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Power control method based on peri-zero judgment in multi-aerial system

A multi-antenna system, decision feedback technology, applied in the direction of transmission control/equalization, error prevention/detection through diversity reception, etc., can solve the problems that do not involve power control improvement, large feedback amount, etc.

Inactive Publication Date: 2007-02-07
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

According to "International Institute of Electronics and Electrical Engineers Information Theory" (IEEE Transactions on Information Theory, Vol.51, Issue 1, Jan.2005, Page(s): 154-172), in the case that the receiving end fully knows the channel information , the detection performance can be improved by jointly optimizing the transmit preprocessing filter and the receive filter, but the amount of feedback required for transmit preprocessing is large, and it does not involve the improvement of BER by power control

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  • Power control method based on peri-zero judgment in multi-aerial system
  • Power control method based on peri-zero judgment in multi-aerial system
  • Power control method based on peri-zero judgment in multi-aerial system

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Embodiment 1

[0060] This embodiment is applied to the ZF-DFD system of multi-antenna power control. It is assumed that M antennas are used at the transmitting end and N antennas are used at the receiving end, and the signals of multiple transmitting ends are irrelevant; the receiving end calculates the optimized transmission power matrix P, and fed back to the transmitting antenna, by weighting the transmitted signal with the power matrix P; the receiving end performs ZF-DFD, and sequentially detects the signals transmitted by M antennas.

[0061] The system block diagram of the transmitting and receiving structure of the power control method based on zero-forcing decision feedback detection in the multi-antenna system of the present invention is as follows figure 1 As shown: the transmission data 1 is demultiplexed by the transmission baseband processing unit 2, and the power of each antenna transmission signal is adjusted by the power weighting module 3, and the baseband signal is modulat...

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Abstract

The invention relates to a power control method based on zero-approach judgment feedback check, wherein it is characterized in that: under the rule of minimize block error rate, calculating power distribution matrix, via part feedback signal channel that only feedbacks power information, decomposing the multiple between signal channel matrix and the power matrix into one unitary matrix and one upper triangle matrix; using power matrix weighted to send signal, to make the decomposed upper triangle matrix with constant diagonal line, and optimizing the check sequence and check property of zero-approach judgment feedback check, to reduce the average bit error rate and the block error rate. The invention can reduce the complexity, the average bit error rate and block error rate.

Description

Technical field: [0001] The invention belongs to the technical field of multiple-input multiple-output (MIMO) antennas for mobile communications, in particular to zero-forcing decision feedback in a Vertical-Bell Labs Layered Space-Time Processing (V-BLAST) system under a flat Rayleigh (Rayleigh) slow fading channel Detection (ZF-DFD) Multi-antenna transmit power control technology to reduce system block error rate (BLER) and average bit error rate (BER). Background technique: [0002] The V-BLAST transceiver system is an effective method widely studied in the field of mobile communication to improve the transmission rate and spectrum utilization of wireless links. How to correctly detect multi-antenna data at the receiving end is one of the difficulties and key points in MIMO system design. [0003] According to the "International Institute of Electronics and Electrical Engineers Communications Magazine" (IEEE Commun.Magzine, vol.29, No.12, Dec.1991 Page(s): 25-34), maximu...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L1/06
Inventor 邱玲张璇赵昆朱近康
Owner UNIV OF SCI & TECH OF CHINA
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