JP2002043980A - Wireless receiving device and wireless receiving method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless receiving device that accurately conducts weighting a RAKE synthesis so as to prevent the quality of a RAKE synthesis signal from being deteriorated. SOLUTION: A phase estimate section 102 obtains a phase estimate value of an individual channel signal, an SIR(Signal to Interference Ratio) measurement section 103 measures an SIR of the individual channel signal, a weighting section 104 applies weighting to the phase estimate value with a coefficient proportional to the magnitude of the SIR, a phase compensation section 105 uses the weighted phase estimate value to apply phase compensation to the individual channel signal and a RAKE synthesis section 106 sums output signals of fingers 1-n to apply RAKE synthesis to the output signals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a radio receiving apparatus and a radio receiving method.

[0002]

2. Description of the Related Art In recent years, the demand for land mobile communications such as mobile phones has increased remarkably. In order to secure more subscriber capacity in a limited frequency band, a technology for effectively using frequencies has been developed. Is important.

[0003] A CDMA system has attracted attention as one of the multiple access systems for effectively utilizing the frequency. CDM
The A system is a multiple access system using a spread spectrum technique and has a feature that it is hardly affected by multipath distortion. In communication by the CDMA system, RAKE
By receiving, a diversity effect can be expected.

[0004] A conventional radio receiving apparatus that performs RAKE reception will be described below. FIG. 4 is a main block diagram showing a schematic configuration of a conventional wireless receiving apparatus. In FIG.
Each of the fingers 1 to n includes a despreading unit 11, a phase estimating unit 12, and a phase compensating unit 13.

[0005] The despreading unit 11 performs despreading processing on the individual channel signal, which is a received signal, and outputs a signal d _corr (l, m, n) shown in equation (1).

(Equation 1) Equation (1) shows the despread signal of the mth slot and the nth symbol of the lth finger. S is the amplitude of the desired wave, I is the amplitude of the interference wave, θ (m, n) is the modulation phase, φ (l, m, n) is the sum of the phase variation due to the propagation path and the phase difference between transmission and reception, ν (l, m, n) indicates the phase of the interference wave.

[0006] The phase estimating unit 12 obtains a phase estimation value ξ shown in equation (2).

(Equation 2) N _P indicates the number of pilot symbols,
ξ (l, m) indicates the phase estimation value of the m-th slot of the l-th finger. The phase estimation value ξ can be obtained by correcting the modulation phase of the received pilot symbol.

Alternatively, as shown in equation (3), the phase estimator 12 calculates the phase estimation value obtained by using equation (2) in a plurality of slots (2K slots in equation (3)).
And then averaged to obtain the phase estimation value ξ.

(Equation 3)

The phase compensator 13 performs a complex multiplication of the despread signal d _corr shown in equation (1) and the complex conjugate ξ ^* of the phase estimation value ξ shown in equation (2) or (3), Perform phase compensation. Therefore, the signal d _cohe output from each of the fingers 1 to n is as shown in Expression (4).

(Equation 4)

The RAKE combiner 14 adds the output signals d _cohe of the fingers 1 to n shown in the equation (4) and adds
Perform KE synthesis. RAKE composite signal d added
_rake is as shown in equation (5). Note that N _L indicates the number of fingers.

(Equation 5)

[0010]

Here, since the received signal is a signal in which the desired wave and the interference wave are mixed, the reception level of the received signal is a level obtained by adding the desired wave level and the interference wave level. Becomes The RAKE composite signal is a signal weighted by the reception level of the received signal as shown in the above equation (5).

Therefore, in the above-mentioned conventional radio receiving apparatus, when the interference wave level becomes relatively higher than the desired wave level, the RAKE combined signal has a higher interference wave level than the degree of weighting at the desired wave level. , The degree of weighting becomes high, and consequently, there is a problem that the reception quality is degraded despite performing RAKE combining.

[0012] The present invention has been made in view of the above point, and the weighting at the time of RAKE synthesis is accurately performed, and R
An object of the present invention is to provide a wireless receiving apparatus and a wireless receiving method that can prevent the quality of an AKE combined signal from deteriorating.

[0013]

According to the present invention, there is provided a radio receiving apparatus comprising: estimating means for obtaining an estimated phase value of a received signal; measuring means for measuring a desired signal to interference wave power ratio of the received signal; Weighting means for weighting according to the desired wave-to-interference wave power ratio, compensation means for compensating for the phase of the received signal using a weighted phase estimation value, and combining a plurality of phase-compensated received signals. Signal synthesizing means,
Is adopted.

