Title :
On performance of the Wald test in partially coherent Cognitive Radio channels
Author :
Rodriguez, Oscar Filio ; Primak, Serguei ; Kontorovich, Valeri
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada
Abstract :
A spectrum sensing technique for Cognitive Radio (CR) Networks based on the Sequential Analysis of A.Wald is applied to partially coherent channel scenarios. It is shown that using Wald´s test, it is possible to reduce the number of samples required to detect the presence of the primary user by approximately a factor of 2 in comparison to the well known Neyman-Pearson test. An expression for the Wald test statistic for the case of partially coherent channel is derived. Effects of phase uncertainty on the performance of the test is investigated.
Keywords :
cognitive radio; radio networks; radio spectrum management; Neyman-Pearson test; Wald test; cognitive radio channels; cognitive radio networks; partially coherent channel; phase uncertainty; primary user; sequential analysis; spectrum sensing technique; AWGN; Lead; Logic gates; Radio access networks; Random variables; Signal to noise ratio;
Conference_Titel :
Communications and Information Technology (ICCIT), 2011 International Conference on
Conference_Location :
Aqaba
Print_ISBN :
978-1-4577-0401-7
DOI :
10.1109/ICCITECHNOL.2011.5762685
