Paper Info
Title
Optimal throughput analysis of multiple channel access in cognitive radio networks
Abstract
In this paper we consider a time slotted cognitive radio (CR) network with N wireless channels and M secondary users (SUs). We focus on a multiple channel access policy where each SU stochastically decides whether to access idle channels or not based on the given access probability (AP) that is adapted to the channel state information (CSI), if possible. The AP plays an important role in the random access policy because it can control the number of SUs who can access idle channels in a simple manner and hence alleviate packet collisions among SUs. We assume that each SU can access at most L idle channels simultaneously at a time slot whenever possible. We consider three cases—(a) all SUs have full CSI, (b) all SUs have no CSI, and (c) all SUs have partial CSI. We analyze the throughput of an arbitrary SU for the three cases, and rigorously derive a closed-form expression of the optimal AP values that maximize the throughput of an arbitrary SU for the three cases. From the analysis, we show the impact of multiple channel access and the acquisition of CSI on throughput performance.
Year
DOI
Venue
2019
10.1007/s10479-017-2648-3
Annals of Operations Research
Keywords
Field
DocType
Cognitive radio network, Random access policy, Throughput performance, Optimal access probabilities, Multiple channel access
Wireless,Idle,Network packet,Computer network,Communication channel,Throughput,Mathematics,Random access,Cognitive radio,Channel state information
Journal
Volume
Issue
ISSN
277.0
SP2
1572-9338
Citations 
PageRank 
References 
1
0.35
16
Authors
3
Name
Order
Citations
PageRank
Sangdon Park1399.11
Gang Uk Hwang224829.60
Jun-Kyun Choi317543.94