According to this configuration, the phase estimation value is weighted according to the desired signal-to-interference-wave power ratio of the received signal. Therefore, when the interference wave level increases, the weight value at the time of RAKE combining decreases. Therefore, it is possible to prevent the quality of the RAKE combined signal from deteriorating.

The radio receiving apparatus according to the present invention comprises: a first estimating means for obtaining a first phase estimation value of a first channel signal; a second estimating means for obtaining a second phase estimation value of a second channel signal; Estimated value combining means for obtaining a combined phase estimate obtained by combining the phase estimate and the second phase estimate; compensation means for compensating the phase of the first channel signal using the combined phase estimate; Signal combining means for combining the plurality of compensated first channel signals.

According to this configuration, the first phase estimation value and the second
And the RAK using the combined phase estimate.
Since weighting is performed at the time of E combining, demodulation performance is improved as compared with the case where phase compensation is performed using only the first phase estimation value.

[0017] The radio receiving apparatus of the present invention, in the above-described configuration, includes a measuring unit for measuring the reception quality of the first channel signal, and a weighting unit for weighting the combined phase estimation value according to the reception quality. The compensator compensates for the phase of the first channel signal using the weighted combined phase estimation value.

According to this configuration, the combined phase estimation value is set to the first
Since the weighting is performed according to the reception quality of the channel signal, when the reception level of the common pilot channel signal is relatively high and the reception level of the dedicated channel signal is relatively low, the quality of the RAKE combined signal is prevented from deteriorating. can do.

The radio receiving apparatus according to the present invention, in the above configuration, comprises a first measuring means for measuring the first receiving quality of the first channel signal, and a second measuring means for measuring the second receiving quality of the second channel signal. Comparing and selecting means for comparing the first reception quality and the second reception quality to select a better reception quality; weighting means for weighting the combined phase estimation value according to the selected reception quality; Wherein the compensating means compensates for the phase of the first channel signal using the weighted combined phase estimation value.

According to this configuration, the first reception quality is compared with the second reception quality, and the combined phase estimation value is weighted according to the better reception quality. When the ratio of the reception level of the channel signal is the same for each communication partner, it is possible to prevent the quality of the RAKE combined signal from deteriorating.

A communication terminal device according to the present invention employs a configuration in which any one of the above-mentioned radio receiving devices is mounted. Further, the base station apparatus of the present invention employs a configuration in which any one of the above radio receiving apparatuses is mounted.

According to these configurations, the communication terminal apparatus and the base station apparatus can accurately perform weighting at the time of RAKE combining.

According to the radio receiving method of the present invention, there is provided an estimation step for obtaining a phase estimation value of a reception signal, a measurement step for measuring a power ratio of a desired signal to an interference wave of the reception signal, and A weighting step of weighting according to the wave power ratio, a compensation step of compensating for the phase of the received signal using the weighted phase estimation value, and a signal combining step of combining a plurality of phase-compensated received signals. Was provided.

According to this method, the phase estimation value is weighted according to the desired signal to interference wave power ratio of the received signal. Therefore, when the interference wave level increases, the value of the weight at the time of RAKE combining decreases. Therefore, it is possible to prevent the quality of the RAKE combined signal from deteriorating.

According to the radio receiving method of the present invention, a first estimating step of obtaining a first phase estimation value of a first channel signal, a second estimating step of obtaining a second phase estimation value of a second channel signal, An estimation value combining step of obtaining a combined phase estimation value by combining a phase estimation value and the second phase estimation value; a compensation step of compensating the phase of the first channel signal using the combined phase estimation value; A signal combining step of combining the compensated plurality of first channel signals.

According to this method, the first phase estimation value and the second phase
And the RAK using the combined phase estimate.
Since weighting is performed at the time of E combining, demodulation performance is improved as compared with the case where phase compensation is performed using only the first phase estimation value.

[0027] The radio reception method of the present invention, in the above method, includes a measurement step of measuring the reception quality of the first channel signal, and a weighting step of weighting the combined phase estimation value according to the reception quality. In the compensating step, the phase of the first channel signal is compensated for using the weighted combined phase estimation value.

According to this method, the combined phase estimation value is set to the first
Since the weighting is performed according to the reception quality of the channel signal, when the reception level of the common pilot channel signal is relatively high and the reception level of the dedicated channel signal is relatively low, the quality of the RAKE combined signal is prevented from deteriorating. can do.

