JPH1013364A - Reception sir measurement method, device and transmission power controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the reception SIR measurement method, the device and the transmission power controller in which reception (SIR) desired signal versus interference signal power ratio) measurement accuracy is improved. SOLUTION: Either a mean power of a propagation path transfer function estimated by a reception pilot signal or a power at a signal point estimated from reception data symbol and the transfer function is used as a reception desired power 72, a power of an error between fading estimated from a reception data symbol and the transfer function, or a power of an error between a slot block mean value of the reception data symbol and the fading or a power of the error between the pilot block mean value of the reception data symbol and the fading is used as a reception interference power 80 and a ratio of the reception desired wave power to the reception interference wave power is outputted as an SIR 82.

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 and apparatus and a transmission power control apparatus when a CDMA (code division multiple access) system is used in mobile communication.

[0002]

2. Description of the Related Art In a CDMA system, since a plurality of users share the same frequency band inside and outside a cell in which the CDMA system is located, a signal of another user becomes an interference component, which deteriorates the communication quality of its own channel. Become. For example, when a user 1 near the base station and a user 2 far from the base station simultaneously communicate, the received power from the user 1 at the base station is larger than the received power from the user 2. For this reason, the communication quality of the user 2 is significantly degraded due to the interference of the user 1, that is, a distance problem occurs.

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

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

[0005]

In the conventional SIR measurement technique, the power of the desired signal is measured using the received data symbol determined by interpolation, so that the fading causes the envelope of the received signal to drop. The difference between the actually measured value of the received data symbol and the interpolated interpolation value becomes large, and there is a possibility that the measurement accuracy of the desired reception wave power is deteriorated.

Further, when the entire interval between the predetermined pilot signal intervals is used as the integration section of the fading envelope power, there is a possibility that the measurement accuracy of the received interference wave power may be deteriorated due to a signal point determination error of the received signal. .

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a reception SIR measurement method, device, and transmission power control device that improve reception SIR measurement accuracy.

[0008]

In order to achieve the above object, the invention according to claim 1 is directed to a method in which a signal in which a pilot signal known by a transmitting side is inserted into an information signal at predetermined intervals is received. Using a synchronous detection device that performs synchronous detection in the above, the power value of the fading envelope obtained by interpolation in the baseband complex signal space is calculated, and the power value is averaged in a section of a predetermined pilot signal interval. A desired signal power measuring step of setting the average value to a desired signal power, and calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and calculating the ratio to the ratio. A signal point is determined based on the result of the multiplication by multiplying the square of the fading envelope, and a signal including an interference component is determined using the received data symbol and the determination value. The Jingu envelope is calculated,
Calculating a difference between the calculated value and the fading envelope by the interpolation, integrating the square of the difference in a section of a pilot signal interval, averaging the integrated value over a plurality of pilot interval sections, Measuring the received interference wave power as a value of the received interference wave power, and calculating the ratio of the desired received wave power to the received interference wave power, and calculating the calculated ratio as SIR (desired signal versus interference). Signal power ratio).

According to a second aspect of the present invention, a baseband complex signal is detected using a synchronous detection device that synchronously detects at a reception side a signal in which a pilot signal known by a transmission side is inserted into an information signal at predetermined intervals. In the signal space, calculate the power value of the fading envelope obtained by interpolation, average the power value in a section of a predetermined pilot signal interval, and set the average to the desired desired signal power. Measuring a ratio of a received data symbol to a fading envelope obtained by interpolation in a complex signal space, multiplying the ratio by the square of the fading envelope, and calculating a signal point from the result of the multiplication. And calculating a fading envelope including an interference component using the received data symbol and the determination 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
The power is integrated in a section of a pilot signal interval, the integrated value is averaged over a plurality of sections of the pilot interval, and a reception interference wave power measuring step in which the average value is a reception interference wave power; and Calculating a ratio to the received interference wave power, and calculating the calculated ratio as S
A receiving SIR measuring method characterized by IR (desired signal to interference signal power ratio) ".

According to a third aspect of the present invention, there is provided a baseband complex signal detecting apparatus which performs synchronous detection on a reception side of a signal in which a pilot signal known by a transmission side is inserted into an information signal at predetermined intervals. In the signal space, calculate the power value of the fading envelope obtained by interpolation, average the power value in a section of a predetermined pilot signal interval, and set the average to the desired desired signal power. Measuring a ratio of a received data symbol to a fading envelope obtained by interpolation in a complex signal space, multiplying the ratio by the square of the fading envelope, and calculating a signal point from the result of the multiplication. Is determined, and a fading envelope including an interference component is calculated using the received data symbol and the determination value. Calculate the average value of the received data symbols over the signal interval, calculate the difference between the fading envelope and the average value, integrate the square of the difference only in the pilot signal interval, and Averaging over the interval of the pilot interval, a receiving interference power measuring step of setting the average value to the receiving interference power, and a calculating step of calculating a ratio between the desired reception power and the receiving interference power, The calculated ratio is SI
R (desired signal to interference signal power ratio) ".

