Transmission Capacity of Secondary Networks in Hybrid Overlaid/Underlaid Cognitive Radio Systems

摘要：

　　We study the transmission capacity of the secondary (SR) network in the hybrid cognitive radio (CR) system where underlaid and overlaid access approaches are combined to improve the transmission capacity of the SR network.The transmission behavior of the primary (PR) network is characterized as a two-state (idle and busy) discrete time Markov model,and sensing performance of the SR network captured by the missed detection probability and false alarm probability is also considered.We analyze their effects on the transmission capacity of the SR network and the outage probability of the PR network.Analysis and numeric results show that hybrid mode has greater superiority than either overlaid mode or underlaid mode on the transmission capacity of the SR network,especially when the PR network has light load.The missed detection has good effect on the transmission capacity of the SR network,but increases the outage probability of the PR network,which is dispointed.The false alarm has no effect on the outage probability of the PR network,but decreases the transmission capacity of the SR network.

关键词： hybrid overlaid/underlaid CR system outage probability transmission capacity

作者: Yingchun Ma Yuchen Guo Kai Niu Jiaru Lin

作者单位: Key Lab of Universal Wireless Communications, Ministry of Education,Beijing University of Posts and Telecommunications Beijing, P.R. China

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 512-516

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）