WO2007013267A1

WO2007013267A1 - Adaptive antenna receiver apparatus

Info

Publication number: WO2007013267A1
Application number: PCT/JP2006/313308
Authority: WO
Inventors: Yasushi Maruta
Original assignee: Nec Corporation
Priority date: 2005-07-26
Filing date: 2006-07-04
Publication date: 2007-02-01

Abstract

An arrival direction/path delay selecting part (108) receives sets each of an arrival direction and a path delay as well as the path reception quality of a user signal in that set from a path reception quality calculating part (106), also receives sets each of an arrival direction and a path delay as well as the inter-path correlations in all the combinations of those sets from an inter-path correlation calculating part (107), and selects sets each of an arrival direction and a path delay for use in demodulation. During that selection, the arrival direction/path delay selecting part (108) performs a correction such that the larger the inter-path correlation is, the smaller the contribution to the total reception quality is, thereby selecting, from among all the combinations of the sets, R sets that maximize the total reception quality of the user signal (where R is an integer equal to or greater than one).

Description

Adaptive antenna receiver

Technical field

The present invention relates to an adaptive antenna receiving apparatus that suppresses interference from other users by antenna directivity control.

Background art

[0002] For cellular mobile communication systems and the like, aiming at high-speed Z signal quality and increased subscriber capacity, an adaptive antenna receiver with multiple antenna element strengths is used to achieve the desired signal direction. For this reason, a method of forming a directivity pattern (beam) that increases the reception gain and decreases the reception gain in other directions is being studied!

[0003] In this type of adaptive antenna receiver, as disclosed in, for example, Patent Publication No. 2004-357315, "Adaptive Array Antenna Directivity Control System", a plurality of different arrival directions and path delays are used. Select the path with the best reception quality of the desired user, and form a directivity pattern in the direction to receive.

FIG. 1 is a block diagram showing an example of a conventional adaptive antenna receiving apparatus.

[0005] Here, L is the number of users (L is an integer greater than 1), N is the number of receive antenna elements (N is an integer greater than 1), and M is the number of receive beams (M is an integer greater than 1). The adaptive antenna receiving device will be described.

[0006] A conventional adaptive antenna receiving apparatus includes a receiving array antenna 101, antenna 1 radio receiving unit 103 to antenna N radio receiving unit 103 corresponding to each receiving antenna element, and user 1

1 N

Demodulation block 204 to user L demodulation block 204 are configured.

1

[0007] The receiving array antenna 101 is composed of N receiving antenna elements 102 to 102.

1 N

. In the horizontal and vertical planes of the receiving antenna elements 102 to 102 alone

1 N

Examples of restrictions on directivity include Omni (omnidirectional) and Dipole (bipolar directivity). N receiving antenna elements 102 to 102 are received signals of the respective antenna elements.

1 N

The signals are placed in close proximity so that they have a correlation. Here, the receiving array antenna 101 is a receiving antenna element as long as N receiving antenna elements 102 to 102 are arranged close to each other. There is no limit to the number of children and the way they are arranged. Examples of the arrangement method include a circular arrangement and a linear arrangement at half-wave intervals of the carrier wave.

[0008] Each signal received by the N receiving antenna elements 102 to 102 includes a desired user

1 N

The signal component, a plurality of interference signal components, and thermal noise are included. Furthermore, there are a plurality of multipath components for each desired user signal component and interference signal component. Usually, these signal components come from different directions. Therefore, there are a plurality of combinations of the direction of arrival of the desired user signal and the path delay.

[0009] Antenna 1 wireless receiver 103 to antenna N wireless receiver 103 is a low noise amplifier, band

1 N

It consists of a band limiting filter, mixer, local oscillator, AGC (Auto Gain Controller), quadrature detector, low-pass filter, analog / digital converter, etc. Here, taking the antenna 1 radio receiver 103 as an example, the antenna 1 radio receiver 103

1 1

Child 102

1 input is used for input signal amplification, radio frequency to baseband frequency conversion, quadrature detection, analog Z digital conversion, etc.

1 User Outputs to L demodulation block 204.

Shi

[0010] User 1 demodulation block 204 to user L demodulation block 204 are directions of arrival.

1 Z path delay detection unit 105, path reception quality calculation unit 106, arrival direction Z path delay detection unit 208, and demodulation processing unit 209.

In the following, the user 1 demodulation block 204 will be described as an example.

1

[0012] User 1 demodulation block 204 includes antenna 1 radio reception unit 103 to antenna N radio reception.

