Novel subspace methods for blind estimation of multiple CFOs in MIMO-OFDM systems

Santra, A and Hari, KVS (2010) Novel subspace methods for blind estimation of multiple CFOs in MIMO-OFDM systems. In: Signal Processing (ICSP), 2010 IEEE 10th International Conference on , 24-28 Oct. 2010 , Beijing .

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Abstract

The problem of estimating multiple Carrier Frequency Offsets (CFOs) in the uplink of MIMO-OFDM systems with Co-Channel (CC) and OFDMA based carrier allocation is considered. The tri-linear data model for generalized, multiuser OFDM system is formulated. Novel blind subspace based estimation of multiple CFOs in the case of arbitrary carrier allocation scheme in OFDMA systems and CC users in OFDM systems based on the Khatri-Rao product is proposed. The method works where the conventional subspace method fails. The performance of the proposed methods is compared with pilot based Least-Squares method.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 2010 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.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	19 Dec 2011 10:52
Last Modified:	19 Dec 2011 10:52
URI:	http://eprints.iisc.ac.in/id/eprint/38958

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