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http://dx.doi.org/10.5515/KJKIEES.2008.19.5.506

A Joint SD-MRC Method for Downlink Performance Improvement at Coverage Boundaries of Cellular Systems  

Lee, Sang-Dae (Department of Electronic Engineering, Sogang University)
Chang, Jae-Won (Department of Electronic Engineering, Sogang University)
Sung, Won-Jin (Department of Electronic Engineering, Sogang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.5, 2008 , pp. 506-514 More about this Journal
Abstract
At coverage boundaries of cellular systems including the recent WiBro standard which operate with full frequency reuse for increased spectral efficiency, interference signals from the base stations(BS) of adjacent cells degrade the receiver performance. In this paper, a detection method for multiple-antenna mobile stations(MS) is proposed for downlink performance improvement at coverage boundaries of cellular systems. For the performance verification, we obtain the probability density function(pdf) of the effective signal-to-interference and noise ratio(SINR) according to the variation of the interference signals from adjacent cells as well as the number of MS antennas, and calculate the transmission efficiency. We also verify the performance of proposed method with simulation results, to demonstrate a significant performance improvement is achieved over the maximal ratio combining(MRC) and spatial demultiplexing(SD) methods in terms of the effective SINR and the spectral efficiency.
Keywords
Maximal Ratio Combing; Spatial Demultiplexing; Multiple Antenna; Intercell Interference; Interference Mitigation;
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