Title :
Maximum Likelihood Ratio Spectrum Detection Model for Multicarrier Modulation Based Cognitive Radio Systems
Author :
Luo, Tao ; Xiang, Weidong ; Jiang, Tao ; Wen, Zhigang
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, we first discuss multicarrier modulation (MCM) based cognitive radio (CR) systems. A maximum likelihood ratio spectrum detection model is then presented to detect the occurrence and spectrum gap of licensed users (LUs) signals. Next, we theoretically study the proposed model by deducing an optimal decision region and the detection probability and false alarm probability. Simulation results validate the derived performances of the proposed model for MCM based CR systems.
Keywords :
cognitive radio; maximum likelihood estimation; modulation; cognitive radio systems; maximum likelihood ratio spectrum detection model; multicarrier modulation; Bandwidth; Chromium; Cognitive radio; Electronic mail; Frequency domain analysis; Maximum likelihood detection; OFDM modulation; Phase shift keying; Quadrature amplitude modulation; USA Councils;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.359
