Paper Info
Title
Power saving and improving the throughput of spectrum sharing in wideband cognitive radio networks.
Abstract
This paper considers a wideband cognitive radio network which can simultaneously sense multiple narrowband channels and thus aggregate the detected available channels for transmission and proposes a novel cognitive radio system that exhibits improved sensing throughput and can save power consumption of secondary user (SU) compared to the conventional cognitive radio system studied so far. More specifically, under the proposed cognitive radio system, we study the problem of designing the optimal sensing time and power allocation strategy, in order to maximize the ergodic throughput of the proposed cognitive radio system under two different schemes, namely the wideband sensing-based spectrum sharing scheme and the wideband opportunistic spectrum access scheme. In our analysis, besides the average interference power constraint at primary user, the average transmit power constraint of SU is also considered for the two schemes and then a subgradient algorithm is developed to obtain the optimal sensing time and the corresponding power allocation strategy. Finally, numerical simulations are presented to verify the performance of the two proposed schemes.
Year
DOI
Venue
2015
10.1109/JCN.2015.000070
JOURNAL OF COMMUNICATIONS AND NETWORKS
Keywords
Field
DocType
Cognitive radio (CR),power saving,spectrum sharing,throughput maximization,wideband spectrum sensing
Wideband,Narrowband,Transmitter power output,Subgradient method,Computer science,Computer network,Communication channel,Real-time computing,Interference (wave propagation),Throughput,Cognitive radio
Journal
Volume
Issue
ISSN
17
SP4
1229-2370
Citations 
PageRank 
References 
0
0.34
14
Authors
4
Name
Order
Citations
PageRank
Shiyin Li101.01
Shuyan Xiao200.34
Maomao Zhang310.72
Xiaoguang Zhang400.34