OFDMA Capacity Analysis in MIMO Channels

Author

Li, Hongxiang ; Ru, Guanying ; Kim, Younsun ; Liu, Hui

Author_Institution

Dept. of Electr. & Comput. Eng., North Dakota State Univ., Fargo, ND, USA

Volume

56

Issue

9

fYear

2010

Firstpage

4438

Lastpage

4446

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.

Keywords

MIMO communication; frequency division multiple access; information theory; multiuser channels; wireless channels; MIMO channels; OFDMA capacity analysis; downlink channels; general multiuser multicarrier multiple-input multiple-output system; information theory; orthogonal frequency division multiple access; uplink channels; Covariance matrix; Decoding; Downlink; Eigenvalues and eigenfunctions; Frequency conversion; MIMO; Next generation networking; OFDM; Receivers; Resource management; Signal to noise ratio; Sufficient conditions; WiMAX; Wireless networks; Downlink (DL); multiple-input multiple-output (MIMO); optimality; orthogonal frequency division multiple access (OFDMA); uplink (UL);

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2010.2054710

Filename

5550393