A High Efficiency Algorithm of Power and Bit Allocation for OFDMA Systems

摘要：

In this paper, we propose a high efficiency algorithm of power and bit allocation for orthogonal frequency division multiple access (OFDMA) system, in which the allocation procedure is divided into three parts: linear water-filling power allocation, bit allocation and power and bit adjustment. It can quickly achieve the power and bit allocation on the users sub-carrier level with a good fairness performance. Simulation results show that the proposed algorithm can obviously decrease the operation complexity and slightly descended system throughput contrast to other algorithms. It is a promising algorithm to be used in a practical system for radio resource allocation.

关键词： OFDMA power allocation bit allocation adaptive modulation

作者: Dongmei Zhang Youyun Xu Yueming Cai

作者单位: Institute of Communications Engineering PLA University of Science and Technology Nanjing, Jiangsu, China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）