电信科学 ›› 2021, Vol. 37 ›› Issue (4): 46-53.doi: 10.11959/j.issn.1000-0801.2021054

• 研究与开发 • 上一篇    下一篇

非正交多址接入无线能量采集协作系统

金小萍1, 吴青1, 翟文超1, 包建荣2   

  1. 1 中国计量大学信息工程学院，浙江省电磁波信息技术与计量检测重点实验室，浙江 杭州 310018
    2 杭州电子科技大学信息工程学院，浙江 杭州 310018
  • 修回日期:2021-03-15 出版日期:2021-04-20 发布日期:2021-04-01
  • 作者简介:金小萍（1978- ），女，中国计量大学信息工程学院副教授，主要研究方向为MIMO系统与协作通信系统中检测技术、空间调制系统信号架构和检测技术等
    吴青（1995- ），女，中国计量大学信息工程学院硕士生，主要研究方向为索引调制技术、非正交多址接入技术以及空间调制系统信号架构和检测技术等
    翟文超（1988- ），男，博士，中国计量大学信息工程学院讲师，主要研究方向为SM、IRS、MIMO等无线通信技术
    包建荣（1978- ），男，杭州电子科技大学教授、博士生导师，主要研究方向为空间无线通信、通信信号处理与自主无线电等
  • 基金资助:
    浙江省自然科学基金资助项目(LY17F010012);浙江省教育厅科研项目(Y201840047);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);国家级大学生创新创业训练计划项目(201810356030)

Non-orthogonal multiple access wireless energy harvesting cooperative system

Xiaoping JIN1, Qing WU1, Wenchao ZHAI1, Jianrong BAO2   

  1. 1 Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China
    2 College of Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
  • Revised:2021-03-15 Online:2021-04-20 Published:2021-04-01
  • Supported by:
    Zhejiang Provincial Natural Science Foundation of China(LY17F010012);Foundation of Zhejiang Provincial Educational Committee(Y201840047);Open Project Funding of the Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province(2019KF0004);National Students’ Platform for Innovation and Entrepreneurship Training Program(201810356030)

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摘要：

近年，非正交多址接入（non-orthogonal multiple access，NOMA）技术作为一种应用于5G无线网络的多址接入技术，引起了人们的广泛关注。为了提高NOMA技术的频谱效率、覆盖范围和抗噪性能，并降低系统的能耗，设计了一种基于正交索引调制多址接入（quadrature index modulation multiple access，QIMMA）技术的无线携能（simultaneous wireless information and power transfer，SWIPT）协作网络上行NOMA传输系统，记为协作QIMMA-SWIPT。具体来说，多个远端用户组成一个QIMMA系统，然后通过协作中继的译码转发拓展系统的覆盖范围，并在中继端采用SWIPT技术以便信息在译码的同时进行能量的采集，降低系统的能耗。详细推导了QIMMA-SWIPT系统平均误码率的理论上界，并在频谱效率一定的情况下通过模拟仿真对比分析，得出协作QIMMA-SWIPT系统的误码率性能优于协作IMMA-SWIPT和SCMA-SWIPT系统的结论。此外，深入研究了功率切割因子和信源到中继的距离对系统误码性能的影响。

关键词: 无线携能, 非正交多址接入, 功率切割, 索引调制

Abstract:

Non-orthogonal multiple access (NOMA) has recently attracted wide attention as a promising multiple access technology adopted in 5G cellular networks.In order to improve the spectrum efficiency, coverage and anti-noise performance of NOMA technology, while reduce the energy consumption of the system, a simultaneous wireless information and power transfer (SWIPT) cooperative network uplink NOMA transmission system based on orthogonal index modulation multiple access (IMMA) technology was designed, hereafter was denoted as QIMMA-SWIPT.Specifically, the QIMMA system was formed by multiple remote users, and it improved the spectrum efficiency and anti-noise performance as well as expanded the communication coverage and reduced the energy consumption of the system by decoding and forwarding relay cooperative transmission with SWIPT technology.The theoretical upper bound of the average bit error rate of QIMMA-SWIPT was derived.Simulation and analysis demonstrate that, under the same spectrum efficiency, the bit error rate performance of the cooperative QIMMA-SWIPT system is better than that of the cooperative IMMA-SWIPT and SCMA-SWIPT systems.In addition, the effects of power cut factor and source-to-relay distance on bit error performance were also deeply analyzed.

Key words: SWIPT, non-orthogonal multiple access, power-splitting, index modulation

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