DocumentCode :
3966
Title :
Performance Analysis of a Cognitive Radio Network With a Buffered Relay
Author :
Hung Tran ; Zepernick, Hans-Jurgen ; Hoc Phan ; Sibomana, Louis
Author_Institution :
Dept. of Inf. Technol., Nat. Inst. of Educ. Manage., Hanoi, Vietnam
Volume :
64
Issue :
2
fYear :
2015
fDate :
Feb. 2015
Firstpage :
566
Lastpage :
579
Abstract :
In this paper, we analyze the packet transmission time in a cognitive cooperative radio network (CCRN) where a secondary transmitter (SU-Tx) sends packets to a secondary receiver (SU-Rx) with the help of a secondary relay (SR). In particular, we assume that the SU-Tx and the SR are subject to the joint constraint of the timeout probability of the primary user (PU) and the peak transmit power of the secondary users (SUs). On this basis, we investigate the impact of the transmit power of the PUs and channel mean power on the packet transmission time of the CCRN. Utilizing the concept of timeout, adaptive transmit power-allocation policies for the SU-Tx and SR are considered. More importantly, analytical expressions for the end-to-end throughput, end-to-end packet transmission time, and stable condition for the SR operation are obtained. Our results indicate that the second hop of the considered CCRN is not a bottleneck if the channel mean power of the interference links of the networks is small and if the SR peak transmit power is set to a high value.
Keywords :
cognitive radio; cooperative communication; interference (signal); radio receivers; radio transmitters; relay networks (telecommunication); CCRN; adaptive transmit power-allocation policy; buffered relay; channel mean power; cognitive cooperative radio network; interference links; packet transmission time; performance analysis; primary user; secondary receiver; secondary relay; secondary transmitter; secondary user; timeout probability; Cognitive radio; Interference; Performance analysis; Probability density function; Relays; Resource management; Throughput; Cognitive relay networks; device-to-device communications; packet transmission time; power control; spectrum sharing; stable condition; throughput;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2014.2323338
Filename :
6814913
Link To Document :
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