Resource Allocation for Non-Real-Time Services in OFDM-Based Cognitive Radio Systems

被引：33
|
作者：
Zhang, Yonghong [1 ]
Leung, Cyril [1 ]
机构：
[1] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada
来源：
IEEE COMMUNICATIONS LETTERS | 2009年 / 13卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Cognitive radio; multiuser OFDM; OFDMA; resource allocation; non-real-time;
D O I：
10.1109/LCOMM.2009.081471
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
We study the resource allocation (RA) problem in a multiuser OFDM-based cognitive radio (CR) system for non-real-time (NRT) applications in which average user data rates are to be maintained proportionally. In contrast to existing algorithms designed for multiuser OFDM systems, which are unable to guarantee users proportional rates when applied in a CR system, the proposed optimal RA algorithm ensures that CR user rates are maintained in proportion to predefined target rates while at the same time providing an improved system throughput.
引用
收藏
页码：16 / 18
页数：3
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