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Low Complexity Antenna Selection based MIMO Scheduling Algorithms for Uplink Multiuser MIMO/FDD System  

Kim, Yo-Han (연세대학교 전기전자공학과 이동통신 연구실)
Cho, Sung-Yoon (연세대학교 전기전자공학과 이동통신 연구실)
Lee, Taek-Ju (연세대학교 전기전자공학과 이동통신 연구실)
Kim, Dong-Ku (연세대학교 전기전자공학과 이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.12C, 2007 , pp. 1164-1174 More about this Journal
Abstract
Antenna selection based MIMO schedulers are proposed to achieve the optimal performance with low complexity in uplink multiuser MIMO/FDD system. In this paper, three heuristic schedulers are proposed to approach the optimal performance which is achieved by the optimal Brute-Force Scheduler. Two search methods called sub-set and full-set way are also discussed to set up the antenna channels to be the candidates of the scheduler. Simulation results show that the sum rate and BER performance of the proposed CSS and SOAS schemes are about the same to that of the brute-force scheduler with affordable complexity, while RC-SOAS with further reduced complexity achieves almost the optimal performance in the case of small number of antennas. Moreover, the complexity can be additionally reduced by the sub-set search method when the number of transmit and receive antennas are 2 respectively, which is applicable in the realistic systems.
Keywords
Multiuser MIMO; Uplink; FDD; Antenna selection; Scheduler; Complexity;
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