Joint Carrier-Frequency Offset and Channel Estimation for MIMO-OFDM Transmission

In this paper, we consider a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating over frequency-selective fading channels. We propose a novel scheme for joint carrier-frequency offset (CFO) and channel estimation based on the expectation–maximizat...

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Bibliographic Details
Published in:Wireless personal communications 2008-10, Vol.47 (2), p.303-314
Main Authors: Salari, S., Ardebilipour, M., Ahmadian, M.
Format: Article
Language:English
Subjects:
Applied sciences
Communications Engineering
Computer Communication Networks
Engineering
Exact sciences and technology
Networks
Signal,Image and Speech Processing
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Summary:In this paper, we consider a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating over frequency-selective fading channels. We propose a novel scheme for joint carrier-frequency offset (CFO) and channel estimation based on the expectation–maximization (EM) algorithm. Furthermore, the Cramer-Rao bounds (CRBs) for both CFO and channel estimators are exploited to evaluate the performance of the proposed scheme. Computer simulations show that the proposed algorithm achieves almost ideal performance compared with the CRBs for both channel and frequency offset estimations.
ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-008-9466-5