According to a fourth aspect of the present invention, there is provided a synchronous detection apparatus for synchronously detecting at a receiving side a signal in which a pilot signal known by a transmitting side is inserted into an information signal at a predetermined interval. Calculating a fading envelope power value obtained by interpolation, averaging the power value in a section of a predetermined pilot signal interval, and measuring the average value as a desired desired signal power; And calculating the ratio between the received data symbol and the fading envelope obtained by interpolation in the complex signal space, multiplying the ratio by the square of the fading envelope, and calculating the multiplication result 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. Averaging the integrated value over a plurality of intervals of the pilot interval, measuring a received interference wave power using the average as a received interference wave power, and calculating a ratio between the desired reception wave power and the received interference wave power And a step of making the calculated ratio an SIR (desired signal to interference signal power ratio). "
I will provide a.

According to a fifth aspect of the present invention, there is provided a method for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and multiplying the ratio by the square of the fading envelope. Averaging the multiplication results in the interval of the pilot signal interval,
A step of measuring a desired desired wave power using the square of the absolute value of the average value as a desired desired wave power; and determining a signal point from the result of the multiplication in a complex signal space. Is used to calculate a fading envelope including an interference component, calculate a difference between the calculated value and the fading envelope by the interpolation, and integrate the square of the difference in a section of a pilot signal interval. Is averaged over intervals of multiple pilot intervals,
A receiving interference wave power measuring step of setting the average value to a receiving interference wave power; and a calculating step of calculating a ratio of the desired reception wave power to the reception interference wave power, and calculating the calculated ratio as an SIR (a desired signal). (Interference signal power ratio).

According to a sixth aspect of the present invention, there is provided a method for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and multiplying the ratio by the square of the fading envelope. Averaging the multiplication results in the interval of the pilot signal interval,
A step of measuring a desired desired wave power using the square of the absolute value of the average value as a desired desired wave power; and determining a signal point from the result of the multiplication in a complex signal space. Calculate a fading envelope including an interference component using the average of received data symbols 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, averaging the integrated value over a plurality of pilot intervals, and calculating the average And a calculating step of calculating a ratio between the desired received wave power and the received interference wave power, and calculating the calculated ratio as SIR (desired signal to interference signal power ratio). A method for measuring a received SIR ”.

According to a seventh aspect of the present invention, there is provided a method for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and multiplying the ratio by the square of the fading envelope. Averaging the multiplication results in the interval of the pilot signal interval,
A step of measuring a desired desired wave power with the absolute value of the average value as a desired desired wave power; and determining a signal point from a received data symbol in a complex signal space, and using a received data symbol and the determined value as an interference component. Fading including
Calculating the envelope, calculating the average of the received data symbols over the section of the pilot signal, calculating the difference between the fading envelope and the average, and integrating the square of the difference only in the section of the pilot signal. Averaging the integrated value over a plurality of intervals of the pilot interval, and measuring the interference power as the interference power, and calculating a ratio between the desired reception power and the reception interference power. Calculation step to perform,
The calculated ratio is referred to as SIR (desired signal to interference signal power ratio).
A method for measuring a received SIR ”.

According to an eighth aspect of the invention, there is provided a method for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and multiplying the ratio by the square of the fading envelope. Averaging the multiplication results in the interval of the pilot signal interval,
A step of measuring a power of a desired signal to be received which is the square of the absolute value of the average value, and calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space. , Multiplying the ratio by the square of the fading envelope, averaging the result of the multiplication in the interval of the pilot signal interval, calculating the difference between the average value and the result of the multiplication, and calculating the square of the difference as the pilot signal A receiving interference wave power measuring step of integrating over an interval of intervals, averaging the integrated value over a plurality of intervals of the pilot interval, and using the average value as a receiving interference wave power; A calculating step of calculating a ratio of the received SIR to a desired signal to interference signal power ratio (SIR).
Measurement method ”.

According to a ninth aspect of the present invention, a baseband complex signal is detected using a synchronous detector for synchronously detecting at a receiving side a signal in which a pilot signal known by a transmitting side is inserted into an information signal at predetermined intervals. Means for calculating a power value of a fading envelope obtained by interpolation in a signal space; and means for averaging the power value in a section of a predetermined pilot signal interval. 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 square of the fading envelope to the ratio. Means for multiplying, means for determining a signal point from the result of the multiplication, and an interference component using 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,
Means for averaging the integrated value over a section of a plurality of pilot intervals, a reception interference power measurement circuit that uses the average as reception interference power, and a ratio between the desired reception power and the reception interference power. And an arithmetic circuit for calculating
The calculated ratio is referred to as SIR (desired signal to interference signal power ratio).
A receiving SIR measuring device ".

