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Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA

Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA
Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA
The performance of a decision-directed channel estimation scheme is analyzed in the context of both OFDM and MC-CDMA systems. A difficulty associated with the employment of the Least Squares (LS) approach to the problem of a posteriori channel estimation in the context of a MC-CDMA system is described and a suitable MMSE-based estimator is proposed instead. It is demonstrated that the computational complexity associated with the MMSE estimation method proposed is relatively high in compararison to that of the conventional LS technique. Thus a low-complexity version of the MMSE estimator is proposed. The MC-CDMA system using a low-complexity MMSE estimator proposed is shown to outperform the corresponding OFDM-based scheme.
528-532
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Akhtman, J. and Hanzo, L. (2005) Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA. IEEE VTC'05 (Spring), Sweden. 30 May - 01 Jun 2005. pp. 528-532 .

Record type: Conference or Workshop Item (Paper)

Abstract

The performance of a decision-directed channel estimation scheme is analyzed in the context of both OFDM and MC-CDMA systems. A difficulty associated with the employment of the Least Squares (LS) approach to the problem of a posteriori channel estimation in the context of a MC-CDMA system is described and a suitable MMSE-based estimator is proposed instead. It is demonstrated that the computational complexity associated with the MMSE estimation method proposed is relatively high in compararison to that of the conventional LS technique. Thus a low-complexity version of the MMSE estimator is proposed. The MC-CDMA system using a low-complexity MMSE estimator proposed is shown to outperform the corresponding OFDM-based scheme.

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More information

Published date: 2005
Additional Information: Event Dates: 30 May - 1 June 2005
Venue - Dates: IEEE VTC'05 (Spring), Sweden, 2005-05-30 - 2005-06-01
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 260875
URI: https://eprints.soton.ac.uk/id/eprint/260875
PURE UUID: 559ca00b-8841-4cd0-a884-ba1a5fe0d07f
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 16 May 2005
Last modified: 06 Jun 2018 13:14

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Contributors

Author: J. Akhtman
Author: L. Hanzo ORCID iD

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