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MMSE Receiver for Multiuser Interference Cancellation in Uplink OFDMA

Sreedhar, D and Chockalingam, A (2006) MMSE Receiver for Multiuser Interference Cancellation in Uplink OFDMA. In: 63rd IEEE Vehicular Technology Conference,, May 07-10, 2006, Melbourne, Australia, pp. 2125-2129.

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Abstract

In uplink orthogonal frequency division multiple access (OFDMA) systems, multiuser interference (MUI) occurs due to different carrier frequency offsets (CFO) of different users at the receiver. In this paper, we present a minimum mean square error (MMSE) based approach to MUI cancellation in uplink OFDMA. We derive a recursion to approach the MMSE solution. We present a structure-wise and performance-wise comparison of this recursive MMSE solution with a linear PIC receiver as well as other detectors recently proposed in the literature. We show that the proposed recursive MMSE solution encompasses several known detectors in the literature as special cases.

Item Type: Conference Paper
Additional Information: Copyright 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Uplink OFDMA;carrier frequency offset;multiuser interference; MMSE receiver;circular convolution.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 31 Aug 2010 05:01
Last Modified: 19 Sep 2010 06:12
URI: http://eprints.iisc.ernet.in/id/eprint/30445

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