基于OFDMA的分布式网络架构干扰分析及资源池概念  

Interference Analysis of OFDMA Based Distributed Network Architecture and Resource Pooling

作　　者：许晓东[1] 吴春丽[1] 陶小峰[1] 张平[1] 

机构地区：[1]北京邮电大学电信工程学院

出　　处：《北京邮电大学学报》2007年第1期19-22,27,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金重大项目(60496312)

摘　　要：为了评估采用正交频分多址接入技术的多小区分布式网络架构的干扰状况,以广义分布式小区架构——群小区为例,具体分析了不采用功率控制、采用信干比平衡功率控制策略以及进一步采用逐步删除算法时的群小区架构小区间干扰状况,评估了与传统蜂窝架构相比较的系统中断性能.分析和仿真表明,相对于传统蜂窝结构,群小区架构的小区间干扰并没有大幅度的提高.并且由于群小区架构的系统资源是统一进行分配与管理的,系统性能较传统蜂窝架构有更大的提高.基于此,进一步提出了资源池概念.To analyze the inter-cell interference of orthogonal frequency division multiple access （OFDMA） based distributed network architecture, with the example of generalized distributed cellular architecture-group cell, the interference conditions of group cell without power control and with signal-tointerference ratio （SIR） balancing power control, stepwise removal algorithm （SRA） are analyzed respectively. The system outage probability compared to traditional cellular structure is evaluated. Analyses and simulation results indicate that the inter-cell interference of group cell will not increase more than traditional cellular structure. Group cell architecture with centralized resource scheduling and allocating also makes it possible to improve the system performance further. Based on these analyses, the concept of resource pooling is proposed.

关 键 词：分布式网络架构 正交频分多址接入 群小区 功率控制 中断概率 资源池 

分 类 号：TN929.53[电子电信—通信与信息系统]