摘要
在瑞利衰落信道下研究了采用前向译码转发协议的三节点协作模型,分析了中继分布大规模天线阵列时系统的可靠性能。为了有效地降低系统复杂度,同时又能获得大规模天线带来的分集增益,给出了中继选择合并(SC)与天线选择空间调制(SM)相结合的组合传输方案。为了进一步提高可靠性能,研究了SC/SM组合方案如何通过功率分配优化其误比特率性能。仿真分析表明,大规模中继SC/SM方案的功率分配能够有效改善系统的误比特率性能。
The transmission system reliability performance under the decode-and-forward( DF) protocol is investigated in the case of three-node collaboration model over the Rayleigh fading channel,and the system reliability performance is analyzed by setting up very large antenna arrays on the relay node. In order to ef-fectively reduce the system complexity and obtain the diversity gain from the large-scale antennas,the com-bination transmission mode combined with selection combining ( SC ) at the relay and spatial modulation ( SM) with antenna selection is given. For further improve the reliability performance particular concerns are drawn on how to optimize the system bit error rate performance through self-adaptive power allocation in the SC/SM system schemes. Simulative experiments show the power allocation of the SC/SM scheme with very large antenna arrays on the relay node can effectively improve the bit error rate.
出处
《电讯技术》
北大核心
2015年第10期1087-1093,共7页
Telecommunication Engineering
基金
国家自然科学基金资助项目(61371091
61301228)
高等学校博士学科点专项科研基金资助项目(20132125110006)
中央高校基本科研业务费专项基金资助项目和大连海事大学优秀科技创新团队培育计划资助项目(3132013334)~~
关键词
多输入多输出
协作通信
空间调制
选择合并
功率分配
multiple-input multiple-output
cooperative communication
spatial modulation
selection combining
power allocation