According to a tenth aspect of the present invention, there is provided a baseband complex signal detecting apparatus that performs synchronous detection on a reception side of a signal in which a pilot signal known by a transmission side is inserted into an information signal at predetermined intervals. Means for calculating a power value of a fading envelope obtained by interpolation in a signal space; and means for averaging the power value in a section of a predetermined pilot signal interval. 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 square of the fading envelope to the ratio. Means for multiplying, a means for determining a signal point from the result of the multiplication, and an interference component using 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 And a means for integrating the integrated value over a plurality of pilot intervals, a reception interference power measurement circuit that uses the average as a reception interference power, A calculating circuit for calculating a ratio between the radio wave power and the received interference wave power, wherein the calculated ratio is defined as SIR (desired signal to interference signal power ratio).
Measurement device. "

According to an eleventh aspect of the present invention, there is provided a baseband complex signal detecting apparatus which performs synchronous detection on a reception side of a signal in which a pilot signal known by a transmission side is inserted into an information signal at predetermined intervals. Means for calculating a power value of a fading envelope obtained by interpolation in a signal space; and means for averaging the power value in a section of a predetermined pilot signal interval. 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 square of the fading envelope to the ratio. Multiplying means, means for determining a signal point from the result of the multiplication, and an interference component using a 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 section of the pilot signal, means for calculating a difference between the fading envelope and the average value, and a square of the difference. Means for integrating only in a section of a pilot signal, means for averaging the integrated value over sections of a plurality of pilot intervals, a reception interference power measuring circuit for setting the average to reception interference power, and A receiving SIR measuring apparatus, comprising: an arithmetic circuit for calculating a ratio between the power and the received interference wave power, wherein the calculated ratio is used as an SIR (desired signal to interference signal power ratio).

According to a twelfth aspect of the present invention, there is provided a baseband complex signal detecting apparatus which performs synchronous detection on a reception side of a signal in which a pilot signal known by a transmission side is inserted into an information signal at predetermined intervals. Means for calculating a power value of a fading envelope obtained by interpolation in a signal space; and means for averaging the power value in a section of a predetermined pilot signal interval. 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 square of the fading envelope to the ratio. Means for multiplying, means for averaging the result of the multiplication in the interval of the pilot signal interval, and calculating a difference between the average value and the result of the multiplication. Means, a means for integrating the square of the difference in a section of a pilot signal interval, and means for averaging the integrated value over a section of a plurality of pilot intervals, and a reception interference wave having the average value as reception interference wave power. A power measuring circuit, and an arithmetic circuit for calculating a ratio between the desired reception wave power and the reception interference wave power.
(A desired signal to interference signal power ratio). "

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

According to a fourteenth aspect of the present invention, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, wherein the ratio is the square of the fading envelope And a means for averaging the result of the multiplication in the section of the pilot signal interval, a circuit for measuring a desired desired wave power that takes the square of the absolute value of the average value as a desired desired wave power, and a complex signal space. Means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation;
Means for multiplying the square of the envelope, means for determining a signal point from the result of the multiplication, means for calculating a fading envelope including an interference component using the received data symbol and the determination value, Means for calculating an average value of received data symbols over an interval, means for calculating a difference between the fading envelope and the average value, means for integrating the square of the difference in an interval of a pilot signal interval, and Means for averaging a value over a plurality of intervals of pilot intervals, a circuit for measuring a received interference wave power that uses 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 an arithmetic circuit, and calculates the calculated ratio by SIR
(Received SIR measurement power ratio).

According to a fifteenth aspect of the present invention, there is provided an apparatus for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, wherein the ratio is the square of the fading envelope. And a means for averaging the result of the multiplication in the section of the pilot signal interval, a circuit for measuring a desired desired wave power that takes the square of the absolute value of the average value as a desired desired wave power, and a complex signal space. Means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation;
Means for multiplying the square of the envelope, means for determining a signal point from the result of the multiplication, means for calculating a fading envelope including an interference component using a received data symbol and the determination value, and 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 section of the pilot signal; Means for averaging over a plurality of pilot intervals, a reception interference power measurement circuit that sets the average value to reception interference power,
An arithmetic circuit for calculating a ratio between the desired reception wave power and the reception interference wave power, wherein the calculated ratio is defined as SIR (desired signal to interference signal power ratio).
IR measuring device ".

According to a sixteenth aspect of the present invention, a means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, wherein the ratio is the square of the fading envelope And a means for averaging the result of the multiplication in the section of the pilot signal interval, a circuit for measuring a desired desired wave power that takes the square of the absolute value of the average as a desired desired wave power, and a complex signal space. Means for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation;
Means for multiplying the square of the envelope, means for averaging the result of the multiplication in the interval of the pilot signal interval, means for calculating the difference between the average value and the result of the multiplication, and calculating the square of the difference as the pilot signal interval Means for integrating in a section, means for averaging the integrated value over a section of a plurality of pilot intervals, a reception interference wave power measurement circuit for setting the average value to reception interference wave power, A reception SIR measuring device, comprising: an arithmetic circuit for calculating a ratio with respect to the interference wave power, and using the calculated ratio as a SIR (desired signal to interference signal power ratio).

According to a seventeenth aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 1 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

According to an eighteenth aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 2 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

According to a nineteenth aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 3 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

[0027] According to a twentieth aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 4 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

According to a twenty-first aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 5 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

According to a twenty-second aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method described in claim 6 with a preset SIR target value, Means for transmitting a transmission power control signal to a 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 transmission power control device characterized by comprising:

According to a twenty-third aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method according to the seventh aspect with a preset SIR target value is provided based on the comparison result. Means for transmitting a transmission power control signal to a 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 transmission power control device.

According to a twenty-fourth aspect of the present invention, a means for comparing an SIR measurement result based on the reception SIR measurement method according to the eighth aspect with a preset target value of SIR, based on the comparison result, Means for transmitting a transmission power control signal to a 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 transmission power control device.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention described below provides a desired signal power measurement method for measuring a desired signal power by directly using an actually measured value of the amplitude of a received data symbol.

