OFDM系统多小区联合资源分配算法  

Multicell Joint Resource Allocation Algorithm in OFDM Systems

作　　者：曾志民[1] 郑洁莹[1] 张天魁[1] 

机构地区：[1]北京邮电大学通信网络综合技术研究所,北京海淀区100876

出　　处：《电子科技大学学报》2008年第6期811-814,共4页Journal of University of Electronic Science and Technology of China

基　　金：高等学校博士学科点专项科研基金(20040013010)

摘　　要：提出了一种正交频分复用(OFDM)系统多小区间联合的自适应资源分配算法。为了降低系统复杂度,子信道分配和功率分配在不同的层次上分步执行,在小区内部采用改进的Max C/I算法进行动态子信道分配,并以此为基础利用禁忌搜索算法(TS)寻求多小区同频子信道发送功率的最优分配解。性能分析和仿真结果表明,与已有算法相比,该算法能够在满足用户的最小速率要求下充分利用无线频谱资源,提高系统吞吐量。A multicell joint adaptive resource allocation scheme is proposed for multicell orthogonal frequency division multiplexing （OFDM） systems. In order to reduce the complexity of the system, subchannel allocation and power allocation are performed in different level separately. Subchannels are dynamically allocated in every cell using modified Max C/I algorithm, and then we use tabu search （TS） to fmd the optimal transmit power allocation on co-channel of multicell base on the results of subchannel allocation. Performance analysis and simulation results show that the proposed scheme can increase system throughput while guarantee the minimum rate request of all users.

关 键 词：正交频分复用 功率分配 子信道分配 禁忌搜索 

分 类 号：TN929.5[电子电信—通信与信息系统]