1 1

Using the output of section 103 as input, user 1 total received quality and user 1 received data are output.

N

Direction of arrival Z path delay detection unit 105 includes antenna 1 radio reception unit 103 to antenna N radio.

1

The output of receiver 103 is used as input, and the arrival of user 1 signal for each input signal

N

The direction and path delay are detected, and the user 1 signal in the direction of arrival Z path delay is calculated. Then, arrival direction Z path delay detection section 105 outputs the detected combination of arrival direction and path delay and user 1 signal in the arrival direction Z path delay to path reception quality calculation section 106.

Here, user 1 signal to user L signal are multiplexed on each input signal, and multipath components of each user signal due to propagation delay are multiplexed. Usually these The signal components come from different directions. Examples of restrictions on user signal multiplexing methods include TDMA (Time Division Multiple Access) and CDMA (Code Division Multiple Access). There are no limitations on the method of separating the multiplexed user signals, the method of detecting the arrival direction and path delay of multipath components, and the number of pairs of arrival direction and path delay detected. Examples of direction-of-arrival detection methods include the MUSIC method and the ESPRIT method.

Direction-of-arrival Z-path delay detection section 105 can also detect the direction of arrival and the path delay using only known symbols (pilot symbols, etc.) of user 1 signal.

[0016] Path reception quality calculation section 106 receives the output of arrival direction Z path delay detection section 105 as input, and measures the path reception quality of user 1 signal in the set of input arrival direction and path delay. Then, path reception quality calculation section 106 outputs the set of arrival direction and path delay and the measured path reception quality of user 1 signal to arrival direction Z path delay selection section 208. Here, there are no restrictions on the reception quality index and measurement method to be measured. Examples of received quality indicators include received power and SIR (Signal to Interference Ratio).

Direction of Arrival Z-path delay selection section 208 receives as input the arrival direction and path delay set output from path reception quality calculation section 106 and the measured path reception quality of user 1 signal. Based on the path reception quality of the user 1 signal in the path delay set, the arrival direction and path delay set to be used for demodulation are selected. Direction of arrival Z path delay selection unit

208 outputs to the demodulation processing unit 209 the selected arrival direction / path delay pair and the path reception quality of the user 1 signal in the arrival direction / path delay pair. The arrival direction Z path delay selection unit 208 calculates and outputs the user 1 total reception quality from the selected arrival direction and path delay pair and the path reception quality of the user 1 signal in the arrival direction and path delay.

[0018] Here, as an example in which there is no restriction on the method of selecting the combination of arrival direction and path delay used for demodulation, there is a method of selecting the top A sets (A is an integer of 1 or more) with excellent reception quality. One method is to select up to B pairs (B is an integer greater than or equal to 1) that satisfy the received quality criteria.

[0019] Demodulation processing section 209 is a path reception product of user 1 signal in the set of arrival direction and path delay that is the output of arrival direction Z path delay selection section 208, and the set of arrival direction and path delay. Quality and antenna 1 The output of wireless receiver 103 to antenna N

1 N

The signal beam is formed and demodulated, and user 1 received data is output.

[0020] Here, there are no restrictions on the number and shape of reception beams to be formed and the method of forming the reception beam. Examples of the shape of the reception beam are orthogonal multi-beams, and examples of the method of forming the reception beam are digital. There is a technique (digital beamforming) that calculates the sum by multiplying each input signal by a fixed complex beam weight by calculation.

The conventional adaptive antenna receiving apparatus shown in FIG. 1 selects a set of arrival directions and delay paths with excellent reception quality for a desired user and forms a received beam, thereby forming a desired signal direction. In contrast, it is possible to form a beam that increases the reception gain and decreases the reception gain in the other directions.

However, the conventional adaptive antenna receiver as shown in FIG. 1 has a problem that reception characteristics deteriorate when there is a correlation between paths in a multipath environment. The reason is that, since the combination of the arrival direction and the path delay is selected based only on the reception quality, the optimum combination of the arrival direction and the path delay cannot be selected when there is a correlation between the paths. .

[0023] Under a multipath environment, the user signal component includes a plurality of multipath components.

Usually, these signal components come from different directions. Therefore, multiple pairs of arrival directions and path delays are detected.

[0024] Here, in the conventional adaptive antenna reception apparatus, the combination of the arrival direction and the path delay with excellent reception quality is selected as the combination of the arrival direction and the path delay used for demodulation, but two or more pairs are selected. The total received quality may be less than the sum of the pure path received quality if there is a correlation between the selected paths. The truly optimal combination of direction of arrival and path delay is the one with the highest total reception quality in consideration of the correlation between the nodes, and conventional adaptive antenna receivers have an inter-path environment in a multipath environment. When there is a correlation, it is impossible to select the optimal combination of direction of arrival and path delay.