Further, since the pilot signal is known for both the transmitting station and the receiving station, it is possible to calculate fading envelope power including noise components without causing a signal point determination error. Therefore, a means for integrating the difference between the average value of the transmission data symbol and the fading envelope containing the noise component in the pilot signal section, and means for averaging the integrated value over a plurality of slots, is provided for converting the integrated value to the reception interference wave. A method for measuring received interference wave power as power is provided.

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

FIG. 1 shows an example of a signal configuration when synchronous detection is performed using a pilot signal. A pilot signal having a known phase on both the transmission side and the reception side is periodically inserted into the transmission signal. One cycle between pilot signals is called a slot.

FIG. 2 shows a method of measuring the power of a desired signal to be received described in claims 1 to 4 on a complex signal space. Here, the transfer function 1 is obtained by first-order interpolation of 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 signal power 2 is obtained as the square of the average distance.

Thus, the signal in which the known pilot signal is inserted into the information signal at predetermined intervals by the transmitting side is interpolated in the baseband complex signal space by using the synchronous detecting apparatus which performs synchronous detection on the receiving side. A 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 a reception desired wave power measuring step of setting the average value to a desired reception wave power is obtained.

FIG. 3 shows a method of measuring the power of a desired reception wave described in claims 5 to 8 on 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 temporary 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 symbol 6 is the received data symbol 3
Is multiplied by the complex conjugate of the transfer function 4. The weighted information symbol 6 is compensated for the phase due to the signal point position in the complex signal space, the compensated value is averaged within one slot, and the desired signal 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 interpolation is calculated, and the ratio is multiplied by the square of the fading envelope. An average is obtained in the interval of the pilot signal interval, and a desired reception wave power measuring step is obtained in which the square of the absolute value of the average value is used as the desired reception wave power.

FIG. 4 illustrates the method of measuring the power of a received interference wave described in claims 1 and 5 on 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 where the weighted information symbol in FIG. 3 exists. By dividing the received data symbol 7 by the estimated signal point 9, a transfer function 10 including an 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 reception interference wave 11 is obtained as a difference between the transfer function 8 and the transfer function 10 including the interference component, and the square of the distance of the reception interference wave 11 is 1
By averaging in the slot, the received interference wave power is obtained.

Thus, 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. Judge a point, calculate a fading envelope including an interference component using the received data symbol and the judgment value, and calculate a fading envelope by the calculated value and the interpolation.
The difference between the envelope and the envelope is calculated, the square of the difference is integrated in the interval of the pilot signal interval, the integrated value is averaged over a plurality of intervals of the pilot interval, and the average value is used as the reception interference wave power. A power measurement step is obtained.

FIG. 5 illustrates the received interference wave power measuring method described in the second, third, sixth and seventh aspects on a complex signal space. Transfer function 1 including received data symbol 12, estimated signal point 13, and interference component
4 corresponds to the transfer function 10 including the received data symbol 7, the estimated signal point 9 and the interference component in FIG. A transfer function 14 including an interference component and an average value 1 of the transfer function 14
The difference from 5 is the received interference wave 16.

However, in the case of claim 2 and claim 3,
The square of the distance of the received interference wave 16 is integrated in one slot,
By averaging the integrated value over a plurality of slots, the received interference wave power is obtained. In the case of claims 6 and 7, the power of the received interference wave is obtained by integrating the square of the distance of the received interference wave 16 in the pilot and averaging the integrated value 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, and the ratio is multiplied by the square of the fading envelope. Determining a point, calculating a fading envelope including an interference component using the received data symbol and the determination value, calculating an average value of the received data symbol over the interval of the pilot signal interval,
The difference between the envelope and the average is calculated, the square of the difference is integrated in the interval of the pilot signal interval, the integrated value is averaged over a plurality of intervals of the pilot interval, and the average is defined as the received interference wave power. The received interference wave power measurement step is obtained.

Similarly, 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. A signal point is determined, a fading envelope including an interference component is calculated using the received data symbol and the determined value, an average value of the received data symbol is calculated over the section of the pilot signal, and the fading envelope and the average are calculated. Calculate the difference with the value, integrate the square of the difference only in the section of the pilot signal, average the integrated value over a section of a plurality of pilot intervals, and use the average as the received interference wave power. A wave power measurement step is obtained.

FIG. 6 is a diagram showing 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 symbol 6 according to the signal point position in the complex signal space, and averaging the compensation value within one slot. The difference between the weighted information symbol 20 and the average value 21 is defined as a received interference wave 22.

Thus, 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 in the interval of the signal interval, calculating the difference between the average value and the multiplication result, integrating the square of the difference in the interval of the pilot signal interval, and averaging the integrated value over a plurality of intervals of the pilot interval. And a step of measuring the received interference wave power using the average value as the received interference wave power.

FIG. 7 is a block diagram for implementing the method of measuring the power of a desired reception wave described in the first to fourth aspects of the present invention.

