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Joint estimation of synchronization impairments in MIMO-OFDM system

Jose, Renu and Hari, KVS (2012) Joint estimation of synchronization impairments in MIMO-OFDM system. In: 2012 National Conference on Communications (NCC), 3-5 Feb. 2012, Kharagpur.

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Official URL: http://dx.doi.org/10.1109/NCC.2012.6176835

Abstract

A joint Maximum Likelihood (ML) estimation algorithm for the synchronization impairments such as Carrier Frequency Offset (CFO), Sampling Frequency Offset (SFO) and Symbol Timing Error (STE) in single user MIMO-OFDM system is investigated in this work. A received signal model that takes into account the nonlinear effects of CFO, SFO, STE and Channel Impulse Response (CIR) is formulated. Based on the signal model, a joint ML estimation algorithm is proposed. Cramer-Rao Lower Bound (CRLB) for the continuous parameters CFO and SFO is derived for the cases of with and without channel response effects and is used to compare the effect of coupling between different estimated parameters. The performance of the estimation method is studied through numerical simulations.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to IEEE.
Keywords: MIMO-OFDM; Synchronization; Channel Impulse Response; Carrier Frequency Offset; Sampling Frequency Offset; Symbol Timing Error; Cramer-Rao Lower Bound
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Francis Jayakanth
Date Deposited: 19 Dec 2013 10:15
Last Modified: 19 Dec 2013 10:15
URI: http://eprints.iisc.ac.in/id/eprint/48034

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