改进的集中式协作用户选择方法

王荆宁; 沙学军; 卢为党; 张中兆

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改进的集中式协作用户选择方法

更新时间：2025-07-09

- 改进的集中式协作用户选择方法
- Improved Selection Methods for Concentrative Cooperative Partners
- 西安交通大学学报 2009年43卷第8期页码：64-67+71
- 作者机构：
  
  哈尔滨工业大学通信技术研究所,哈尔滨,150001
- 作者简介：
- 基金信息：
  
  : 2008-11-17. 作者简介: 王荆宁(1981- ),男,博士生;张中兆(联系人),男,教授,博士生导师. 基金项目: 国家重点基础研究发展计划资助项目(2007CB310601);国家自然科学基金资助项目(60872016)
- DOI：
  中图分类号： TN925
- 网络首发：2009-08-10，
  
  纸质出版：2009
- 稿件说明：
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王荆宁, 沙学军, 卢为党, 等. 改进的集中式协作用户选择方法[J]. 西安交通大学学报, 2009,43(8):64-67+71.

Improved Selection Methods for Concentrative Cooperative Partners[J]. 2009, 43(8): 64-67+71.
王荆宁, 沙学军, 卢为党, 等. 改进的集中式协作用户选择方法[J]. 西安交通大学学报, 2009,43(8):64-67+71. DOI：

Improved Selection Methods for Concentrative Cooperative Partners[J]. 2009, 43(8): 64-67+71. DOI：

摘要

针对协作分集系统中协作用户选择方法计算复杂度较高的缺点

提出了2种改进的协作用户选择方法——信道最优方法和非互惠信道最优方法.信道最优方法首先为信道最差的用户选择一个与其信道最优的用户作为协作伙伴

两用户互相作为对方的协作伙伴转发对方的信息

并且引入了2个信噪比门限来避免不必要的协作过程; 非互惠信道最优方法是为信道最差的用户选择一个信道最优的用户作为协作伙伴

为其转发信息

而该协作伙伴则另外选择一个最优的用户作为自己的协作伙伴.仿真表明

在小区内的用户数达到50以上的时候

这2种协作用户选择方法在能量增益与最差链路优先匹配算法相当的基础上

可以省略复杂度为O(N

)的计算.

Abstract

Focusing on the high computational complexity of partner selection methods in cooperative systems

two improved partner selection methods are proposed. These are the best channel matching strategy and the non-reciprocal best channel matching strategy. The user with the worst link is firstly taken into account in the best channel matching strategy. Then the user with the best inter-user channel quality is selected by the method as his partner. The two users cooperate to relay information for each other

and unnecessary cooperative process is avoided by setting up two special thresholds of signal-to-noise. The non-reciprocal best channel matching strategy starts from the user with the worst link and then selects the user with the best inter-user channel as a partner for each user. Simulation results show that both the partner selection strategies can reduce O(N

)computation complexity

meanwhil

e keep the same energy gain as the existing worst-link-first algorithm.

关键词

Keywords

references

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