北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2020, Vol. 43 ›› Issue (4): 120-126.doi: 10.13190/j.jbupt.2019-197

• 研究报告 • 上一篇    

基于正交索引调制多址接入的检测和性能分析

金小萍1, 吴青1, 金宁1, 陈东晓1, 王嘉天2   

  1. 1. 中国计量大学 浙江省电磁波信息技术与计量检测实验室, 杭州 310018;
    2. 中国计量大学 信息工程学院, 杭州 310018
  • 收稿日期:2019-09-17 发布日期:2020-08-15
  • 通讯作者: 金宁(1967-),女,教授,E-mail:jinning1117@cjlu.edu.cn. E-mail:jinning1117@cjlu.edu.cn
  • 作者简介:金小萍(1978-),女,副教授.
  • 基金资助:
    浙江省自然科学基金项目(LY17F010012);浙江省教育厅科研资助项目(Y201840047);国家级大学生创新创业训练计划项目(201810356030);浙江省电磁波信息技术与计量检测重点实验室开放式项目(2019KF0004)

Detection and Performance Analysis Based on Quadrature Index Modulation Multiple Access

JIN Xiao-ping1, WU Qing1, JIN Ning1, CHEN Dong-xiao1, WANG Jia-tian2   

  1. 1. Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, China Jiliang University, Hangzhou 310018, China;
    2. College of Information Engineering, China Jiliang University, Hangzhou 310018, China
  • Received:2019-09-17 Published:2020-08-15

摘要: 为了降低正交索引调制多址接入技术(QIMMA)检测算法的复杂度,提出基于接收端球形译码和基于排序的接收端球形译码2种低复杂度检测方案.通过对时隙组合进行加权排序,以增强检测准确性,并且减少搜索次数,达到降低复杂度的效果.与最大似然检测器相比,新方案可以在无性能损失的情况下使检测复杂度降低三分之一以上.此外,根据QIMMA系统特性,推导出了平均误码率的理论值.仿真结果表明,理论结果在中高信噪比范围内与数值仿真结果近乎一致.

关键词: 索引调制, 上行链路传输, 多址系统, 低复杂度检测算法

Abstract: To reduce the computation complexity of quadrature index modulation multiple access(QIMMA) detection, two low-complexity detection schemes based on receiver sphere decoding and sorting-based sphere decoding are presented. By weighting the combination of time slots, the detection accuracy is enhanced, the number of searches is reduced, and the effect of reducing complexity is achieved. Compared with the maximum likelihood detector, the new scheme can reduce the detection complexity by more than one-third without any performance loss. In addition, analysis of the average bit error rate is derived according to the characteristics of QIMMA system. It ids shown that it coincides very well with their theoretical counterparts in the range of middle and high signal-to-noise ratio.

Key words: index modulation, uplink transmission, multiple access system, low complexity detection algorithm

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