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BER Analysis of Uplink OFDMA in the Presence of Carrier Frequency and Timing Offsets on Rician Fading Channels

Raghunath, K and Itankar, Yogendra U and Chockalingam, A and Mallik, Ranjan K (2011) BER Analysis of Uplink OFDMA in the Presence of Carrier Frequency and Timing Offsets on Rician Fading Channels. In: IEEE Transactions on Vehicular Technology, 60 (9). pp. 4392-4402.

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Abstract

In orthogonal frequency-division multiple access (OFDMA) on the uplink, the carrier frequency offsets (CFOs) and/or timing offsets (TOs) of other users with respect to a desired user can cause multiuser interference (MUI). Analytically evaluating the effect of these CFO/TO-induced MUI on the bit error rate (BER) performance is of interest. In this paper, we analyze the BER performance of uplink OFDMA in the presence of CFOs and TOs on Rician fading channels. A multicluster multipath channel model that is typical in indoor/ultrawideband and underwater acoustic channels is considered. Analytical BER expressions that quantify the degradation in BER due to the combined effect of both CFOs and TOs in uplink OFDMA with M-state quadrature amplitude modulation (QAM) are derived. Analytical and simulation BER results are shown to match very well. The derived BER expressions are shown to accurately quantify the performance degradation due to nonzero CFOs and TOs, which can serve as a useful tool in OFDMA system design.

Item Type: Journal Article
Additional Information: Copyright 2011 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: Bit error rate (BER) analysis;carrier frequency offset (CFO)/timing offset (TO);multiuser interference (MUI); Rician fading;uplink orthogonal frequency-division multiple access (OFDMA)
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 03 Feb 2012 06:02
Last Modified: 03 Feb 2012 06:02
URI: http://eprints.iisc.ernet.in/id/eprint/43397

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