摘要
本文针对存在信道估计误差的情况,分析了非理想信道状态信息下认知中继系统的性能。建立了非理想信道状态信息下认知中继系统的数学模型,推导出了非理想信道状态信息下认知中继系统中断概率的表达式。理论分析表明在非理想信道状态信息下认知中继系统的性能较理想状态有所下降,但更符合实际情况。同时数值仿真结果验证了理论分析的正确性。
Based on the existing channel estimation error, analyzed the outage probability performance of cognitive cooperative communication system with limited feedback. Combined with the actual situation, we proposed the outage probability analytic expression of the model system. Theoretical analysis shows that compared with the ideal state, the performance of the system with limited feedback is reduced. And numerical simulation results demonstrate the validity of the theoretical analysis.
出处
《无线通信技术》
2011年第2期16-21,共6页
Wireless Communication Technology
基金
国家自然科学基金(609720709)
重庆市自然科学基金重点项目(CSTC2009BA2090)
关键词
认知中继
中断概率
信道估计
误差
outage probability
cognitive cooperative
channel estimation error
