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 publicationIEEE Vehicular Technology Conference
DOIs
Publication statusPublished - 2012 Dec 1
Event76th IEEE Vehicular Technology Conference, VTC Fall 2012 - Quebec City, QC, Canada
Duration: 2012 Sep 32012 Sep 6

Other

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

Fingerprint

Broadcast Channel
Precoding
Channel state information
Channel State Information
Weighted Sums
Base stations
Linear Precoding
Multiple-input multiple-output (MIMO)
Monte Carlo Simulation
Interference
Gradient
Converge
Zero
Processing

ASJC Scopus subject areas

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

Cite this

Distributed precoding techniques for weighted sum rate maximization in mimo interfering broadcast channels. / Choi, Hyun Joo; Park, Seok Hwan; Lee, Sang Rim; Lee, Inkyu.

IEEE Vehicular Technology Conference. 2012. 6399062.

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

Choi, HJ, Park, SH, Lee, SR & Lee, I 2012, Distributed precoding techniques for weighted sum rate maximization in mimo interfering broadcast channels. in IEEE Vehicular Technology Conference., 6399062, 76th IEEE Vehicular Technology Conference, VTC Fall 2012, Quebec City, QC, Canada, 12/9/3. https://doi.org/10.1109/VTCFall.2012.6399062
Choi, Hyun Joo ; Park, Seok Hwan ; Lee, Sang Rim ; Lee, Inkyu. / Distributed precoding techniques for weighted sum rate maximization in mimo interfering broadcast channels. IEEE Vehicular Technology Conference. 2012.
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