| 基于物理层网络编码的非对称中继系统性能分析 |
| |
| 引用本文： | 王江洪,谢 红.基于物理层网络编码的非对称中继系统性能分析[J].电讯技术,2011,51(12):14-19. |
| |
| 作者姓名： | 王江洪 谢 红 |
| |
| 作者单位： | 哈尔滨工程大学 信息与通信工程学院，哈尔滨 150001;哈尔滨工程大学 信息与通信工程学院，哈尔滨 150001 |
| |
| 摘 要： | 在无线通信研究中,网络编码因其可有效提升带宽利用率的特性得到了大量关注.但是,网络编码用于双向中继信道(TWRC)时,中继位置的不对称将造成系统性能的下降,故在源节点使用分层调制的方法来解决此问题.研究了分层调制和物理层网络编码的联合以及优化,并进行了系统仿真.仿真结果显示,在非对称中继信道下,通过与传统调制方案(CM...
|
| 关 键 词： | 物理层网络编码 非对称中继 分层调制 双向中继信道 |
Performance Analysis of Asymmetric Relay System Based on Physical-layer Network Coding |
| |
| WANG Jiang-hong and XIE Hong.Performance Analysis of Asymmetric Relay System Based on Physical-layer Network Coding[J].Telecommunication Engineering,2011,51(12):14-19. |
| |
| Authors: | WANG Jiang-hong and XIE Hong |
| |
| Affiliation: | College of Information and Communication Engineering,Harbin Engineering Univers
ity,Harbin 150001,China;College of Information and Communication Engineering,Harbin Engineering Univers
ity,Harbin 150001,China |
| |
| Abstract: | Network coding which can increase bandwidth efficiency has attracted a
significant amount of attention in research community of wireless communication
s. However, when it is applied to a two-way relay channel(TWRC), it suffers fr
o
m performance degradation caused by the asymmetric position of the relay. In ord
er to remedy this problem, using hierarchical modulation at the source node is n
ecessary. By investigating how hierarchical modulation can be incorporated and o
ptimized with physical-layer network coding, the simulation results are encourag
ing in that hierarchically modulated physical-layer network coding(HMPNC) signi
ficantly improves end-to-end bit-error probability and spectral efficiency in
asymmetric relay channels, as compared with conventional modulation(CM) and as
ymmetric modulation(AM). |
| |
| Keywords: | physical-layer network coding asymmetric relay hierarchical modulation two-w
ay relay channel(TWRC) |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《电讯技术》浏览原始摘要信息 |
|
点击此处可从《电讯技术》下载全文 |
|
