Comparative Study of Centralized Cooperative Spectrum Sensing in Cognitive Radio Networks
Fixed spectrum assignment policy is loosing applicability in present wireless networks which demand for efficient usage of spectrum. There is an urgent need to fully exploit the available spectrum. Moreover, regulatory bodies require flexible and adaptable band assignment techniques to tackle for inefficient utilization of spectrum. Cognitive radio (CR) network is a key solution used by organizations to counter the short comings of fixed spectrum assignment policy. This paper analyzes different centralized cooperative spectrum sensing techniques to detect the Primary Transmitter (PT) in wireless band. Techniques compared in this study include fuzzy logic collaborative sensing, asynchronous cooperative sensing, weighted cooperative sensing etc. Conclusive analysis of this paper indicates that probability of detection can be best achieved by sending local decision of CR user to decision center (DC), which further confirm it on the bases of collaborative decision about the existence of PT.
Cognitive Radio Primary Transmitter Decision Center
Kabeer Ahmed Faisal Bashir Najum-ul-Hassan Muhammad Ehsan ul Haq
College of Telecommunication Engineering, (NUST), Rawalpindi Pakistan National University (FAST), Islamabad, Pakistan National University of Modern Languages (NUML), Islamabad, Pakistan
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
1927-1930
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）