基于最优中继的协作频谱感知方法研究
|
摘要
针对多用户频谱感知过程中的信道衰落和能量消耗问题,提出一种兼顾性能和能耗的分布式中继协作感知算法。该算法在中继转发功率有限的条件下,采用多跳式中继协作技术,为中继申请者选择最优协作中继,达到感知性能和节点能耗的均衡。经过理论分析,推导出基于检测概率和能耗的效益函数。与传统非中继协作感知算法和单跳式中继协作感知算法进行仿真对比,结果表明该算法在保证系统感知性能的同时,有效降低了中继节点能耗。
To solve channel fading and energy consumption in multi-user spectrum sensing,a distributed relay cooperative sensing algorithm in consideration of both performance and energy consumption is proposed.The proposed algorithm selects the best cooperative relay for the relay applicant under the condition of limited relay power,and achieves the balance of between the perceptual performance and the node energy consumption.The benefit function based on detection probability and energy consumption is deduced.Compared with the traditional non-relay cooperative sensing algorithm and single-hop relay cooperative sensing algorithm,the proposed algorithm can reduce the energy consumption of the relay nodes while ensuring perceptual performance of the system.
To solve channel fading and energy consumption in multi-user spectrum sensing,a distributed relay cooperative sensing algorithm in consideration of both performance and energy consumption is proposed.The proposed algorithm selects the best cooperative relay for the relay applicant under the condition of limited relay power,and achieves the balance of between the perceptual performance and the node energy consumption.The benefit function based on detection probability and energy consumption is deduced.Compared with the traditional non-relay cooperative sensing algorithm and single-hop relay cooperative sensing algorithm,the proposed algorithm can reduce the energy consumption of the relay nodes while ensuring perceptual performance of the system.
引文
[1]CACCIAPUOTI A S,AKYILDIZ I F,PAURA L.Optimal Primary-User Mobility Aware Spectrum Sensing Design for Cognitive Radio Networks[J].IEEE Journal on Selected Areas in Communications,2013,31(11):2161-2172.
[2]李美玲.基于中继的协作频谱感知性能分析及优化[J].通信学报,2013,34(09):33-40.LI Mei-ling.Performance Analysis and Optimization of Cooperative Spectrum Sensing with Relay[J].Journal on Communications,2013,34(09):33-40.
[3]张学军,鲁友,田峰等.基于最优中继的自适应协作频谱感知算法[J].电子学报,2016,44(06):1429-1436.ZHANG Xue-jun,LU You,TIAN Feng,et al.An Algorithm of Adaptive Cooperative Spectrum Sensing Based on Optimal Relay[J].ACTA ELECTRONICA SINICA,2016,44(06):1429-1436.
[4]STOTAS S,NALLANATHAN A.On the Outage Capacity of Sensing-Enhanced Spectrum Sharing Cognitive Radio Systems in Fading Channels[J].IEEE Transactions on Communications,2011,59(10):2871-2882.
[5]郭莉莉,陈永红,张士兵.基于中继的协作频谱感知[J].通信技术,2014,47(06):626-629.GUO Li-li,CHEN Yong-hong,ZHANG Shi-bing.Relay-based Cooperative Spectrum Sensing[J].Communications Technology,2014,47(06):626-629.
[6]朱佳,郑宝玉,邹玉龙.基于最佳中继选择的协作频谱感知方案研究[J].电子学报,2010,38(01):92-98.ZHU Jia,ZHENG Bao-yu,ZOU Yu-long.Cooperative Spectrum Sensing in Mu1tiuser Cognitive Radio Networks with Best Relay Selection[J].Acta Electronica Sinica,2010,38(01):92-98.
[2]李美玲.基于中继的协作频谱感知性能分析及优化[J].通信学报,2013,34(09):33-40.LI Mei-ling.Performance Analysis and Optimization of Cooperative Spectrum Sensing with Relay[J].Journal on Communications,2013,34(09):33-40.
[3]张学军,鲁友,田峰等.基于最优中继的自适应协作频谱感知算法[J].电子学报,2016,44(06):1429-1436.ZHANG Xue-jun,LU You,TIAN Feng,et al.An Algorithm of Adaptive Cooperative Spectrum Sensing Based on Optimal Relay[J].ACTA ELECTRONICA SINICA,2016,44(06):1429-1436.
[4]STOTAS S,NALLANATHAN A.On the Outage Capacity of Sensing-Enhanced Spectrum Sharing Cognitive Radio Systems in Fading Channels[J].IEEE Transactions on Communications,2011,59(10):2871-2882.
[5]郭莉莉,陈永红,张士兵.基于中继的协作频谱感知[J].通信技术,2014,47(06):626-629.GUO Li-li,CHEN Yong-hong,ZHANG Shi-bing.Relay-based Cooperative Spectrum Sensing[J].Communications Technology,2014,47(06):626-629.
[6]朱佳,郑宝玉,邹玉龙.基于最佳中继选择的协作频谱感知方案研究[J].电子学报,2010,38(01):92-98.ZHU Jia,ZHENG Bao-yu,ZOU Yu-long.Cooperative Spectrum Sensing in Mu1tiuser Cognitive Radio Networks with Best Relay Selection[J].Acta Electronica Sinica,2010,38(01):92-98.