NDLI: Joint power and rate control in cognitive network with external interference

Content Provider	IEEE Xplore Digital Library
Author	Yongxin Wang Supeng Leng
Copyright Year	2011
Description	Author affiliation: School of Communication & Information Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China (Yongxin Wang; Supeng Leng)
Abstract	In a cognitive network, secondary users can coexist with primary users by opportunistically exploiting the frequency bands of primary users. However, secondary users should constrain themselves to avoid interference to primary users based on the sensing technology. This paper investigates the method of increasing the spectrum efficiency in cognitive network within external interference. We consider the practical scenario with external interference, in which the wireless node can be treated as secondary users and the external interference can be considered as a primary user. Nevertheless, the ordinary relationship between the primary user and secondary users has been changed. We consider the spectrum resource allocation as a convex optimization problem which could obtain the optimal solution by adopting feasible direction method. Simulation results show that our algorithm could improve the overall throughput significantly.
Starting Page	293
Ending Page	296
File Size	144745
Page Count	4
File Format	PDF
ISBN	9781612844855
e-ISBN	9781612844862
DOI	10.1109/ICCSN.2011.6013596
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication power and rate control Wireless sensor networks Interference cognitive network Throughput convex optimization Ad hoc networks Convex functions Joints external interference
Content Type	Text
Resource Type	Article

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