A Novel Subspace Based Method for Compensation of Multiple CFOs in Uplink MIMO OFDM Systems

Santra, Avik and Hari, K V S (2017) A Novel Subspace Based Method for Compensation of Multiple CFOs in Uplink MIMO OFDM Systems. In: IEEE COMMUNICATIONS LETTERS, 21 (9). pp. 1993-1996.

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Abstract

The tri-linear data model for an arbitrary multi-user uplink multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system comprising orthogonal frequency division multiplexing access users and co-channel (CC) users is formulated in this letter. A novel subspace-based method for multi-access interference cancellation and CC data separation in multi-user MIMO OFDM systems, utilizing the independent manifolds spanned by user's carrier frequency offset matrix, is proposed in this letter. The system constraints under which the proposed subspace nulling method works are derived, which includes the under-determined cases, where minimum mean square error/zero forcing methods fail.

Item Type:	Journal Article
Publication:	IEEE COMMUNICATIONS LETTERS
Additional Information:	Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering Division of Electrical Sciences > Electrical Communication Engineering > Electrical Communication Engineering - Technical Reports
Date Deposited:	07 Oct 2017 06:07
Last Modified:	07 Oct 2017 06:07
URI:	http://eprints.iisc.ac.in/id/eprint/57983

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