| Sum-Rate Capacity with Fairness in Correlated MIMO Broadcast Channels |
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Seung-Hwan Lee, Jin-Up Kim |
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Electronics and Telecommunications Research Institute |
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| Abstract |
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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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