| 摘要: |
| 针对非正交两跳多中继协作通信系统中的分布式中继选择问题，提出了一种基于非正
交信道的中继选择准则，简化了系统的设计。分析了其误码率性能，给出了其解析表达式
和以总功率为约束条件下的最优功率分配方案。仿真结果表明，最佳中继选择准则明显优于
传统的中继选择准则，且在最优功率分配方案下，可以获得明显的分集增益，系统的误码率
显著下降。 |
| 关键词: ad hoc网络 协作通信 非正交信道 分布式中继选择 功率分配 |
| DOI： |
|
| 基金项目:总装备部科研项目 |
|
| Distributed relay selection and power allocation based on non-orthogonal channel |
| WANG Tao,QUAN Hou-de,CUI Pei-zhang |
| () |
| Abstract: |
| A relay selection criteria is proposed based on non-orthogonal channe
l,in order to solve the problem of distributed relay selection in non-orth
ogonal two-hop multi-relay cooperative communication to predigest the system d
esign.
The system BER (Bit Error Rate) expression is obtained with its performance ana
lysis, meanwhile, the optimal power allocation scheme is also proposed under th
e condition of total power restricted. Furthermore, computer simulations is con
ducted to show the BER performances of various cooperative relay selection crite
ria and power allocation schemes, conforming that the proposed cooperative relay
selection criteria outperforms the traditional relay selection rules and the pr
oposed transmission schemes can achieve the diversity gain with the BER decreas
ed under the optimal power allocation schemes. |
| Key words: ad hoc network cooperative communication non-orthogonal channel distributed rel
ay selection power allocation |
