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Signal receiving method, device and system in a mimo system

A signal receiving device and technology for signal receiving, applied in diversity/multi-antenna systems, space transmit diversity and other directions, can solve the problems of high detection error probability and overall performance degradation, and achieve reduced decoding complexity, low detection error probability, The effect of improving system performance

Active Publication Date: 2019-02-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a signal receiving method and device in a MIMO system, so as to solve the problem that in the iterative receiving process, the detection error probability of deleting modulation symbols one by one is relatively high, leading to the problem of overall performance degradation

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  • Signal receiving method, device and system in a mimo system
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  • Signal receiving method, device and system in a mimo system

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Embodiment Construction

[0065] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0066] like figure 1 As shown, the MIMO system provided by the embodiment of the present invention includes a MIMO signal receiving device 101 and a MIMO signal sending device 102 .

[0067] like figure 2 As shown, the MIMO signal sending apparatus 102 includes at least a MIMO signal encoding module 201 and a MIMO signal modulation module 202 .

[0068] Wherein, the MIMO signal encoding module 201 is used to encode the transmitted signal.

[0069] Wherein, the MIMO signal modulation module 202 is used for modulating the coded transmission signal.

[0070] Preferably, LDPC is used for encoding. For example, the MIMO signal encoding module 201 performs GF(Q)-LDPC encoding on the transmitted signal, and then maps the encoded LDPC symbol groups to each modulation symbol, wherein a group of LDPC symbols are respe...

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Abstract

The invention discloses a signal receiving method in a MIMO (Multiple-Input Multiple-Output) system, a device and a MIMO system. The signal receiving method in the MIMO system comprises steps: an estimation value of each component of each sending symbol in a to-be-detected sending signal is determined sequentially, and according to the estimation value of each component of the sending symbol, soft output information corresponding to each component is determined respectively; after the soft output information corresponding to each component in each sending symbol is determined, the soft output information corresponding to each component of the sending symbol is outputted; and according to the received soft output information corresponding to each component of the sending symbol, the sending symbol is coded. According to the signal receiving method in the MIMO system provided by the embodiment of the invention, MIMO detection is carried out component by component, and compared with the prior art, the detected error possibility is lower, and the system performance can be effectively improved.

Description

technical field [0001] The present invention relates to the field of multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) communication technology, in particular to a signal receiving method, device and system in a MIMO system. Background technique [0002] The MIMO system uses multiple transmitting antennas and multiple receiving antennas to transmit wireless signals. [0003] A MIMO system includes at least a MIMO transmitter and a MIMO receiver. Wherein, the MIMO transmitter completes the signal sending process, and the MIMO receiver completes the signal receiving process. [0004] MIMO detection is at the heart of the MIMO reception process. Among them, the detection algorithm based on symbol-level soft interference cancellation (Symbol-level Soft interference Cancellation, SLSC) and linear minimum mean square error (LMMSE) filtering (hereinafter referred to as SLSC-LMMSE detection algorithm) is considered to be achievable and has better performance MI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/08
Inventor 戴晓明康绍莉孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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