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A space-time optimization method and system for multiple-input multiple-output MIMO demodulation

An optimization method and multi-output technology, applied in baseband system components, shaping network in transmitter/receiver, etc., can solve the problem of low time and space utilization of DSP chip, improve resource utilization and reduce clock cycle , the effect of reducing economic expenses

Active Publication Date: 2017-06-23
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention provides a space-time optimization method and system for MIMO demodulation of MIMO, which solves the problem of DSP in the 4×4 MIMO demodulation system based on TMS320C66x type multi-core DSP in the prior art. The time and space utilization rate of the chip is not high

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[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0056] figure 1 It shows the flow chart of the space-time optimization method for multiple-input multiple-output MIMO demodulation provided by Embodiment 1 of the present invention, as shown in figure 1 As shown, the space-time optimization method of MIMO demodulation in this embodiment is as follows. This embodiment is based on the 4×4 MIMO dem...

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Abstract

The invention provides an MIMO demodulation space-time optimization method and system. The method comprises the steps that S1, the solution process of carrying out MIMO demodulation on block data N is divided into a weighting matrix module, a data balance module and a soft-decision module; S2, the weighting matrix module is divided into three sub-modules including the matrix conjugate transpose conversion sub-module, the matrix addition sub-module and the matrix multiplication sub-module; S3, the data balance module is divided into two matrix multiplication sub-modules; S4, the soft-decision module is divided into the two sub-modules including the equivalent noise calculation sub-module and the log-likelihood ratio soft information calculation sub-module; S5, MIMO optimized demodulation is carried out on the block data N according to the sub-modules divided in the steps S2 to S4 by adopting a circulation processing mode. The MIMO demodulation space-time optimization method and system solve the problem that the space and time utilization rate of a DSP chip in a 4*4 MIMO demodulation system based on a TMS320C66x type multi-core DSP is low.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a space-time optimization method and system for multiple-input multiple-output MIMO demodulation. Background technique [0002] The invention relates to DSP technology in the field of wireless communication, and the DSP technology is a process of converting real signals in the real world into information that can be processed by a computer. DSP chips have many advantages, such as large-scale integration, good stability, high precision, programmable, and convenient interface integration. In the context of today's digital age, with the rapid development of wireless communication, the use of DSP chips in communication systems has developed rapidly. Although DSP has many advantages, each chip also has time and space limitations. That is, any multi-core DSP chip has a fixed clock cycle and a fixed storage space. The space-time optimization of DSP is to solve the prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
Inventor 张轶凡高谦
Owner BEIJING UNIV OF POSTS & TELECOMM
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