標題: Performance Analysis of Energy Detection Based Spectrum Sensing with Unknown Primary Signal Arrival Time
作者: Wu, Jwo-Yuh
Wang, Chih-Hsiang
Wang, Tsang-Yi
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: Cognitive radio;spectrum sensing;energy detection
公開日期: 1-七月-2011
摘要: Spectrum sensing in next-generation wireless cognitive systems, such as overlay femtocell networks, is typically subject to timing misalignment between the primary transmitter and the secondary receiver. In this paper, we investigate the performance of the energy detector (ED) when the arrival time of the primary signal is modeled as a uniform random variable over the observation interval. The exact formula for the detection probability is derived and corroborated via numerical simulation. To further improve the detection performance, we propose a robust ED based on the Bayesian principle. Computer simulation confirms the effectiveness of the Bayesian based solution when compared with the conventional ED.
URI: http://dx.doi.org/10.1109/TCOMM.2011.050211.100146
http://hdl.handle.net/11536/21829
ISSN: 0090-6778
DOI: 10.1109/TCOMM.2011.050211.100146
期刊: IEEE TRANSACTIONS ON COMMUNICATIONS
Volume: 59
Issue: 7
起始頁: 1779
結束頁: 1784
顯示於類別:期刊論文


文件中的檔案:

  1. 000293659600005.pdf