TY  - CONF
N1  - cited By 5; Conference of IEEE EuroCon 2013 ; Conference Date: 1 July 2013 Through 4 July 2013; Conference Code:101060
AV  - none
TI  - Cooperative spectrum sensing in decentralized cognitive radio system
Y1  - 2013///
KW  - Achievable throughputs; Better performance; Centralized networks; Co-operative spectrum sensing; Decentralized networks; Dynamic spectrum accesses (DSA); Opportunistic spectrum accesses (OSA); Partially observable Markov decision process
KW  -  Cognitive radio; Signal to noise ratio
KW  -  Radio systems
SN  - 9781467322324
SP  - 113
A1  - Armi, N.
A1  - Yusoff, M.Z.
A1  - Saad, N.M.
EP  - 118
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888618219&doi=10.1109%2fEUROCON.2013.6624974&partnerID=40&md5=f4815ee6d341265ba6ac49e9552cec75
CY  - Zagreb
N2  - Cooperative spectrum sensing (CSS) is capable to improve the performance of signal detection. It is one solution to overcome fading, shadowing, and uncertainty noises. Unlike centralized networks, Secondary User (SU) in decentralized networks independently senses license channel without forwarding the sensing result to central coordinator. This paper investigates the performance of Decentralized Multiuser CSS (DMCSS) in Cognitive Radio (CS) system. Partially observable Markov decision process (POMDP) is used as an aid for SU to sense and access a license channel. It models spectrum as Markov discrete process where idle and busy states are represented by '0' and '1'. The comparisons are made against Centralized Multiuser Cooperative Spectrum Sensing (CMCSS). The derived results show that CMCSS has better performance than DMCSS model. However, at certain values of SNR, DMCSS performance outperforms the achievable throughput by CMCSS through setting of collision threshold (ζ). © 2013 IEEE.
ID  - scholars3257
ER  -