联合信道非相干网络编码调制方法

doi:10.11772/j.issn.1001-9081.2018030591

计算机应用 ›› 2018, Vol. 38 ›› Issue (10): 2955-2959.DOI: 10.11772/j.issn.1001-9081.2018030591

联合信道非相干网络编码调制方法

高枫越^1,2, 王琰^1,2, 李牧¹, 于睿²

1. 陆军工程大学通信工程学院, 南京 210007;
2. 军事科学院系统工程研究院, 北京 100141

收稿日期:2018-03-22 修回日期:2018-05-11 出版日期:2018-10-10 发布日期:2018-10-13
通讯作者: 王琰
作者简介:高枫越(1987-),男,辽宁海城人,博士研究生,主要研究方向:协同通信、网络编码、信道编码;王琰(1983-),女,河南郑州人,工程师,博士研究生,主要研究方向:室内定位、资源分配;李牧(1990-),男,河北辛集人,博士研究生,主要研究方向:物理层安全、路由协议、短波通信;于睿(1988-),男,山东乳山人,工程师,硕士,主要研究方向:短波通信、无线路由。

Joint channel non-coherent network coded modulation method

GAO Fengyue^1,2, WANG Yan^1,2, LI Mu¹, YU Rui²

1. Communications Engineering College, Army Engineering University of PLA, Nanjing Jiangsu 210007, China;
2. System Engineering Research Institute, Academy of Military Sciences PLA, Beijing 100141, China

Received:2018-03-22 Revised:2018-05-11 Online:2018-10-10 Published:2018-10-13

摘要/Abstract

摘要： 针对时变双向中继信道下的物理层网络编码问题，提出多天线场景下不需要信道状态信息的联合信道编码的非相干物理层网络编码调制和检测方法。首先，为了实现物理层网络编码，设计了源节点的空间调制矩阵。然后，将差分空间调制与物理层网络编码结合，推导得到中继节点处叠加信号的最大后验概率检测表达式。同时，结合叠加信号的星座图，设计从叠加星座到中继转发符号的映射方案。最后，利用信道编码的线形结构，结合比特交织、信道译码与软入软出检测算法，进而得到联合信道-差分物理层网络编码迭代检测方法。仿真结果表明，所提方法能在双向中继场景下实现物理层网络编码的非相干传输与检测，有效提高了系统的吞吐量和频谱效率。

关键词: 双向中继信道, 物理层网络编码, 非相干检测, 信道编码, 差分空间调制

Abstract: For physical-layer network coding over time-varying bi-directional relay channels, a joint channel coding and non-coherent physical-layer network coded modulation and detection scheme without channel state information was designed in multiple-antenna environment. Firstly, the spatial modulation matrix at the source was designed to achieve physical-layer network coding. Then, a differential spatial modulation was combined with physical-layer network coding and maximum a posteriori probability of superimposed signal was derived at the relay. Moreover, considering the constellation of the superimposed signal, a mapping function to map superimposed signal to broadcasting signal was designed. Lastly, taking advantage of the linear structure of channel coding, and combining bit interleaving, channel decoding and soft-input soft-output detection algorithm, an iterative detection approach for joint channel differential physical-layer network coding was obtained. Simulation results show that the proposed scheme can achieve non-coherent transmission and detection used to physical-layer network coding for two-way relay channels and can effectively enhance the throughput and spectral efficiency of the system.

Key words: two-way relay channel, physical-layer network coding, non-coherent detection, channel coding, differential spatial modulation

中图分类号:

TN919.3

高枫越, 王琰, 李牧, 于睿. 联合信道非相干网络编码调制方法[J]. 计算机应用, 2018, 38(10): 2955-2959.

GAO Fengyue, WANG Yan, LI Mu, YU Rui. Joint channel non-coherent network coded modulation method[J]. Journal of Computer Applications, 2018, 38(10): 2955-2959.

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联合信道非相干网络编码调制方法

Joint channel non-coherent network coded modulation method

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