J4 ›› 2010, Vol. 37 ›› Issue (4): 624-629+654.doi: 10.3969/j.issn.1001-2400.2010.04.008

• 研究论文 • 上一篇    下一篇

一种多小区MIMO系统的分层预编码方案

郝东来1,2;葛建华1
  

  1. (1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071;
    2. 西安通信学院 电子工程教研室,陕西 西安  710106)
  • 收稿日期:2009-05-01 出版日期:2010-08-20 发布日期:2010-10-11
  • 作者简介:郝东来(1974-),男,西安电子科技大学博士研究生,E-mail: hao_dl@126.com.
  • 基金资助:

    国家高技术发展863计划专项课题资助项目(2006AA01Z270);陕西省自然科学基金资助项目(2007F07)

Layer-based precoding scheme for the multi-cell MIMO system

HAO Dong-lai1,2;GE Jian-hua1   

  1. (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China;
    2. Xi'an Institute of Communication, Xi'an  710106, China)
  • Received:2009-05-01 Online:2010-08-20 Published:2010-10-11

摘要:

针对多小区MIMO系统中干扰抑制的问题,提出了一种基于分层结构的预编码解决方案.在传统预编码算法的基础上,通过引入信漏噪比概念并借助于博弈论原理,在小区内和小区间分层进行预编码处理,根据每层具体场景,预编码权值基于不同的准则和方法进行选择,使得在较低复杂度下能够获得较好的多小区多用户干扰抑制的效果.仿真结果表明,本方案在多小区和单小区典型场景下,与现有方案相比,性能均有一定的提升.

关键词: 多输入多输出, 多小区, 预编码, 干扰抑制

Abstract:

A new layer-based precoding scheme is presented in multi-cell Multiple-Input Multiple-Output (MIMO) systems. Based on the traditional precoding algorithm, a layered precoding method is adopted in the intra and inter-cell separately. By means of the game theory and the concept of signal leakage noise rate, a precoding weights selection criteria and methods in each layer are also proposed. The scheme can obtain an interference suppression effect for multi-users in the multi-cell system. Simulation results show that the proposed algorithm, with low computational complexity, provides improvement over existing schemes.

Key words: MIMO, multi-cell, precoding, interference suppression