[0025] Problems with this conventional adaptive antenna receiver will be described below using a specific example.

[0026] For example, the arrival direction Z-path delay selection unit 208 in the conventional adaptive antenna reception apparatus Suppose that the top two (A, B) are selected for the following four arrival direction and path delay pairs.

[0027] (A) Reception quality: 10

(B) Receive quality: 8

(C) Receive quality: 5

(D) Receive quality: 1

Here, it is assumed that the correlation between the A and B paths is very large, and the sum of the received quality of A and B is only about 10 + 3. Also, the correlation between the nose of A and C is small. Assuming that the sum of the received quality of A and C is about S 10 + 4, a pair of arrival direction and path delay is used for demodulation. Is superior in total reception quality (10 + 3 <10 + 4), and the conventional adaptive antenna receiving apparatus cannot select a truly optimal combination of arrival direction and path delay.

[0028] In the conventional adaptive antenna receiving apparatus described above, a combination of the arrival direction and the path delay is selected using only the reception quality as a selection criterion. Therefore, the optimal arrival direction when there is a correlation between paths in a multipath environment. It was impossible to select a combination of path delay and excellent reception characteristics, and there was a problem.

Disclosure of the invention

[0029] An object of the present invention is to provide an adaptive antenna receiving apparatus having excellent reception characteristics by selecting an optimal combination of arrival direction and path delay even when there is a correlation between paths in a multipath environment. There is.

In order to achieve the above object, the adaptive antenna receiving apparatus of the present invention corresponds to a receiving array antenna in which N receiving antenna elements (N is an integer of 1 or more) are arranged, and to each receiving antenna element. N radio reception units and L (L is an integer of 1 or more) user demodulation blocks,

The user demodulation block has correction means corresponding to the correlation between paths when calculating the sum of reception qualities of user signals in a set of a plurality of arrival directions and path delays.

[0031] The user demodulation block includes:

A direction-of-arrival Z-path delay detection unit that detects a set of the arrival direction and path delay of each path from the outputs of the N radio reception units; A plurality of arrival direction / path delay pairs that are outputs of the arrival direction z-path delay detection unit, and a user signal power in the arrival direction / path delay pair, a path reception quality calculation unit that calculates a path reception quality of each path; ,

A plurality of arrival direction and path delay pairs, which are outputs of the arrival direction Z path delay detection unit, and a user signal power in the arrival direction and path delay pair, and an inter-path correlation calculation unit that calculates a correlation between each path;

A direction-of-arrival Z-path delay selection unit that selects a set of arrival direction and path delay used for demodulation from the reception quality of each path and the correlation between the paths, and calculates the total reception quality of the user signal; and the direction-of-arrival Z-path It is configured by a demodulation processing unit that performs reception beam forming and demodulation using a set of arrival direction and path delay notified from the delay selection unit, reception quality of each path, and correlation between the paths.

[0032] The adaptive antenna reception apparatus of the present invention calculates inter-path correlation for each of a plurality of pairs of arrival directions and path delays, and calculates the sum of path reception qualities for the combination of arrival directions and path delays. In order to perform correction according to the correlation between paths when performing this, a correlation calculation section between paths is provided.

Therefore, in the present invention, the correlation between paths is calculated when calculating the correlation between paths for each of a plurality of pairs of arrival directions and path delays, and calculating the sum of the path reception qualities for the pairs of arrival directions and path delays. Correction according to is performed. Therefore, the combination of arrival direction and path delay with the best total reception quality is selected, and even when there is correlation between paths in a multipath environment, the optimal combination of arrival direction and path delay can be selected. it can. Therefore, it is possible to provide an adaptive antenna reception device that has superior reception characteristics as compared with a conventional adaptive antenna reception device.

[0034] As described above, in the present invention, the correlation between paths is calculated for each of a plurality of pairs of arrival directions and path delays, and the sum of the received path quality for the combination of arrival directions and path delays is calculated. Optimum even when there is a correlation between paths in a multipath environment because it performs correction according to the correlation between paths and selects the combination of arrival direction and path delay with the best total reception quality. Selectable combinations of arrival directions and path delays to achieve excellent reception characteristics The effect that it becomes possible can be acquired.

