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多小区协作上行链路系统中一种以用户为中心的动态分簇算法

发表时间:2017-08-31  浏览量:218  下载量:40
全部作者: 张喆,张建康,穆晓敏
作者单位: 郑州大学信息工程学院
摘 要: 协作接收技术是多小区协作上行链路系统中一种抑制小区间干扰(inter-cell interference,ICI)的有效手段。以用户为中心,提出一种基于干扰信道强度的动态分簇算法,折中协作接收增益与开销。基于对基站(base station,BS)交互协作信息负担的考量,将每个基站的协作机会视为一种有限资源。用户以干扰信道强度为竞争力,使用竞争的方式寻求基站的协作机会。为降低计算复杂度,进一步提出一种多级预分簇算法。仿真结果显示,本文所提算法能够以适中的计算复杂度,在有效控制基站协作负担的同时,实现协作增益与协作开销的良好折中。
关 键 词: 无线通信技术;协作接收;动态分簇;小区间干扰;信道强度;预分簇
Title: Dynamic user-centric clustering scheme for uplink multi-cell cooperative systems
Author: ZHANG Zhe, ZHANG Jiankang, MU Xiaomin
Organization: School of Information Engineering, Zhengzhou University
Abstract: Cooperative receiving has been consented as an effective technique in combating inter-cell interference (ICI) for uplink multi-cell cooperative systems. To tradeoff between the cooperative receiving gains and costs, we propose a dynamic user-centric clustering scheme algorithm based on the strength of interfering channel. More specifically, the cooperation opportunity of a base station (BS) is viewed as a limited resource, considering the signal processing load of BS. The users located within the coverage of the cooperative cells competitively acquire the cooperation opportunity of each BS based on the interfering channel strength. Moreover, a hierarchical pre-clustering algorithm is proposed to further reduce the computational complexity. Simulation results demonstrate that the proposed clustering algorithm is able to acquire tradeoff between cooperative gains and costs by avoiding excess burden of cooperation on a particular BS, and imposed modest computational complexity.
Key words: wireless communication techniques; cooperative receiving; dynamic clustering; inter-cell interference; channel strength; pre-clustering
发表期数: 2017年8月第16期
引用格式: 张喆,张建康,穆晓敏. 多小区协作上行链路系统中一种以用户为中心的动态分簇算法[J]. 中国科技论文在线精品论文,2017,10(16):1786-1792.
 
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