摘要
建立多用户认知MIMO系统模型,研究了多天线技术对多用户认知无线电系统的影响,重点推导了多用户认知MIMO系统在平坦瑞利衰落信道环境下的中断概率,给出它的闭合数学表达式,并详细分析了发送和接收天线数对主用户和认知用户性能的影响。通过仿真验证了理论分析的正确性,结果表明多天线技术提高了系统性能。
To analyze the multi-antenna gain in multiuser cognitive radio system, a multiuser cognitive MIMO framework was presented. The outage performance was considered in the multiple-antenna flat Raleigh fading broadcast downlink channel and the closed-form expression of the outage probability of primary and secondary users was derived. The number of transmitter and receiver antenna was carefully analyzed for impacts the outage performance of the primary and secondary user. Simulation verified the theory analyses and results show that the multi-antenna gain improves the system performance.
出处
《通信学报》
EI
CSCD
北大核心
2009年第10期81-88,95,共9页
Journal on Communications
基金
国家自然科学基金资助项目(60772062)
国家重点基础研究发展计划("973"计划)基金资助项目(2007CB310607)
国家高技术研究发展计划("863"计划)基金资助项目(2009AA01Z241)
东南大学移动通信国家重点实验室开放研究基金资助项目(N200813)~~