Brief Description of Drawings

FIG. 1 is a block diagram showing a configuration of a conventional adaptive antenna receiving apparatus.

FIG. 2 is a block diagram showing a configuration of an adaptive antenna receiver according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 2 is a block diagram showing a configuration of the adaptive antenna reception apparatus according to the embodiment of the present invention. In FIG. 2, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.

[0037] Also in this embodiment, similarly to the conventional adaptive antenna receiving apparatus shown in Fig. 1, the number of users L (L is an integer of 1 or more) and the number of receiving antenna elements are N (N is 1 or more). (Integer), and the number of receiving beams is M (M is an integer of 1 or more).

[0038] Referring to FIG. 2, the adaptive antenna receiving apparatus of the present embodiment includes a receiving array antenna 1011, and an antenna 1 radio receiving unit 103 to an antenna N radio corresponding to each receiving antenna element.

1

The receiver 103 is composed of a user 1 demodulation block 104 to a user L demodulation block 104.

N 1 L

It is.

[0039] The adaptive antenna receiving apparatus of the present embodiment is different from the conventional adaptive antenna receiving apparatus shown in FIG.

1 L

The key block 104 is replaced with the user L demodulation block 104.

1 L

[0040] User 1 demodulation block 104 to user L demodulation block 104 are directions of arrival.

L Z path delay

1

The detection unit 105 includes a path reception quality calculation unit 106, an inter-path correlation calculation unit 107, an arrival direction Z path delay detection unit 108, and a demodulation processing unit 109.

[0041] The user 1 demodulation block 104 to the user L demodulation block 104 in this embodiment are shown in FIG.

1 L

User 1 in the conventional adaptive antenna receiver shown in FIG.

1 The L-demodulation block 204 has an inter-path correlation calculation unit 107 added.

The Z path delay selection unit 208 and the demodulation processing unit 209 are replaced with the arrival direction Z path delay selection unit 108 and the demodulation processing unit 109, respectively. In the following, the user 1 demodulation block 104 will be described as an example.

1

[0043] User 1 demodulation block 104 includes antenna 1 wireless reception unit 103 to antenna N wireless reception.

1 1

N

1

N

The direction and path delay are detected, and the user 1 signal in the direction of arrival Z path delay is calculated. Then, the arrival direction Z path delay detection unit 105 in this embodiment uses the detected arrival direction and path delay pair and the user 1 signal in the arrival direction Z path delay as the path reception quality calculation unit 106 and the correlation between paths. Output to the calculation unit 107.

[0045] Inter-path correlation calculation section 107 receives the output of arrival direction Z path delay detection section 105 as input, and calculates correlations between paths in all combinations of the input arrival direction and path delay pairs. Then, the inter-path correlation calculation unit 107 outputs to the arrival direction Z path delay selection unit 108 the combinations of the arrival direction and path delay and the correlations between the paths in all combinations of the calculated arrival direction and path delay. To do. Here, there is no limit to the method for calculating the correlation between paths. An example of a method for calculating a correlation between paths is a method of calculating an inner product of channel estimation values in a pair of two arrival directions and path delays.

[0046] For example, when a set of arrival directions and path delays for three paths (A), (B), and (C) is input, the inter-path correlation calculation unit 107 calculates the following three types of paths: Is calculated.

[0047] (A) —Correlation between paths (B)

(B) —Correlation between paths (C)

(C) Correlation between paths in (A)

Direction-of-arrival Z-path delay selection unit 108 is a set of arrival direction and path delay that is the output of path reception quality calculation unit 106, path reception quality of user 1 signal in the combination of arrival direction and path delay, and correlation between paths. The input from the calculation unit 107 is the arrival direction / path delay pair and the correlation between paths in all combinations of the arrival direction / path delay pair, and the user 1 in each arrival direction / path delay pair 1 Based on the signal path reception quality and the correlation between the paths, the combination of arrival direction and path delay used for demodulation is selected. Then, the arrival direction Z path delay selection unit 108 selects the set of arrival direction and path delay, and the arrival direction and path. The correlation between the paths in the combination of the path reception quality of the user 1 signal and the selected arrival direction and path delay combination in the delay group is output to the demodulation processing unit 109. In addition, the arrival direction Z path delay selection unit 108 combines the combination of the selected arrival direction and path delay, the path reception quality of the user 1 signal in the combination of arrival direction and path delay, and the combination of the selected arrival direction and path delay. Correlation between paths according to user 1 Calculate and output total received quality

[0048] Here, as an index of the user 1 total reception quality, there is a method using the sum of reception powers of user signals in a selected combination of arrival direction and path delay. Further, the present invention also includes a method of using the sum of SIRs of user signals in a selected set of arrival direction and path delay as an index of user 1 total received quality.

