系统仿真学报 ›› 2019, Vol. 31 ›› Issue (10): 2078-2084.doi: 10.16182/j.issn1004731x.joss.17-0380

• 仿真系统与技术 • 上一篇    下一篇

预编码辅助广义正交空间调制的低复杂度检测

陈发堂, 杨康, 付永莉, 李孟杰   

  1. 重庆市移动通信技术重点实验室,重庆邮电大学,重庆 400065
  • 收稿日期:2017-08-08 修回日期:2017-09-22 出版日期:2019-10-10 发布日期:2019-12-12
  • 作者简介:陈发堂(1965-),男,重庆,硕士,研究员,硕导,研究方向移动通信和TD-LTE系统开发。
  • 基金资助:
    国家科技重大专项项目(2017ZX03001021 -004), 重庆教委科学技术研究项目(KJ1500428), 重庆市基础与前沿研究计划项目(cstc2016jcyjA0.09)

Low-Complexity Signal Detection Algorithm based on PGQSM

Chen Fatang, Yang Kang, Fu Yongli, Li Mengjie   

  1. Chongqing Key Lab of Mobile Communications, CQUPT, Chongqing 400065, China
  • Received:2017-08-08 Revised:2017-09-22 Online:2019-10-10 Published:2019-12-12

摘要: 预编码辅助广义正交空间调制(PGQSM),利用已知的信道状态信息,对正交空间调制(QSM)的同相和正交两路信号分别做预编码处理,以降低接收机进行信号检测的复杂度。同时,针对预编码辅助广义正交空间调制系统的正交性在接收端造成的计算复杂度过高的问题,提出了一种改进的预编码辅助广义正交空间调制低复杂度检测算法。分析和仿真结果表明,该改进的算法可以得到与最大似然检测算法(maximum likelihood,ML)近乎相同的误比特率(BER)性能,同时可以使计算复杂度降低90%以上

关键词: 预编码, 广义正交空间调制, 误比特性能, 最大似然

Abstract: Pre-coding aided Generalized Quadrature Spatial Modulation (PGQSM) uses the known channel state information to perform pre-coding processing on the in-phase and quadrature signals of the quadrature spatial modulation (QSM), so as to reduce the complexity of the receiver for signal detection. At the same time, an improved Pre-coding aided Generalized Quadrature Spatial Modulation low complexity detection algorithm is proposed to solve the problem of the proposed algorithm’s high complexity at the receiver. The results of analysis and simulation show that the proposed algorithm can achieve almost the same BER performance as the maximum likelihood (ML) algorithm with more than 90% complexity reduction.

Key words: Precoding, generalized quadrature spatial modulation, bit error performance, maximum likelihood

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