Title :
A distributed cooperative spectrum sensing based on network code in cognitive radios
Author :
Hao, Zhang-hong ; Tang, You-xi ; Xia, Jin-xiang
Author_Institution :
Nat. key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, we develop a distributed cooperative spectrum sensing algorithm based on network code to decrease the need for bandwidth in cognitive radios. The model of the distributed cooperative spectrum sensing is analyzed, and the algorithm of distributed scheme based on network code is described. The simulation results show that compared with the distributed scheme without network code and the non-cooperative one, the throughput of secondary users is increased apparently, and also, the probability of detection of the distributed scheme with network code is improved about 10% and 20%, respectively, further, the optimal sensing time is shorter about 82% and 88%, respectively.
Keywords :
cognitive radio; distributed sensors; network coding; probability; radio spectrum management; cognitive radios; detection probability; distributed cooperative spectrum sensing algorithm; network code; optimal sensing time; secondary users throughput; Algorithm design and analysis; Bandwidth; Cognitive radio; Detectors; Electronic mail; FCC; Intelligent networks; Matched filters; Resource management; Throughput; Distributed cooperative spectrum sensing; cognitive radio; network code; optimal sensing time; throughput;
Conference_Titel :
Apperceiving Computing and Intelligence Analysis, 2009. ICACIA 2009. International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5204-0
Electronic_ISBN :
978-1-4244-5206-4
DOI :
10.1109/ICACIA.2009.5361163
