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Signal detection method and device applied to multi-input-multi-output system

A signal detection, multi-output technology, applied in the field of communication, can solve the problems of not being able to achieve bit error rate performance, not being able to achieve optimal bit error rate performance, etc., and achieve the effect of avoiding bit error rate performance

Active Publication Date: 2014-09-03
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Claims
  • Application Information

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Problems solved by technology

[0032] The embodiment of the present application provides a signal detection method applied to a multiple-input multiple-output system to solve the problem in the prior art that using LRA detection for signals cannot achieve optimal bit error rate performance
[0033] The embodiment of the present application also provides a signal detection device applied to a multiple-input multiple-output system to solve the problem in the prior art that using LRA detection for signals cannot achieve optimal bit error rate performance

Method used

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  • Signal detection method and device applied to multi-input-multi-output system
  • Signal detection method and device applied to multi-input-multi-output system
  • Signal detection method and device applied to multi-input-multi-output system

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Embodiment 1

[0049] In order to solve the problem in the prior art that LRA detection for signals cannot achieve optimal bit error rate performance, Embodiment 1 of the present application provides a signal detection method applied to a multiple-input multiple-output system. The specific implementation flow chart of this method is as follows: image 3 It mainly includes the following steps:

[0050] Step 31: Select a complex integer matrix from a set of complex integer matrices according to a parameter value related to the reliability of data transmission.

[0051]Wherein, the above-mentioned parameter values ​​related to the reliability of data transmission may be, but are not limited to, the value of Signal to Interference plus Noise Ratio (SINR) at the receiving end, the mean square error ( The value of Mean Squared Error, MSE) or the value of Bit Error Rate (Bit Error, BER).

[0052] The above complex integer matrix set is composed of complex integer matrices obtained by decomposing ...

Embodiment 2

[0147] Embodiment 2 provides a signal detection device applied to a multiple-input multiple-output system, which is used to solve the problem in the prior art that LRA detection for signals cannot achieve optimal bit error rate performance. The specific structure diagram of the signal detection device is as follows: Figure 4 As shown, a matrix selection unit 41 and a transmission signal determination unit 42 are included. The details of these two functional units are as follows:

[0148] The matrix selection unit 41 is configured to select a complex integer matrix from a set of complex integer matrices according to a parameter value related to the reliability of data transmission. The complex integer matrix set is composed of complex integer matrices obtained by decomposing the channel matrix.

[0149] The transmission signal determination unit 42 is used to determine the estimated value of the transmitted data stream according to the complex integer matrix selected by the ...

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Abstract

The invention discloses a signal detection method applied to a multi-input-multi-output system. The signal detection method is used for solving the problems that the optimal error rate performance cannot be achieved when LRA detection is adopted on signals in the prior art. The method comprises the steps of selecting a complex integer matrix from a complex integer matrix set according to a parameter value related to data transmission reliability, and determining the transmitted estimated value of dataflow according to received signals, detected matrixes and the selected complex integer matrix. The invention further discloses a signal detection device applied to the multi-input-multi-output system.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a signal detection method and device applied to a multiple-input multiple-output system. Background technique [0002] Since the Multiple Input Multiple Output (MIMO) technology can bring both diversity gain and spatial multiplexing gain, it has become a commonly used technology in the fourth generation of mobile communications. [0003] figure 1 Shown is a schematic of MIMO technology. The sender goes through N t root transmit antenna, the data stream After the transmission is sent out, after the spatial channel, it is transmitted by the N at the receiving end. r (N t ≤N r ) is received by the receiving antenna. [0004] On the receiving end, each receive antenna receives the data stream from each transmit antenna. If a received signal y is used to represent the signals received by all the receiving antennas (hereinafter, the signals received by ...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04B7/08
Inventor 赵慧李文芳赵龙王文博吴斌
Owner BEIJING UNIV OF POSTS & TELECOMM
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