The radio receiving method according to the present invention, in the above method, comprises: a first measuring step of measuring a first receiving quality of a first channel signal; and a second measuring step of measuring a second receiving quality of a second channel signal. A comparison and selection step of comparing the first reception quality and the second reception quality to select a better reception quality, and a weighting step of weighting the combined phase estimation value according to the selected reception quality; In the compensating step, the phase of the first channel signal is compensated for using the weighted combined phase estimation value.

According to this method, the first reception quality is compared with the second reception quality, and the combined phase estimation value is weighted according to the better reception quality. When the ratio of the reception level of the channel signal is the same for each communication partner, it is possible to prevent the quality of the RAKE combined signal from deteriorating.

[0031]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) The radio receiving apparatus according to the present embodiment converts the phase estimation value to the SIR (Signalto
Interference Ratio (weight ratio of desired wave to interference wave power).

Hereinafter, the radio receiving apparatus according to the present embodiment will be described with reference to FIG. FIG. 1 is a main part block diagram showing a schematic configuration of the wireless receiving apparatus according to Embodiment 1 of the present invention. 1, fingers 1 to n include a despreading unit 101, a phase estimating unit 102, an SIR measuring unit 103, a weighting unit 104, and a phase compensating unit 105.

[0034] Despreading section 101 performs despreading processing on the individual channel signal that is the received signal. Phase estimation unit 10
2 finds a phase estimate for the dedicated channel signal. SIR
Measurement section 103 measures the SIR of the individual channel signal. Weighting section 104 weights the phase estimation value with a coefficient proportional to the magnitude of the SIR. The phase compensation unit 105
Phase compensation is performed on the despread signal. Also, RA
The KE combining unit 106 performs RAKE combining by adding the output signals of the fingers 1 to n. As a result, a RAKE composite signal is obtained.

Next, the operation of the radio receiving apparatus having the above configuration will be described. First, a despreading unit 101 performs a despreading process on a dedicated channel signal, which is a received signal, and converts a signal d _corr (l, m, n) shown in Expression (6) into a phase estimating unit 102 and a phase compensating unit. Output to 105.

(Equation 6) Equation (6) shows the despread signal of the m-th slot and the n-th symbol of the l-th finger. S is the amplitude of the desired wave, I is the amplitude of the interference wave, θ (m, n) is the modulation phase, φ (l, m, n) is the sum of the phase variation due to the propagation path and the phase difference between transmission and reception, ν (l, m, n) indicates the phase of the interference wave.

Next, the phase estimation section 102 obtains the phase estimation value ξ of the dedicated channel signal shown in equation (7),
Output to R measuring section 103 and weighting section 104.

(Equation 7) N _P indicates the number of pilot symbols,
ξ (l, m) indicates the phase estimation value of the m-th slot of the l-th finger. The phase estimation value ξ can be obtained by correcting the modulation phase of the received pilot symbol.

As shown in equation (8), phase estimating section 102 converts the phase estimation value obtained using equation (7) into α in a plurality of slots (2K slots in equation (8)). After weighting and averaging, the phase estimation value ξ may be obtained.

(Equation 8)

The SIR measuring section 103 first uses the phase estimation value ξ to obtain the RSSI (Received S
ignal Strength Indicator (desired wave power) is measured,
According to equation (10), the ISSI (Interference Signal St
rength Indicator (interference wave power) is measured. Equation (9) is the RSSI of the m-th slot of the l-th finger.
Equation (10) indicates the ISSI of the m-th slot of the l-th finger.

(Equation 9)

(Equation 10)

Next, in the SIR measuring section 103, the RSSI
The SIR is measured by determining the ratio of ISIR to ISSI. The measured SIR is output to weighting section 104.

In the weighting section 104, the phase estimation section 102
From the phase estimation value か ら output from
Weighting is performed with a coefficient κ proportional to the magnitude of the SIR output from the SIR measuring unit 103.

[Equation 11] The phase estimation value ξ ′ weighted by the coefficient κ proportional to the magnitude of the SIR is output to the phase compensation unit 105.

The phase compensator 105 performs complex multiplication of the despread signal d _corr shown in equation (6) and the complex conjugate ξ ′ ^{* of the} weighted phase estimation value ξ ′ shown in equation (11). , Phase compensation and weighting during RAKE combining. Therefore, the signal d output from each of the fingers 1 to n
_cohe is as shown in equation (12).