The baseband received signal 23 is input to a pilot signal detector 24. The transfer function estimating unit 25 estimates a transfer function corresponding to the pilot signal using the detected pilot signal. The interpolation unit 26 performs primary interpolation on a transfer function obtained from pilot signals at both ends of the information symbol to obtain a transfer function corresponding to the information symbol. After averaging the transfer function over one slot in the averaging unit 27, the power calculation unit 28 calculates the power of the average value. The above power calculation result is output as the desired reception wave power 29.

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

The baseband received signal 30, pilot signal detecting section 31, transfer function estimating section 32, averaging section 29, and power calculating section 36 correspond to baseband received signal 23, pilot signal detecting section 24, transfer function 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 a pilot signal detector 31 and a weighting multiplier 34. The output of the transfer function estimating unit 32 is input to a weighting multiplier 34 after taking a complex conjugate by a phase inverter 33.
After averaging the output of the multiplier 34 over one slot in the averaging unit 35, the power calculation 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 implementing the received interference wave power measuring method described in claims 1 and 5.

The output of the multiplier is the same as the output from the weighting multiplier in FIG. 8, and the interpolation output 42 is
Is the same as the output from the interpolation interpolating unit 26 in FIG.

The baseband received signal 38 is inputted to a transfer function estimating divider 41, and the output of the multiplier is outputted to the signal point judging section 4.
Enter 0. In the signal point determination unit 40, the multiplier output 39
Examines the quadrants present in the complex signal space to determine the signal point of the information symbol. The transfer function estimating divider 41 outputs a ratio between the baseband received signal 38 and the signal point. The differentiator 43 outputs a difference between the ratio and the interpolation output 42. After the power calculator 44 calculates the difference power, the averaging unit 45 averages the power over one slot. The average value is the received interference wave power 4
6 is output.

FIG. 10 shows a second, third and sixth aspect of the present invention.
FIG. 9 is a block diagram for implementing the received interference wave 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 include the baseband reception signal 38 and the signal point determination unit 4 in FIG.
0, the same configuration as the transfer function calculation divider 41, the difference unit 43, the power calculation unit 44, and the averaging unit 45.

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

The difference unit 52 outputs a difference between the average value and the output of the transfer function calculating divider 50. The power calculator 53 calculates and outputs the power of the difference. In the case of claims 2 and 6, the averaging unit 54 averages the power over one slot, and in the case of claims 3 and 7, the averaging unit 54 averages the power over the pilot section. The average value is output as 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 detector 57, transfer function estimator 58, phase inverter 59, weighting multiplier 60, averaging unit 61, and power calculator 6
4 is a baseband received signal 30, a pilot detector 31, a transfer function estimator 32, a phase inverter 33,
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 a pilot signal detector 57 and a weighting multiplier 60. The output of the transfer function estimating unit 58 is input to a weighting multiplier 60 after taking a complex conjugate by a 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. After averaging the output of the multiplier over one slot in the averaging section 61, the difference between the buffer output and the average value is calculated, and the power calculation section 64 calculates the power of the difference value. The above power calculation result is output as received interference wave power 63.

FIG. 12 is a diagram showing a reception SI described in claim 9.
It is a block diagram of an R measurement device.

The pilot detection unit 67 to the desired reception power 72 corresponds to the desired reception power 29 from the pilot detection unit 24 in FIG. 7, and the signal point determination unit 75 to the reception interference power 80 in FIG. This corresponds to the received interference wave power 46 from the determination unit 40. Further, 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 reception signal 66 and supplies the synchronization signal to a portion requiring the synchronization signal. The SIR calculation divider 81 calculates the ratio between the desired reception wave power 72 and the reception interference wave power 80. The above ratio is output as the reception SIR 82.

[0067]

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

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

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

The reception SIR measurement is as described in FIG.

The transmission power control bit determination section 101 compares the measured reception SIR with a preset target SIR. The transmission power control bit is set in a direction 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.

Further, the receiving station extracts transmission power control bits from the baseband signal after interpolation and synchronous detection in transmission power control bit extraction section 107, and transmits transmission power control section 108 in accordance with the value of the transmission power control bits. To increase or decrease the transmission power.

[0073]

As described above, according to the present invention, C
More accurate measurement of the reception SIR in the transmission power control device of the DMA system becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a signal configuration when performing interpolation and synchronous detection.

FIG. 2 is a block diagram showing a complex signal space;
FIG. 5 is a diagram showing a method of measuring the power of a desired signal to be received.

FIG. 3 is a block diagram showing a complex signal space;
FIG. 5 is a diagram showing a method of measuring the power of a desired signal to be received.

FIG. 4 is a diagram showing the received interference wave power measuring 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 claims 2, 3, 6, and 7 described in a complex signal space.

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

FIG. 7 is a block diagram for implementing the method of measuring the power of a desired reception wave according to claims 1 to 4;

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

FIG. 9 is a block diagram for implementing the received interference wave power measuring method according to claims 1 and 5;

FIG. 10 is a block diagram for implementing the received interference wave power measuring method according to the second, third, sixth, and seventh aspects.

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

FIG. 12 is a block diagram of a desired signal power measuring apparatus according to the first embodiment.

