Title :
Performance analysis of spectrum sensing for phase-modulated signal under MAP criterion
Author :
Hua Fu ; Pooi-Yuen Kam
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
This paper is concerned with detector design and performance analysis for spectrum sensing of phase-modulated signal in cognitive radio systems. Under the maximum a posteriori probability criterion, the optimal detector which outperforms the popular energy detector is derived, and its detection and false-alarm probabilities that describe the receiver operating characteristic (ROC) are analyzed. These probabilities are obtained as explicit, closed-form expressions, which show analytically ROC behavior as a function of various system parameters such as the signal-to-noise ratio and the number of data samples. The theoretical analysis and results are validated by computer simulations.
Keywords :
cognitive radio; maximum likelihood estimation; phase modulation; probability; radio spectrum management; telecommunication network reliability; MAP criterion; ROC behavior; cognitive radio systems; energy detector; false-alarm probabilities; maximum a posteriori probability criterion; optimal detector design; performance analysis; phase-modulated signal; receiver operating characteristic; signal-to-noise ratio; spectrum sensing; system parameters; Approximation methods; Cognitive radio; Detectors; Signal to noise ratio; Simulation; Upper bound; CR; I0(x); MAP criterion; PU; Performance analysis; Phase modulation; ROC; SU; bound; spectrum sensing;
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICC.2013.6654956
