Distributed precoding techniques for weighted sum rate maximization in mimo interfering broadcast channels

Hyun Joo Choi, Seok Hwan Park, Sang Rim Lee, Inkyu Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, we propose a linear precoding technique for weighted sum rate (WSR) maximization in multiple-input multiple-output interfering broadcast channels. In multicell environments, the WSR can be jointly maximized through centralized processing which causes a large amount of channel state information (CSI) exchange. In order to reduce the overhead associated with CSI, we focus on a distributed precoding scheme utilizing local CSI at each base station (BS). First, applying a high signal-to-interference-plus-noise ratio assumption, we decouple the WSR maximization problem into distributed problems. Then we solve this distributed WSR maximization problem for each BS by using a zero-gradient based algorithm which converges to a local maximum point. Unlike conventional distributed schemes which require additional information, our proposed scheme at each base station utilizes only the local CSI to compute its precoding matrices. Through the Monte-Carlo simulation, we show that our proposed algorithm exhibits the performance almost identical to the centralized scheme requiring the global CSI.

Original languageEnglish
Title of host publication2012 IEEE Vehicular Technology Conference, VTC Fall 2012 - Proceedings
DOIs
Publication statusPublished - 2012 Dec 1
Event76th IEEE Vehicular Technology Conference, VTC Fall 2012 - Quebec City, QC, Canada
Duration: 2012 Sep 32012 Sep 6

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other76th IEEE Vehicular Technology Conference, VTC Fall 2012
CountryCanada
CityQuebec City, QC
Period12/9/312/9/6

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ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Choi, H. J., Park, S. H., Lee, S. R., & Lee, I. (2012). Distributed precoding techniques for weighted sum rate maximization in mimo interfering broadcast channels. In 2012 IEEE Vehicular Technology Conference, VTC Fall 2012 - Proceedings [6399062] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VTCFall.2012.6399062