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J Electromagn Eng Sci > Volume 9(3); 2009 > Article
Journal of the Korean Institute of Electromagnetic and Science 2009;9(3):124-129.
DOI: https://doi.org/10.5515/JKIEES.2009.9.3.124   
Sum-Rate Capacity with Fairness in Correlated MIMO Broadcast Channels
Seung-Hwan Lee, Jin-Up Kim
Electronics and Telecommunications Research Institute
Abstract
Although the maximum sum-rate capacity of multiple-input multiple output(MIMO) broadcast channels(BCs) can be achieved by dirty-paper coding(DPC), the results were obtained without fairness considerations in uncorrelated MIMO channels. In this paper, we propose new multiuser scheduling algorithms, which find a best user set for approaching the maximum sum-rate capacity while maintaining fairness among users. We analyze the performance of the proposed algorithms using zero-forcing dirty paper coding(ZF-DPC) in the correlated MIMO BCs for throughput and delay fairness, respectively. Numerical results demonstrate that a large time window can reduce the average throughput difference between users, but it increases head-of-line(HOL) delay jitters in the case of delay fairness.
Key words: Multiple Input Multiple Output(MIMO), Broadcast Channel(BC), Sum-Rate Capacity, Fairness

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