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

[Explanation of symbols]

 1 Transfer Function by Interpolation 2 Desired Received Wave Power 3 Received Data Symbol 4 Transfer Function by Interpolation 5 Temporary Information Symbol with Transfer Function Compensation 6 Weighted Information Symbol 7 Received Data Symbol 8 Transfer Function by Interpolation 9 Estimated signal point 10 Transfer function including interference component 11 Received interference wave 12 Received data symbol 13 Estimated signal point 14 Transfer function by interpolation 15 Transfer function including interference component 16 Received interference wave 17 Received data symbol 18 By interpolation Transfer Function 19 Temporary Information Symbol Compensated for Transfer Function 20 Weighted Information Symbol 21 Average Value of Weighted Information Symbol 22 Received Interference Wave 23 Baseband Received Signal 24 Pilot Signal Detector 25 Transfer Function Estimator 26 Interpolation Unit 27 averaging unit 28 power calculation unit 29 reception Desired wave power 30 Baseband received signal 31 Pilot signal detection unit 32 Transfer function estimation unit 33 Phase inverter 34 Weighting multiplier 35 Averaging unit 36 Power calculation unit 37 Desired reception wave power 38 Baseband reception signal 39 Weighting multiplier Output 40 Signal point judgment unit 41 Transfer function estimation divider 42 Transfer function estimation output 43 Difference unit 44 Power calculation unit 45 Averaging unit 46 Received interference wave power 47 Baseband reception signal 48 Weighting multiplier output 49 Signal point judgment unit Reference Signs List 50 Divider for transfer function calculation 51 Averaging unit 52 Difference unit 53 Power calculating unit 54 Averaging unit 55 Received interference wave power 56 Baseband received signal 57 Pilot detecting unit 58 Transfer function estimating unit 59 Phase inverter 60 Weighting multiplier 61 Averaging unit 62 Multiplier output storage buffer 63 Integrator 64 Power calculation unit 65 Received interference wave power 66 Baseband received signal 67 Pilot detection unit 68 Transfer function estimation unit 69 Interpolation unit 70 Averaging unit 71 Power calculation unit 72 Received desired wave power 73 Phase inverter 74 Weighting multiplier 75 Signal point determination unit 76 Transfer function calculation divider 77 Difference unit 78 Power calculation unit 79 Averaging unit 80 Received interference wave power 81 SIR calculation divider 82 Receive SIR 83 Synchronization detection unit 84 Antenna 85 Transmission / reception separation unit 86 Reception radio unit 87 despreading unit 88 interpolation interpolation synchronous detection unit 89 phase inverter 90 weighting multiplier 91 signal point determination unit 92 transfer function calculation (division) unit 93 synchronization detection unit 94 Viterbi decoding unit 95 averaging unit 96 differentiator 97 power Calculation unit 98 Averaging unit 99 Power calculation unit 100 SIR measurement unit 101 Transmission power control bit determination unit 02 signal generator 103 encoder 104 modulator 105 spreading section 106 transmission radio section 107 transmits the power control bit extracting section 108 transmission power control unit

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Mamoru Sawabashi 2-10-1 Toranomon, Minato-ku, Tokyo NTT Mobile Communications Network Co., Ltd.

Claims (24)

