Resource Allocation for OFDMA-based Cognitive Radio Systems with Minimum Rate Constraints

摘要：

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 users target transmission rate.

关键词： cognitive radio OFDMA minimum rate constraints resource allocation water-filling

作者: Li Li Changqing Xu Jian He

作者单位: Department of Electronic Engineering Shanghai Jiao Tong University Shanghai, China

会议类型: 国际会议

会议名称: 2010 The IET 3rd International Conference on Wireless,Mobile & Multimedia Networks(第三届IET无线移动及多媒体网络国际会议 ICWMMN 2010)

会议地点: 北京

会议语种:英文

页码: 234-237

在线出版日期: 2010-09-26（万方平台首次上网日期，不代表论文的发表时间）