pilot intervals, the average value being the received interference wave power, and an arithmetic circuit for calculating the ratio between the desired received wave power and the received interference wave power. And the calculated ratio is SIR (desired signal to interference signal power ratio).
IR measuring device. 16. A means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, a means for multiplying the ratio by a square of the fading envelope, and the multiplication. A means for averaging the results in the interval of the pilot signal interval, a received desired wave power measuring circuit that uses the square of the absolute value of the average value as the received desired wave power, and a received data symbol in a complex signal space. Means for calculating a ratio with a fading envelope obtained by interpolation, means for multiplying the ratio by the square of the fading envelope, means for averaging the multiplication results in a pilot signal interval section, Means for calculating the difference between the average value and the multiplication result, and means for integrating the square of the difference in the interval of the pilot signal interval A received interference wave power measuring circuit having means for averaging the integrated value over a plurality of intervals of pilot intervals, wherein the average value is the received interference wave power, and a ratio of the desired received wave power and the received interference wave power. And a calculation circuit for calculating SIR (SIR (desired signal to interference signal power ratio)).
IR measuring device. 17. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 1 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 18. Means for comparing an SIR measurement result based on the received SIR measurement method according to claim 2 with a preset SIR target value; and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 19. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 3 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 20. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 4 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 21. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 5 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 22. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 6 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, a means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and a means for controlling the transmission power of the own station according to the demodulated transmission power control signal And a transmission power control device. 23. A means for comparing an SIR measurement result based on the reception SIR measurement method according to claim 7 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and means for controlling the transmission power of the own station according to the demodulated transmission power control signal. A characteristic transmission power control device. 24. A means for comparing an SIR measurement result based on the received SIR measurement method according to claim 8 with a preset SIR target value, and transmission power control for an opposite station based on the comparison result. A means for transmitting a signal, means for receiving and demodulating the transmission power control signal transmitted from the opposite station, and means for controlling the transmission power of the own station according to the demodulated transmission power control signal. A characteristic transmission power control device.