两跳固定中继蜂窝网络的子载波信道分配策略  

Sub-Carrier Channel Assignment for Cellular System with Two-Hop Fixed Relay Stations

作　　者：张瀚峰[1] 王财进[1] 吴伟陵[1] 

机构地区：[1]北京邮电大学信息工程学院,北京100876

出　　处：《吉林大学学报（信息科学版）》2007年第2期126-131,共6页Journal of Jilin University（Information Science Edition）

基　　金：国家自然基金资助项目(90204001);北京市科技计划基金资助项目(D0104002040921)

摘　　要：针对频率复用因子为1的两跳固定中继节点的蜂窝网络中,移动业务分布的时变性和非均匀性,提出了基于同向分配逆向共享的子载波信道资源环状分配策略。该策略无需基站之间的协作也能有效地保证相邻小区节点之间的最小同频干扰距离。通过理论分析和仿真,在用户业务非均匀分布下,与传统两跳蜂窝系统的子载波信道分配策略相比,提出的分配策略系统平均频谱效率有明显改善,尤其在业务分布主要集中在小区边缘时,其平均频谱效率增益可以达到3倍。In the cellular network with two-hop fixed relay stations, a new wireless channel allocation scheme is proposed for time-variety and non-uniform traffic distribution on the condition of frequency reuse factor being equal to one. According to this scheme, the co-channel interference distance among different stations could be guaranteed efficiently without the cooperation among Base Stations （BSs）. Analysis and simulation results show that, the proposed scheme can improve the average spectrum efficiency for non-uniform traffic distributions, compared with the traditional sub-carrier channel assignment scheme in the cellular network with two-hop fixed relay stations. Especially the average spectrum efficiency gain er to the cell boundary. may reach three times when the mobile stations are closer to the cell boundary.

关 键 词：信道分配 非均匀业务分布 固定中继节点 两跳蜂窝系统 

分 类 号：TN915.02[电子电信—通信与信息系统]