(Equation 12)

Then, the RAKE combining section 106
The output signals d _{cohe of the} fingers 1 to n represented by the equation (12)
Are added and RAKE synthesis is performed as shown in Expression (13). Note that N _L indicates the number of fingers.

(Equation 13)

As described above, according to the radio receiving apparatus according to the present embodiment, the phase estimation value is weighted by the coefficient proportional to the magnitude of the SIR of the received signal. Since the weight value at the time of RAKE combining becomes small, it is possible to prevent the quality of the RAKE combined signal from deteriorating.

(Embodiment 2) The radio receiving apparatus according to the present embodiment combines the phase estimation value of the common pilot channel signal and the phase estimation value of the dedicated channel signal, and uses the combined phase estimation value to make a RAKE. Embodiment 2 is different from Embodiment 1 in that weighting is performed at the time of synthesis.

Hereinafter, a radio receiving apparatus according to Embodiment 2 of the present invention will be described using FIG. FIG. 2 is a main block diagram showing a schematic configuration of the wireless receiving apparatus according to Embodiment 2 of the present invention. However, components having the same configuration as in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

Despreading section 201 performs a despreading process on the common pilot channel signal. Phase estimation unit 202
Finds the phase estimate of the common pilot channel signal. Phase estimation value combining section 203 combines the phase estimation value of the common pilot channel signal and the phase estimation value of the dedicated channel signal. Reception quality measurement section 204 measures the reception level of the dedicated channel signal. Weighting section 205 weights the combined phase estimation value with a coefficient proportional to the magnitude of the reception level.

Next, the operation of the radio receiving apparatus having the above configuration will be described. First, the despreading unit 201 performs despreading processing on the common pilot channel signal,
The common pilot channel signal after despreading is
02 is output. The despread common pilot channel signal output from despreading section 201 is represented by the above equation (6), similarly to the despread individual channel signal output from despreading section 101.

Next, the phase estimation section 202 obtains the phase estimation value ξ _p of the common pilot channel signal, and outputs it to the phase estimation value combining section 203. Further, the phase estimating unit 10
In 2, the phase estimate ξ _d of the dedicated channel signal is obtained,
Output to phase estimation value synthesis section 203 and reception quality measurement section 204. Note that the phase estimation value ξ _p of the common pilot channel signal and the phase estimation value ξ _d of the dedicated channel signal are
Both are represented by the above equation (7).

Next, the phase estimation value combining section 203 combines the phase estimation value ξ _p of the common pilot channel signal and the phase estimation value ξ _d of the dedicated channel signal according to the equation (14), and the combined phase estimation value ξ Is required.

[Equation 14] In Equation (14), ξ _d (l, m) represents a phase estimation value (or a phase estimation value averaged over a plurality of slots) of the dedicated channel signal in the m-th slot of the l-th finger, and ξ _p ( (l, m) indicates the phase estimation value (or the phase estimation value averaged over a plurality of slots) of the common pilot channel signal of the m-th slot of the l-th finger. Λ is a weight coefficient (0 ≦ λ ≦ 1).

In reception quality measuring section 204, phase estimating section 1
02, the estimated phase value of the dedicated channel signal ξ _d
By determining the absolute value | ξ _d (l, m) | of (l, m), the reception level of the dedicated channel signal is measured.
The measured reception level of the dedicated channel signal is output to weighting section 205.

Next, the weighting section 104 calculates the combined phase estimated value ξ output from the phase estimated value combining section 203.
Is weighted by equation (15) with a coefficient κ proportional to the magnitude of the reception level of the dedicated channel signal output from the reception quality measurement section 204.

(Equation 15) The phase estimation value ξ ′ weighted by the coefficient κ proportional to the magnitude of the reception level of the dedicated channel signal is
5 is output.

As described above, according to the radio receiving apparatus according to the present embodiment, the phase estimation value of the common pilot channel signal and the phase estimation value of the dedicated channel signal are combined, and RAKE is performed using the combined phase estimation value. Since weighting is performed at the time of combining, demodulation performance is improved as compared with the case where phase compensation is performed using only the phase estimation value of the dedicated channel signal.

