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A signal detection method and device for a large-scale multiple-input multiple-output system

A signal detection, multi-input technology, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as high computational complexity, GS and SOR iterative detection algorithms cannot perform parallel computing, etc., to improve convergence. Speed, reduce the computational complexity of detection, and facilitate the realization of the effect

Active Publication Date: 2020-06-19
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a signal detection method and device for a large-scale multiple-input multiple-output system, so as to solve the traditional linear detection algorithm in the prior art with high computational complexity and the inability of GS and SOR iterative detection algorithms. Problems with parallel computing

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  • A signal detection method and device for a large-scale multiple-input multiple-output system
  • A signal detection method and device for a large-scale multiple-input multiple-output system
  • A signal detection method and device for a large-scale multiple-input multiple-output system

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Embodiment 1

[0046] Such as figure 1 As shown, the signal detection method of the large-scale MIMO system provided by the embodiment of the present invention includes:

[0047] S101. Obtain the channel matrix of the large-scale MIMO uplink system and the received signal at the base station side;

[0048] S102. Perform matched filtering on the acquired channel matrix and the received signal to obtain a matched filter output and a minimum mean square error filter matrix of the received signal;

[0049] S103. Construct an iterative format of the transmitted signal according to the obtained matched filter output and the minimum mean square error filter matrix of the received signal;

[0050] S104. Iterate according to the constructed iterative format of the transmitted signal until the preset iteration termination condition is met to end the iteration, and the currently obtained value of the transmitted signal is used as an estimated value of the original transmitted signal.

[0051] The sig...

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Abstract

The invention provides a signal detection method and apparatus of a large-scale multiple-input-multiple-output system. Parallel iterative computation can be executed, and the complexity of detection and computation can be effectively reduced. The method comprises the following steps: obtaining a channel matrix of a large-scale multiple-input-multiple-output uplink system and a receiving signal ofa base station side; performing matching filtering on the obtained channel matrix and the receiving signal to obtain the matching filtering output and a minimum mean square error filtering matrix of the receiving signal; constructing an iterative scheme of a sending signal according to the obtained matching filtering output and the minimum mean square error filtering matrix of the receiving signal; and performing iteration according to the iterative scheme of the sending signal, until preset iteration ending conditions are satisfied, and using the currently obtained value of the sending signalas the estimated value of the original sending signal. The invention relates to the field of wireless communication technology.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a signal detection method and device for a large-scale multiple-input multiple-output system. Background technique [0002] The Massive Multiple-Input Multiple-Output (Massive MIMO) system deploys a large-scale antenna array on the base station side to provide services for multiple user terminals in the same frequency band in the cell at the same time, fully exploring the spatial freedom of the system, Improve the overall utilization of spectrum resources, improve link reliability, increase signal coverage, and provide faster information transmission rates. [0003] Although Massive MIMO has superior performance, applying the Massive MIMO system to actual wireless transmission still faces great challenges, one of which is the realization of signal detection algorithms. With the substantial increase in the number of antennas, the computational complexity of traditi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/08
CPCH04B7/0413H04B7/0854
Inventor 陈月云罗声姚琳杜利平
Owner UNIV OF SCI & TECH BEIJING
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