OFDMA capacity analysis in MIMO channels

Authors:
Hongxiang Li;Guanying Ru;Younsun Kim;Hui Liu
Affiliations:
Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND;Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND;Samsung Electronics, Korea;Department of Electrical Engineering, University of Washington, Seattle, WA
Venue:
IEEE Transactions on Information Theory
Year:
2010

Citing 15
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Abstract

In this paper, the performance of orthogonal frequency division multiple access orthogonal frequency division multiple access (OFDMA) is studied in the context of the general multiuser multicarrier multiple-input multiple-output (MIMO) (M3) system for both uplink (UP) and downlink (DL) channels. The relationship between OFDMA and the optimal M3 solution is investigated from an information theoretical point of view. Specifically, the necessary and sufficient conditions of OFDMA being the capacity-maximizing M3 transmission scheme is derived. In addition, OFDMA optimality is explicitly analyzed in some special cases.