According to the radio receiving apparatus of the present embodiment, the combined phase estimation value is weighted by a coefficient proportional to the magnitude of the reception level of the dedicated channel signal, so that the reception level of the common pilot channel signal is reduced. When the reception level of the individual channel signal is relatively large and the reception level of the individual channel signal is relatively small, the combined phase estimation value becomes small and the weight value at the time of RAKE combining becomes small. Therefore, when the transmission power ratio of the common pilot channel signal and the dedicated channel signal is different for each communication partner and the ratio of the reception level of the common pilot channel signal to the reception level of the dedicated channel signal is different for each communication partner, the reception level is small. Since the weight of the dedicated channel signal can be reduced, RAK
It is possible to prevent the quality of the E combined signal from deteriorating.

In this embodiment, reception quality measuring section 204 measures the SIR of the dedicated channel signal,
The weighting section 205 calculates the combined phase estimation value 出力 output from the phase estimation value combining section 203 by the equation (16) using the S of the dedicated channel signal output from the reception quality measuring section 204.
Weighting may be performed with a coefficient κ proportional to the magnitude of IR.

(Equation 16)

(Embodiment 3) The radio receiving apparatus according to the present embodiment compares the reception level of the common pilot channel signal with the reception level of the dedicated channel signal, and is proportional to the larger reception level. Embodiment 2 is different from Embodiment 2 in that the composite phase estimation value is weighted by a coefficient.

Hereinafter, a radio receiving apparatus according to Embodiment 3 of the present invention will be described using FIG. FIG. 3 is a main part block diagram showing a schematic configuration of a radio receiving apparatus according to Embodiment 3 of the present invention. However, components having the same configuration as those of the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reception quality measurement section 301 measures the reception level of the common pilot channel signal. Comparison and selection unit 30
2 compares the reception level of the common pilot channel signal with the reception level of the dedicated channel signal and selects the higher reception level. Weighting section 303 weights the combined phase estimation value with a coefficient proportional to the magnitude of the reception level selected by comparison selection section 302.

Next, the operation of the radio receiving apparatus having the above configuration will be described. In reception quality measuring section 301, the absolute value | ξ _p (l, m) of phase estimation value ξ _p (l, m) of the common pilot channel signal output from phase estimating section 202 is output.
m) |, the reception level of the common pilot channel signal is measured. The reception level of the measured common pilot channel signal is
Output to Also, the reception level | 個別_d (l, m) | of the dedicated channel signal measured by reception quality measurement section 204
Are also output to the comparison and selection unit 302.

Next, the comparison selection section 302 compares the reception level of the common pilot channel signal with the reception level of the dedicated channel signal. Then, the higher reception level is selected and output to weighting section 303.

Next, the weighting section 303 converts the combined phase estimation value に shown in the above equation (14) output from the phase estimation value combining section 203 into the reception level output from the comparison / selection section 302 according to equation (17). Is weighted by a coefficient κ proportional to the magnitude of Note that max (X, Y) is X
(Here, the reception level of the individual channel signal) or Y
(Here, the reception level of the larger of the reception level of the common pilot channel signal) is used.

[Equation 17] The phase estimation value ξ ′ weighted by the coefficient κ proportional to the greater of the received level of the dedicated channel signal and the received level of the common pilot channel signal is output to the phase compensator 105.

As described above, according to the radio receiving apparatus according to the present embodiment, the phase estimation value of the common pilot channel signal and the phase estimation value of the dedicated channel signal are combined, and RAKE is performed using the combined phase estimation value. Since weighting is performed at the time of combining, demodulation performance is improved as compared with the case where phase compensation is performed using only the phase estimation value of the dedicated channel signal.

Further, according to the radio receiving apparatus according to the present embodiment, the reception level of the common pilot channel signal and the reception level of the dedicated channel signal are compared, and a coefficient proportional to the larger reception level is used. Since the combined phase estimation value is weighted, the transmission power ratio of the common pilot channel signal and the dedicated channel signal is the same for each communication partner, and the ratio of the reception level of the common pilot channel signal to the reception level of the dedicated channel signal is If the other party is the same, RA
It is possible to prevent the quality of the KE composite signal from deteriorating.

In this embodiment, reception quality measurement section 204 measures the SIR of the dedicated channel signal, and reception quality measurement section 301 determines the SIR of the common pilot channel signal.
IR is measured, and the weighting unit 303 calculates the combined phase estimation value ξ output from the phase estimation value combining unit 203 by using the equation (18).
May be weighted by a coefficient κ proportional to the magnitude of the SIR selected by the comparison and selection unit 302.

