Antenna placement optimization for distributed antenna systems

Eunsung Park, Sang Rim Lee, Inkyu Lee

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

In this paper, we propose new algorithms to determine the antenna location for downlink distributed antenna systems (DASs) in single-cell and two-cell environments. We consider the composite fading channel which includes small and large scale fadings. First, for the single-cell DAS, we formulate the optimization problem of distributed antenna (DA) port locations by maximizing the lower bound of the expected signal to noise ratio (SNR). In comparison to the conventional algorithm based on the squared distance criterion which requires an iterative method, our problem generates a closed form solution. Next, for the two-cell DAS, we propose a gradient ascent algorithm which determines the optimum DA locations by maximizing the lower bound of the expected signal to leakage ratio (SLR). In our work, we consider selection transmission, maximal ratio transmission and zero-forcing beamforming (ZFBF) under sum power constraint and study equal gain transmission and scaled ZFBF under per-antenna power constraint. Simulation results show that our proposed algorithms based on both the SNR and the SLR criteria offer a capacity gain over the conventional centralized antenna systems.

Original languageEnglish
Article number6205599
Pages (from-to)2468-2477
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume11
Issue number7
DOIs
Publication statusPublished - 2012 Jun 4

Fingerprint

Placement
Antenna
Antennas
Optimization
Zero-forcing
Cell
Beamforming
Leakage
Signal to noise ratio
Lower bound
Power Sum
Fading (radio)
Ascent
Fading Channels
Fading
Iterative methods
Closed-form Solution
Fading channels
Composite
Gradient

Keywords

  • antenna placement
  • Distributed antenna systems

ASJC Scopus subject areas

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

Cite this

Antenna placement optimization for distributed antenna systems. / Park, Eunsung; Lee, Sang Rim; Lee, Inkyu.

In: IEEE Transactions on Wireless Communications, Vol. 11, No. 7, 6205599, 04.06.2012, p. 2468-2477.

Research output: Contribution to journalArticle

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