[Claims] 1. A base station in which a signal in which a known pilot signal is inserted into an information signal at predetermined intervals by a transmitting side is interpolated in a baseband complex signal space by using a synchronous detecting apparatus that performs synchronous detection on a receiving 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 desired desired signal power as the desired desired signal power; 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 result of the multiplication. A fading envelope including an interference component is calculated by using the symbol and the determination value, and the calculated value and the fading by the interpolation are calculated. Calculating the difference from the envelope, summing the square of the difference in the interval of the pilot signal interval, averaging the integrated value over a plurality of intervals of the pilot interval, and using the average value as the reception interference power An interference wave power measuring step, and a calculating step of calculating a ratio between the desired reception wave power and the received interference wave power, wherein the calculated ratio is calculated by an SIR
(A desired signal to interference signal power ratio). 2. A base station in which a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side is interpolated in a baseband complex signal space using a synchronous detecting apparatus that synchronously detects the signal on a receiving 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 desired desired signal power as the desired desired signal power; 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 result of the multiplication. A fading envelope including an interference component is calculated using the symbol and the determination value, and is calculated in the interval of the pilot signal interval. Calculating the average value of the received data symbols, calculating the difference between the fading envelope and the average value, integrating the square of the difference in the interval of the pilot signal interval, and calculating the integrated value over a plurality of pilot intervals. Averaged over the section of, the received interference wave power measuring step to make the average value the received interference wave power, and a calculation step of calculating a ratio between the desired reception wave power and the received interference wave power, SIR ratio
(A desired signal to interference signal power ratio). 3. A signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmission side is interpolated in a baseband complex signal space by using a synchronous detection apparatus that performs synchronous detection on a reception 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 desired desired signal power as the desired desired signal power; 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 result of the multiplication. And calculating a fading envelope including an interference component using the determination value, and calculating the fading envelope over the section of the pilot signal. Calculating the average value of the received data symbols, calculating the difference between the fading envelope and the average value, integrating the square of the difference only in the section of the pilot signal, and calculating the integrated value in a section of a plurality of pilot intervals. Averaged over, and a received interference wave power measuring step of setting the average value to the received interference wave power; anda calculating step of calculating a ratio between the desired reception wave power and the received interference wave power, the calculated ratio SIR
(A desired signal to interference signal power ratio). 4. A synchronous detection device for synchronously detecting a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmission side on a reception side, by interpolation on a baseband complex signal space. Calculating a power value of the obtained fading envelope, averaging the power value in a section of a predetermined pilot signal interval, and measuring a desired power of the desired signal as the desired power of the desired signal; Calculating the ratio between the received data symbol and the fading envelope obtained by interpolation, multiplying the ratio by the square of the fading envelope, averaging the multiplication result in the interval of the pilot signal interval, Calculate the difference between the value and the result of the multiplication,
A step of measuring the power of the received interference wave, wherein the square of the difference is integrated in the interval of the pilot signal interval, the integrated value is averaged over a plurality of intervals of the pilot interval, and the average value is set to the received interference wave power; Calculating a ratio between the wave power and the received interference wave power, and calculating the calculated ratio by SIR
(A 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 result of the multiplication is calculated. Averaging in the interval of the pilot signal interval, a desired signal power measuring step of taking the square of the absolute value of the average value as the desired signal power, and determining a signal point from the result of the multiplication in a complex signal space; A fading envelope including an interference component is calculated using the received data symbol and the determination value, a difference between the calculated value and the fading envelope by the interpolation is calculated, and the square of the difference is used as a pilot signal interval. , The integrated value is averaged over a plurality of intervals of the pilot interval, and the average is used 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
(A desired signal to interference signal power ratio). 6. In a complex signal space, a ratio between a received data symbol and a fading envelope obtained by interpolation is calculated, and the ratio is calculated based on the fading envelope.
Multiplying the square of the envelope, averaging the result of the multiplication in the section of the pilot signal interval, and measuring the desired signal power as the square of the absolute value of the average value; Determining a signal point from the multiplication result, calculating a fading envelope including an interference component using the received data symbol and the determined value, and calculating an average value of the received data symbol over the interval of the pilot signal interval. Calculating the difference between the fading envelope and the average value, integrating the square of the difference over the interval of the pilot signal interval, averaging the integrated value over a plurality of pilot interval intervals, and receiving the average value. Measuring a received interference wave power as an interference wave power; and calculating a ratio between the desired reception wave power and the received interference wave power. And a flop, SIR the calculated ratio
(A desired signal to interference signal power ratio). 7. In a complex signal space, a ratio between a received data symbol and a fading envelope obtained by interpolation is calculated, and the ratio is calculated based on the ratio.
Multiplying the square of the envelope, averaging the result of the multiplication in the section of the pilot signal interval, and measuring the desired signal power as the square of the absolute value of the average value; In, calculate the ratio between the received data symbol and the fading envelope obtained by interpolation, multiply the ratio by the square of the fading envelope, determine the signal point from the result of the multiplication, the received data symbol and Calculating a fading envelope including an interference component using the determination value, calculating an average value of received data symbols over the section of the pilot signal, calculating a difference between the fading envelope and the average value, and calculating the difference Is integrated only in the section of the pilot signal, and the integrated value is spread over a plurality of sections of the pilot interval. Average, and a received interference wave power measuring step of using the average value as a received interference wave power; anda calculating step of calculating a ratio between the desired reception wave power and the received interference wave power, the calculated ratio SIR
(A desired signal to interference signal power ratio). 8. Computing a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space, and calculating the ratio of the fading envelope to the ratio.
Multiplying the square of the envelope, averaging the result of the multiplication in the section of the pilot signal interval, and measuring the desired signal power as the square of the absolute value of the average value; Calculating the ratio between the received data symbol and the fading envelope obtained by interpolation, multiplying the ratio by the square of the fading envelope, averaging the multiplication result in the interval of the pilot signal interval, Calculate the difference between the average value and the multiplication result,
A step of measuring the power of the received interference wave, wherein the square of the difference is integrated in the interval of the pilot signal interval, the integrated value is averaged over a plurality of intervals of the pilot interval, and the average value is set to the received interference wave power; Calculating a ratio between the wave power and the received interference wave power, and calculating the calculated ratio by SIR
(A desired signal to interference signal power ratio). 9. A base station in which a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side is interpolated in a baseband complex signal space by using a synchronous detecting apparatus that performs synchronous detection on a receiving side. Means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a section of a predetermined pilot signal interval, and measuring a desired desired wave power using the average as a desired desired wave power A circuit for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space; a unit for multiplying the ratio by the square of the fading envelope; 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 determined value. Means for calculating a flop, means for calculating a difference between the fading envelope by between said interpolation and the computed value,
