基于IEEE802.16e的子载波分配方式分析  

Performance analysis of subcarrier allocation based on IEEE802.16e

作　　者：许峰[1] 李群[1] 王暄 

机构地区：[1]东南大学移动通信国家重点实验室 [2]解放军61416部队

出　　处：《解放军理工大学学报（自然科学版）》2010年第2期212-215,共4页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家863计划资助项目(2006AA01Z263)

摘　　要：针对IEEE802.16e规定的分布式和连续式2种基本的子载波分配方式,以上行链路为例,分析无线移动信道环境下,其接收端信号的功率分布、信号干扰噪声比SINR的累积分布函数曲线CDF(cumulative distribution function)分布,得出了分布式子载波分配功率分布更加集中的特点。同时,通过分析用户逻辑子信道上所采用的调制编码方案MCS(modulation coding scheme)的分布,从另一个角度验证分析结果,进一步给出2种不同分配方式的性能特点和适用情况,对IEEE802.16e的OFDMA无线资源的有效管理和调度具有积极的指导意义和实用价值。Aiming at the two basic ways of subcarrier allocation in IEEE802.16e called the distributed subcarrier permutation and the adjacent subcarrier permutation, the distribution curves of the received signal power and the CDF （cumulative distribution function） of SINR were analyzed in the UL under the mobile channel. The result shows that the power distribution of the distributed subcarrier permutation is more centralized and is consistent with the analysis of the use of MCS （modulation coding scheme） on OFDMA subchannels. The two basic ways of subcarrier allocation based on sub-channel have different performance characteristics and applicable conditions were provided. The conclusion has active meanings to the management and scheduling of OFDMA wireless resources.

关 键 词：IEEE802.16E 子载波分配 逻辑子信道 正交频分多址 部分使用子信道 自适应调制编码 

分 类 号：TN929.533[电子电信—通信与信息系统]