Direction of arrival Z-path delay selection section 108 selects a pair of arrival direction and path delay to be used for demodulation based on the path reception quality of user 1 signal and the correlation between paths in each pair of arrival direction and path delay. In this case, R (R is an integer of 1 or more) arrival direction / path delay pairs that maximize the total received quality of the user signal among all combinations of arrival direction / path delay pairs. select.

[0050] At that time, the arrival direction Z-path delay selection unit 108 performs correction to reduce the contribution to the total reception quality as the correlation between the paths increases in all combinations of the arrival direction and the path delay. . Here, there is no limitation on the correction method.

[0051] Direction of arrival Z path delay selection section 108 selects a combination of direction of arrival and path delay used for demodulation based on the path reception quality of user 1 signal and the correlation between paths in each pair of arrival direction and path delay. In order to simplify the calculation, based on a certain standard! /, The maximum number of combinations of arrival direction and path delay selected from the combination of S ( A method of selecting a set of arrival directions and path delays (S is an integer of 1 or more) is also included in the present invention.

[0052] Here, based on a certain criterion, as the combination of the arrival direction and path delay selected in advance, the top P number (P is 1 or more) that has excellent user signal reception quality in the combination of arrival direction and path delay. (Integer integer) and the path delay pair are used.

[0053] Also, based on a certain criterion, the direction of arrival is set as a set of the direction of arrival and path delay selected. There is a method that uses a maximum of Q arrival direction and path delay pairs (Q is an integer of 1 or more) that satisfies the reception quality standard for user signal reception quality in the direction and path delay pair.

[0054] Direction of arrival Z path delay selection unit 108 maximizes the total received quality of the user signal by using only the combination of the direction of arrival and the path delay selected based on a certain criterion. When selecting an arrival direction and path delay of the above integers, correction is performed so that the contribution to the total reception quality decreases as the correlation between paths increases. Here, there is no limit to the correction method.

[0055] Demodulation processing section 109 receives the direction of arrival and path delay that are the output of arrival direction Z path delay selection section 108, and the path reception quality and direction of arrival of user 1 signal in the set of arrival direction and path delay. The correlation between paths in the combination of path delays and the output of antenna 1 wireless receiver 103 to antenna N wireless receiver 103 are used as inputs to form a received beam.

1 N

And the demodulating process is performed, and the user 1 received data is output.

[0056] Here, there are no restrictions on the number and shape of the reception beams to be formed and the method of forming the reception beam. Examples of the shape of the reception beam are orthogonal multi-beams, and examples of the method of forming the reception beam are digital. There is a technique (digital beamforming) that calculates the sum by multiplying each input signal by a fixed complex beam weight by calculation.

[0057] Further, when combining a user 1 signal of a plurality of pairs of arrival directions and path delays in demodulation processing, a method using correction according to the correlation between paths in the combination of the arrival direction and path delay pairs Are also included in the present invention. Specifically, correction is performed to reduce the weighting coefficient as the correlation between paths increases.

[0058] As described above, in the adaptive antenna receiving apparatus of the present embodiment, the user 1 demodulation block 104 is provided with the inter-path correlation detection unit 107, so that a plurality of arrival directions and paths are detected.

1

When calculating the sum of the reception quality of the user signals in the set of delays, a correction means corresponding to the correlation between the paths is provided.

In the adaptive antenna receiving apparatus of this embodiment, when calculating the correlation between paths for each of a plurality of pairs of arrival directions and path delays, and calculating the sum of the path reception qualities for the pairs of arrival directions and path delays. Is corrected according to the correlation between paths, and the arrival of the best total reception quality is achieved. Since the combination of direction and path delay is selected, the optimum combination of direction of arrival and path delay can be selected even when there is a correlation between paths in a multipath environment. Therefore, according to the adaptive antenna receiving apparatus of this embodiment, it is possible to obtain excellent reception characteristics as compared with the conventional adaptive antenna receiving apparatus.

In the adaptive antenna receiving apparatus of the present embodiment, the description has been given using an example for explaining the present invention. However, the present invention is not limited to the radio transmission Z demodulation method, the number of receiving antenna elements, the configuration of the radio receiving unit, and the demodulation processing unit. Configuration, the number of users receiving simultaneously, and the power of multipaths per user receiving simultaneously The present invention is not limited to the one used in this embodiment.

