非时隙结构认知无线网络中重试授权用户对系统性能的影响

Impact of retrial primary users on the system performance in unslotted cognitive radio network

研究多信道认知无线网络中授权用户的重试现象对系统性能的影响.用连续马尔可夫链的方法构建系统的分析模型,并通过矩阵分析方法得出了系统的稳态概率及评价该系统性能的性能指标.Matlab分析结果表明,授权用户的重试现象将导致非授权用户的受迫中断概率增加和吞吐量减少.

The impact of retrial primary users on the system performance in multi-channel cognitive radio network was studied.We constructed the analytical model of the system by using continuous Markov chain,obtained the steady sate probability of the system and the performance measures which can estimate the performance of the system by matrix analytic method.The Matlab analysis show that primary user＇s retrial phenomenon will lead to the forced termination probability of SUs increase and the throughput of SUs reduce.