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A signal detection method and device applied to a multi-input multi-output system

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

Active Publication Date: 2017-09-29
BEIJING UNIV OF POSTS & TELECOMM +1
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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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  • A signal detection method and device applied to a 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 As shown, it mainly includes the following steps:

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

[0051]Wherein, the above-mentioned parameter values ​​related to the reliability of data transmission may be, but not limited to, the value of the signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) of the data streams transmitted by different transmitting antennas at the receiving end, the mean square error ( Mean Squared Error, MSE) value or Bit Error Rate (Bit Error, BER) value. ...

Embodiment 2

[0147] Embodiment 2 provides a signal detection device applied to a multiple-input multiple-output system 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 specific introduction of these two functional units is 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 parameter values ​​related to the reliability of data transmission. Wherein, the set of complex integer matrices 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 received signal, the detec...

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Abstract

The present application discloses a signal detection method 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 method includes: selecting a complex integer matrix from a set of complex integer matrices according to parameter values ​​related to the reliability of data transmission; determining the estimated value of the transmitted data stream according to the received signal, the detection matrix and the selected complex integer matrix. The application also discloses a signal detection device applied to a multiple-input multiple-output system.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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