(Equation 18)

The radio receiving apparatus according to the first to third embodiments is applied to a communication terminal apparatus such as a mobile station apparatus used in a radio communication system, or a base station apparatus which performs radio communication with the communication terminal apparatus. It is possible. When applied, the communication terminal apparatus and the base station apparatus
Weighting at the time of E composition can be performed accurately.

[0065]

As described above, according to the present invention,
It is possible to accurately perform weighting at the time of RAKE combining and prevent the quality of the RAKE combined signal from deteriorating.

[Brief description of the drawings]

FIG. 1 is a main block diagram showing a schematic configuration of a wireless receiving apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a main block diagram showing a schematic configuration of a wireless receiving apparatus according to Embodiment 2 of the present invention.

FIG. 3 is a main block diagram showing a schematic configuration of a wireless receiving apparatus according to Embodiment 3 of the present invention.

FIG. 4 is a main block diagram showing a schematic configuration of a conventional radio receiving apparatus.

[Explanation of symbols]

 102, 202 Phase estimating unit 103 SIR measuring unit 104, 205, 303 Weighting unit 105 Phase compensating unit 106 RAKE combining unit 203 Phase estimated value combining unit 204, 301 Receiving quality measuring unit 302 Comparison selecting unit

Claims (10)

[Claims] 1. Estimating means for obtaining a phase estimation value of a received signal, measuring means for measuring a desired signal to interference wave power ratio of the received signal, and calculating the phase estimation value according to the desired signal to interference wave power ratio. Weighting means for weighting, compensating means for compensating for the phase of the received signal using the weighted phase estimation value, and signal combining means for combining a plurality of phase-compensated received signals. Wireless receiving device. 2. A first estimator for obtaining a first phase estimate of a first channel signal, a second estimator for obtaining a second phase estimate of a second channel signal, the first phase estimate and the second Estimated value combining means for obtaining a combined phase estimate obtained by combining the two-phase estimate and the first phase using the combined phase estimate.
A radio receiving apparatus comprising: compensating means for compensating the phase of a channel signal; and signal combining means for combining a plurality of first channel signals whose phases have been compensated. 3. A method for measuring reception quality of a first channel signal, comprising: weighting means for weighting a combined phase estimation value according to the reception quality; 3. The radio receiving apparatus according to claim 2, wherein a phase of the first channel signal is compensated using a value. 4. A first measurement unit for measuring a first reception quality of a first channel signal, a second measurement unit for measuring a second reception quality of a second channel signal, and the first reception quality and the second reception quality. Comparison and selection means for comparing the reception quality with the reception quality, and weighting means for weighting the combined phase estimation value according to the selected reception quality, and the compensation means is weighted. The radio receiving apparatus according to claim 2, wherein the phase of the first channel signal is compensated using the combined phase estimation value. 5. A communication terminal device equipped with the wireless receiving device according to claim 1. 6. A base station apparatus comprising the radio receiving apparatus according to claim 1. 7. An estimation step for obtaining a phase estimation value of a reception signal, a measurement step for measuring a desired signal to interference wave power ratio of the reception signal, and the phase estimation value according to the desired signal to interference wave power ratio. A weighting step of weighting, a compensation step of compensating for the phase of the received signal using the weighted phase estimation value, and a signal combining step of combining a plurality of phase-compensated received signals. Wireless receiving method. 8. A first estimating step for obtaining a first phase estimate of a first channel signal, a second estimating step for obtaining a second phase estimate of a second channel signal, the first phase estimate and the second An estimated value synthesizing step of obtaining a combined phase estimate obtained by combining the two-phase estimate and the first phase using the combined phase estimate;
A wireless receiving method comprising: a compensating step of compensating a phase of a channel signal; and a signal combining step of combining a plurality of first channel signals whose phases have been compensated. 9. A method for measuring a reception quality of a first channel signal, and a weighting step for weighting a combined phase estimation value according to the reception quality, wherein a weighted combined phase estimation is performed in the compensation step. 9. The method of claim 8, wherein a value is used to compensate for a phase of the first channel signal.
The wireless receiving method described. 10. A first measurement step of measuring a first reception quality of a first channel signal, a second measurement step of measuring a second reception quality of a second channel signal, the first reception quality and the second reception quality of the second channel signal. A comparison selecting step of comparing the reception quality with the better reception quality, and a weighting step of weighting the combined phase estimation value according to the selected reception quality, comprising a weighting step in the compensation step. The radio reception method according to claim 8, wherein the phase of the first channel signal is compensated using the combined phase estimation value.