有限反馈MIMO下行系统中基于黄金码的传输方案与解码方法

doi:10.11959/j.issn.1000-0801.2018262

Abstract

Abstract:

For a MIMO downlink system with finite-bit feedback,combined with the Golden code and the precoding technology,a new precoding design criterion and its related codeword selection method,transmissionschemes and corresponding low complexity decoding methods were proposed.In fact,based on fully utilizing the characteristics that the Golden code could overcome the channel depth fading,a double precoding matrix was constructed as transmission signals by using the selected precoding codeword,so that the decoding complexity could be reduced to linear.In the meantime,a joint ML and MMSE decoding method was proposed for the traditional transmission scheme,which could dynamically adjust the decoding complexity based on a threshold.The numerical simulation results confirm the superiority of the proposed schemes and methods.

Key words: MIMO system, precoding, Golden code, finite-bit feedback

CLC Number:

TN914

Sisi ZHENG,Haiquan WANG,Guobin LI,Tanming DAI. Golden code based transmission schemes and decoding methods for MIMO downlink system with finite-bit feedback[J]. Telecommunications Science, 2018, 34(11): 31-40.

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传输方案	单个符号的解码复杂度
黄金码的解码方法	M⁴/4
方案1	M
方案2	M
r=2时传输方案	根据门限值Λ的调整而定

Golden code based transmission schemes and decoding methods for MIMO downlink system with finite-bit feedback

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