| 摘要: |
| 针对无线蜂窝网中的小区间干扰问题，给出一种基于部分频率复用的多小区协作传输
方案。该方案将小区用户划分为中心用户和边缘用户，中心用户采用频率复用因子为1的本
地基站通信，边缘用户采用频率复用因子为3的多基站协作通信，并通过对多个小区的基站
进行功率控制，达到抑制小区间干扰、提高系统容量的目的。数值分析表明，相对于传统多
小区蜂窝系统(Traditional Multi-Cell System，TMCS)和广义分布式天线系统(Generaliz
ed Distributed Antenna System，GDAS)，所提多小区协作蜂窝系统(Multi-Cell C
ooperative System，MCCS)可以有效地克服小区间干扰，提高系统容量。 |
| 关键词: 多小区协作 小区间干扰 部分频率复用 功率控制 遍历容量 |
| DOI： |
|
| 基金项目:国家重点基础研究发展计划(973计划) 资助项目(2008CB317109)
；国家自然科学基金资助项目(61261018);广西自然科学基金重点项目(2011GXNSFD018028)；广西科学基金资助项目(桂科自0991241)；广西无线宽带通信与信号处理重点实验室2012年度主任基金项目(12111) |
|
| Cooperative scheme and capacity analysis of multi-cell system based on fractional frequency reuse |
| WANG Peng,XIAO Hai-lin |
| () |
| Abstract: |
| For the problem of inter-cell interference(ICI) in wireless cellular
networks, a strategy of multi-cell cooperative communication based on fractional
frequency reuse (FFR) is presented. In this scheme, the mobile users are divide
d into two categories, one is cell center user (CCU) and the other is cell edge
user (CEU). CCUs are served by local base station with universal frequency reuse
and CEUs are supported by cooperative base stations with frequency reuse factor
of 3. Based on FFR and power control for base station, the inter-cell interfere
nce is mitigated and system′s capacity is improved. Numerical results show that
compared with traditional multi-cell system(TMCS) and generalized distributed ant
enna system(GDAS), multi-cell cooperative system(MCCS) proposed in this paper can reduce the inter
-cell interference efficiently, and also improve system′s capacity. |
| Key words: multi-cell cooperation inter-cell interference (ICI) fractional frequency re
use (FFR) power control ergodic capacity |
