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Radio receiver and radio receiving method

A wireless receiving device and wireless receiving technology, applied in the directions of radio transmission system, diversity/multi-antenna system, space transmit diversity, etc., can solve the problems of inability to obtain diversity gain, inability to improve reception characteristics, etc.

Inactive Publication Date: 2002-11-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Therefore, there is a problem that diversity gain cannot be obtained and reception characteristics cannot be improved when simply performing in-phase addition on the pilot channel signal for diversity transmission using the above-mentioned conventional radio receiving apparatus.

Method used

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  • Radio receiver and radio receiving method
  • Radio receiver and radio receiving method
  • Radio receiver and radio receiving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The wireless receiving apparatus according to Embodiment 1 of the present invention separates the received pilot channel signal into each antenna and performs in-phase addition.

[0037] Figure 4 It is a block diagram of main parts showing a schematic configuration of the radio receiving apparatus according to Embodiment 1 of the present invention. exist Figure 4 Among them, the radio receiving unit 102 performs predetermined radio processing (down-conversion, A / D conversion, etc.) on the signal received via the antenna 101 . The correlation value calculation unit 103 performs despreading processing on the pilot channel signal. The switching control unit 105 performs switching control of the switch 104 .

[0038] Delay unit 106 delays the pilot channel signal by 1 symbol time. Adder 107 adds the pilot channel signal delayed by 1 symbol time to the pilot channel signal. Subtractor 108 subtracts the pilot channel signal delayed by one symbol time from the pilot cha...

Embodiment 2

[0067] The wireless receiving device of Embodiment 2 of the present invention is to transmit the correlation value D corresponding to +A sent from the antenna 2 plus Between the in-phase addition, the correlation value D corresponding to -A sent from antenna 2 minus Between the same phase addition.

[0068] Figure 6 It is a block diagram of main parts showing a schematic configuration of a wireless receiving apparatus according to Embodiment 2 of the present invention. In addition, the same reference numerals are assigned to the same structures as in the first embodiment, and detailed descriptions thereof are omitted.

[0069] exist Figure 6 Among them, the switching control unit 201 performs switching control of the switch 202 and the switch 203 . Memory 204 and Adder 206 enable D plus Between the same phase addition. On the other hand, memory 205 and adder 206 make D minus Between the same phase addition. The square addition part 207 will be D plus and D minus Sq...

Embodiment 3

[0079] The wireless receiving device of Embodiment 3 of the present invention switches the correlation value D corresponding to +A transmitted from the antenna 2 at each specified unit (for example, each time slot). plus Between the in-phase addition and the correlation value D corresponding to -A sent from antenna 2 minus In-phase addition between.

[0080] Figure 7 It is a block diagram of main parts showing a schematic configuration of a wireless receiving apparatus according to Embodiment 3 of the present invention. In addition, the same reference numerals are assigned to the same structures as in the first embodiment, and detailed description thereof will be omitted.

[0081] exist Figure 7 Among them, the reception symbol control unit 301 controls the radio reception unit 102 so that only designated pilot symbols are received. That is, the radio receiving unit 102 only performs an operation of receiving a designated pilot symbol.

[0082] The correlation value cal...

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PUM

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Abstract

The switch 202 and the switch 203 are switched and controlled by the switching control unit 201, and the symbol Dplus containing only +A is distributed and output to the memory 204 side, and the symbol Dminus containing -A is distributed and output to the memory 205 side, and the memory 204 and the The adder 206 performs the in-phase addition between Dplus, the memory 205 and the adder 206 perform the in-phase addition between Dminus, and the square addition part 207 squares the Dplus after the in-phase addition and the Dminus after the in-phase addition, respectively. add up.

Description

technical field [0001] The present invention relates to a wireless receiving device and a wireless receiving method, in particular to a wireless receiving device and a wireless receiving method used in a wireless communication system using multiple antennas for diversity transmission. Background technique [0002] In a mobile communication system, in order to improve the reception characteristics of a mobile station apparatus, a base station apparatus performs transmit diversity for transmission of a common pilot symbol signal. figure 1 It is a diagram showing a case where a base station device transmits a common pilot symbol to a mobile station device by transmit diversity using two antennas. [0003] In the mobile communication standard 3G TS 25.211 version 3.1.0 5.3.3.1 (page 21), transmission patterns of pilot symbols transmitted from each antenna are specified. figure 2 It is a diagram showing a transmission pattern of a pilot symbol specifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/7115H04B7/02H04B7/06H04B7/08
CPCH04B1/7117H04B7/06H04B7/084H04B2201/70701H04B7/00
Inventor 相原弘一铃木秀俊今泉贤惣门淳二
Owner PANASONIC CORP
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