计算机应用 ›› 2018, Vol. 38 ›› Issue (5): 1458-1462.DOI: 10.11772/j.issn.1001-9081.2017102612

• 网络与通信 • 上一篇    下一篇

二维空码索引调制算法

江治林1, 葛利嘉1,2, 邢峰英1, 杨勤2   

  1. 1. 重庆邮电大学 移动通信技术重庆市重点实验室, 重庆 400065;
    2. 陆军工程大学通信士官学校 应急通信重庆市重点实验室, 重庆 400035
  • 收稿日期:2017-11-03 修回日期:2017-12-13 出版日期:2018-05-10 发布日期:2018-05-24
  • 通讯作者: 江治林
  • 作者简介:江治林(1993-),男,河南新乡人,硕士研究生,主要研究方向:索引调制、高速无线传输;葛利嘉(1957-),男,四川大邑人,博士,主要研究方向:高速无线传输、实时信号处理;邢峰英(1991-),男,山西忻州人,硕士研究生,主要研究方向:索引调制、高速无线传输;杨勤(1982-),男,四川眉山人,讲师,硕士研究生,主要研究方向:高速无线传输、实时信号处理。
  • 基金资助:
    国家自然科学基金资助项目(61271251);重庆市社会事业与民生保障科技创新专项(cstc2017shmsA40002)。

Two-dimensional space code index modulation algorithm

JIANG Zhilin1, GE Lijia1,2, XING Fengying1, YANG Qin2   

  1. 1. Chongqing Key Laboratory of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2. Chongqing Key Laboratory of Emergency Communication, Communication NCO Academy of Army Engineering University, Chongqing 400035, China
  • Received:2017-11-03 Revised:2017-12-13 Online:2018-05-10 Published:2018-05-24
  • Contact: 江治林
  • Supported by:
    This work is partially supported by the National Natural Science Foundation of China (61271251), the Science and Technology Innovation Special Project of Chongqing Social Undertaking and People's Livelihood Security (cstc2017shmsA40002).

摘要: 针对正交空间调制(QSM)提升传输速率时天线的使用数量增加,需要耗费大量资源且实现困难的问题,提出二维空码正交索引调制(SCOIM)。发射端信息比特分别映射为伪随机(PN)码的索引、天线的索引以及调制符号,调制符号的同相部分和正交部分再分别选择激活的PN码进行扩频,并各自通过激活的天线将信号发射出去。分析和仿真结果表明,相同传输速率时,SCOIM比正交空间调制节约至少一半的索引资源且随着传输速率的提升节约效果成倍增加,并且当误码率为10-4时具备约5 dB的性能优势。

关键词: 高速率, 伪随机码, 正交空间调制, 直接序列扩频, 索引调制

Abstract: To deal with the problem that the number of antennas increases when Quadrature Spatial Modulation (QSM) improves the transmission rate, which requires a lot of resources and makes it difficult to achieve, a two-dimensional Space Code Orthogonal Index Modulation (SCOIM) was proposed. The transmitter information bits were mapped to the Pseudo Noise (PN) code index, the antenna index and the modulation symbol respectively. The in-phase part and orthogonal part of the modulation symbol spreaded spectrum through selecting activated PN code respectively, and were transmitted by activated antennas respectively. Analysis and simulation results show that in the comparison experiments with QSM, the index resource of SCOIM can be saved at least half at the same transmission rate and the saving increases exponentially with the increase of transmission rate. What's more, SCOIM has a performance advantage of about 5 dB when the bit error rate is 10-4.

Key words: high data rate, Pseudo Noise (PN) code, Quadrature Spatial Modulation (QSM), direct sequence spread spectrum, index modulation

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