Claims

The scope of the claims

[1] A receiving array antenna having N receiving antenna elements (N is an integer of 1 or more), N radio receiving units corresponding to the receiving antenna elements, and S (L is an integer of 1 or more) ) User demodulation block

The adaptive demodulator receiving apparatus according to claim 1, wherein the user demodulating block has a correcting means according to a correlation between paths when calculating a sum of reception qualities of user signals in a set of a plurality of arrival directions and path delays.

[2] The user demodulation block is:

A direction-of-arrival Z-path delay detection unit that detects a set of the arrival direction and path delay of each path from the outputs of the N radio reception units;

A plurality of arrival direction and path delay pairs that are outputs of the arrival direction Z path delay detection unit, and a user signal power in the combination of the arrival direction and path delay, a path reception quality calculation unit that calculates a path reception quality of each path; ,

A direction-of-arrival Z-path delay selection unit that selects a set of arrival direction and path delay used for demodulation from the reception quality of each path and the correlation between the paths, and calculates the total reception quality of the user signal; and the direction-of-arrival Z-path 2. The demodulation processing unit configured to perform reception beam forming and demodulation using a set of arrival direction and path delay notified from a delay selection unit, reception quality of each path, and correlation between each path. The adaptive antenna receiver described.

[3] In the path reception quality calculation unit, the reception quality of each node is also calculated by the combination of the arrival direction and path delay, which are the outputs of the N radio reception units, and the user signal power in the arrival direction and path delay group. And the arrival direction Z path delay selection unit selects a combination of the reception direction of each path and the correlation power between the paths, and the arrival direction and path delay used for demodulation, and calculates the total reception quality of the user signal. 3. The adaptive antenna receiver according to claim 2, wherein received power is used as an indicator of received quality, and total received power is used as total received quality. Place.

[4] The path reception quality calculation unit calculates the reception signal quality of each path for each set of arrival direction and path delay, which are outputs of the N radio reception units, and user signal power in the arrival direction and path delay set. And the arrival direction Z-path delay selection unit selects the combination of the arrival direction and the path delay used for demodulation from the reception quality of each path and the correlation between the paths, and calculates the total reception quality of the user signal. The adaptive antenna receiver according to claim 2, wherein SIR is used as an indicator of reception quality, and total SIR is used as total reception quality.

[5] The arrival direction Z-path delay selection unit selects a combination of the arrival direction and the path delay used for demodulation from the reception quality of each path and the correlation between the paths. The adaptive antenna receiving apparatus according to claim 2, wherein a set of R arrival directions and path delays (R is an integer equal to or greater than 1) that maximizes the total reception quality of user signals is selected.

[6] The arrival direction Z-path delay selection unit sets a combination of R arrival directions and path delays (R is an integer of 1 or more) that maximizes the total reception quality of the user signal among the combinations of the paths. 6. The adaptive antenna receiving apparatus according to claim 5, wherein, when selecting, the correction is performed such that the larger the correlation between the paths is, the smaller the contribution to the total reception quality is.

[7] The arrival direction Z-path delay selection unit selects a set of arrival direction and path delay to be used for demodulation from the reception quality of each path and the correlation between the paths, based on a certain criterion. Claims that select R arrival directions and path delays (R is an integer equal to or greater than 1) that maximizes the total received quality of user signals from combinations of only arrival direction and path delay pairs selected in V. 2. The adaptive antenna receiver according to 2.

[8] The arrival direction Z-path delay selection unit, based on the predetermined criteria, determines the top P number (P is 1 or more) that has excellent user signal reception quality as a combination of the arrival direction and the path delay selected. 8. The adaptive antenna receiving apparatus according to claim 7, wherein a set of an arrival direction and a path delay is selected.

[9] The direction-of-arrival Z path delay selection unit is configured to set a maximum of Q number of user signal reception qualities satisfying a certain reception quality criterion as a set of the arrival direction and path delay selected based on the certain criterion. 8. The adaptive antenna receiver according to claim 7, wherein a pair of arrival direction and path delay up to (Q is an integer of 1 or more) is selected.

[10] The arrival direction The Z-path delay selection unit selects the arrival method selected based on the predetermined criterion. The central force of only the combination of direction and path delay also maximizes the total received quality of the user signal. When selecting R (R is an integer of 1 or more) arrival direction and path delay pairs, 8. The adaptive antenna receiver according to claim 7, wherein correction is performed such that the larger the correlation is, the smaller the contribution to the total reception quality is.