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Resource allocation for OFDMA-based cognitive radio systems with minimum rate constraints

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3 Author(s)
Li, Li ; Department of Electronic Engineering, Shanghai Jiao Tong University, China ; Xu, Changqing ; He, Jian

In this paper, we study the resource allocation problem for real-time services in OFDMA-based cognitive radio (CR) systems. A novel resource allocation algorithm is proposed to maximize the sum-rate of all CR users while keeping the interference introduced to the primary user (PU) under a specified threshold and at the same time to meet the constant transmission rate for each CR user to guarantee the real-time service. In contrast to classical resource allocation algorithms, the proposed algorithm can achieve higher transmission rate and guarantee each CR user's target transmission rate.

Published in:
Wireless, Mobile and Multimedia Networks (ICWMNN 2010), IET 3rd International Conference on

Date of Conference: 26-29 Sept. 2010

Page(s):
234 - 237
Conference Location :
Beijing, China
Digital Object Identifier :
10.1049/cp.2010.0659
Product Type:
Conference Publications

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