Means for integrating the square of the difference in a section of a pilot signal interval, and means for averaging the integrated value over sections of a plurality of pilot intervals; And a calculating circuit for calculating a ratio between the desired reception wave power and the reception interference wave power, wherein the calculated ratio is defined as SIR (a desired signal to interference signal power ratio).
IR measuring device. 10. A signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side is interpolated in a baseband complex signal space by using a synchronous detecting apparatus which performs synchronous detection on a receiving side. Means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a section of a predetermined pilot signal interval, and measuring a desired desired wave power using the average as a desired desired wave power A circuit for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space; a unit for multiplying the ratio by the square of the fading envelope; 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 determined value. Means for calculating a-loop, means for calculating an average value of the received data symbols over intervals of the pilot signal interval,
Means for calculating a difference between the fading envelope and the average value, means for integrating the square of the difference in a section of a pilot signal interval, and means for averaging the integrated value over a section of a plurality of pilot intervals. A reception interference power measurement circuit that uses the average value as the reception interference power, and an arithmetic circuit that calculates a ratio between the desired reception power and the reception interference power. Signal-to-interference signal power ratio).
IR measuring device. 11. A base station in which a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side is interpolated in a baseband complex signal space by using a synchronous detecting apparatus that performs synchronous detection on a receiving side. Means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a section of a predetermined pilot signal interval, and measuring a desired desired wave power using the average as a desired desired wave power A circuit for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space; a unit for multiplying the ratio by the square of the fading envelope; 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 determined value. Means for calculating the average value of the received data symbols over the section of the pilot signal; means for calculating the difference between the fading envelope and the average value; Means for integrating only in the section, and means for averaging the integrated value over a section of a plurality of pilot intervals, a reception interference power measurement circuit that sets the average value to reception interference power, An arithmetic circuit for calculating a ratio with respect to the received interference wave power, wherein the calculated ratio is defined as SIR (desired signal to interference signal power ratio).
IR measuring device. 12. A base station in which a signal in which a known pilot signal is inserted into an information signal at a predetermined interval by a transmitting side is interpolated in a baseband complex signal space by using a synchronous detecting apparatus that synchronously detects the signal on a receiving side. Means for calculating a power value of a fading envelope obtained by interpolation, and means for averaging the power value in a section of a predetermined pilot signal interval, and measuring a desired desired wave power using the average as a desired desired wave power A circuit for calculating a ratio between a received data symbol and a fading envelope obtained by interpolation in a complex signal space; a unit for multiplying the ratio by the square of the fading envelope; Means for averaging 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 Means for integrating in a section of a pilot signal interval, means for averaging the integrated value over a section of a plurality of pilot intervals, a reception interference power measurement circuit for setting the average to reception interference power, And a calculating circuit for calculating a ratio between the power of the received interference wave and the power of the received interference wave, wherein the calculated ratio is defined as 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, means for multiplying said ratio by the square of said fading envelope, and said multiplication. Means for averaging the result in the interval of the pilot signal interval, a desired signal power measuring circuit for setting the square of the absolute value of the average value to the desired signal power, and a reception data symbol on 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 result of the multiplication; Means for calculating a fading envelope including an interference component using the determination value, and the calculated value and the And means for calculating the difference between the fading envelope by between interpolation,
Means for integrating the square of the difference in a section of a pilot signal interval, and means for averaging the integrated value over sections of a plurality of pilot intervals; And a calculating circuit for calculating a ratio between the desired reception wave power and the reception interference wave power, wherein the calculated ratio is defined as an SIR (a 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, means for multiplying the ratio by the square of the fading envelope, and the multiplication. Means for averaging the result in the section of the pilot signal interval, a circuit for measuring a desired signal power to receive the square of the average absolute value, and a desired 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 result of the multiplication; Means for calculating a fading envelope including an interference component using the judgment value and the judgment value; Means for calculating a mean value of the received data symbols over period interval,
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; and means for averaging the integrated value over a plurality of pilot intervals. A reception interference power measurement circuit that uses the average value as the reception interference power, and an arithmetic circuit that calculates a ratio between the desired reception power and the reception interference power. 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, means for multiplying the ratio by the square of the fading envelope, and the multiplication. Means for averaging the result in the interval of the pilot signal interval, a circuit for measuring a desired-wave power to receive the desired-square power of the square of the average absolute value; Means for calculating the ratio of the fading envelope obtained by interpolation to the fading envelope.
Means for multiplying the square of the envelope, means for determining a signal point from the result of the multiplication, means for calculating a fading envelope including an interference component using a received data symbol and the determination value, and 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 section of the pilot signal; Means for averaging over an interval of a plurality of pilot intervals, a reception interference power measurement circuit for setting the average value to reception interference power, and an arithmetic circuit for calculating a ratio between the desired reception power and the reception interference power And the calculated ratio is defined as 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, means for multiplying the ratio by the square of the fading envelope, and the multiplication. Means for averaging the result in the section of the pilot signal interval, a circuit for measuring a desired signal power to receive the square of the average absolute value, and a desired 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 averaging the result of the multiplication in a section of a pilot signal interval, Means for calculating a difference between the average value and the multiplication result, and means for integrating the square of the difference in a section of the pilot signal interval Means for averaging the integrated value over a section of a plurality of pilot intervals, a reception interference power measurement circuit for setting the average to reception interference power, and a ratio of the desired reception power to the reception interference power. And a calculating circuit for calculating the 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. 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 transmission power control device characterized by the above-mentioned. 18. A means for comparing an SIR measurement result based on the reception 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. 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 transmission power control device characterized by the above-mentioned. 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. 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 transmission power control device characterized by the above-mentioned. 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. 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 transmission power control device characterized by the above-mentioned. 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. 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 transmission power control device characterized by the above-mentioned. 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. 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 transmission power control device characterized by the above-mentioned. 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. 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. Characteristic transmission power control device. 24. A means for comparing an SIR measurement result based on the reception 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. 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. Characteristic transmission power control device.