Sample-Spaced and Fractionally-Spaced CIR Estimation Aided Decision Directed Channel Estimation for OFDM and MC-CDMA
Sample-Spaced and Fractionally-Spaced CIR Estimation Aided Decision Directed Channel Estimation for OFDM and MC-CDMA
The achievable performance of decision-directed channel estimation (DDCE) is analysed in the context of both OFDM and MC CDMA systems. Two different estimation methods suitable for both OFDM and MC-CDMA systems are considered, which employ sample-spaced (SS) as well as fractionally-spaced (FS) a posteriori channel impulse response (CIR) estimators. The performance of both estimation methods is compared and it is shown that the DDCE scheme employing the FS-CIR estimator outperforms its SS-CIR estimator-based counterpart. Furthermore, the FS-CIR estimator-based method exhibits higher robustness to various channel parameters such as the channel’s root mean square delay spread. Finally, it is shown that the MC-CDMA system employing the channel estimation scheme advocated outperform its OFDM counterpart.
1916-1920
Akhtman, J.
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Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2005
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Akhtman, J. and Hanzo, L.
(2005)
Sample-Spaced and Fractionally-Spaced CIR Estimation Aided Decision Directed Channel Estimation for OFDM and MC-CDMA.
IEEE VTC'05 (Fall), Intercontinental Hotel, Dallas, United States.
25 - 28 Sep 2005.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The achievable performance of decision-directed channel estimation (DDCE) is analysed in the context of both OFDM and MC CDMA systems. Two different estimation methods suitable for both OFDM and MC-CDMA systems are considered, which employ sample-spaced (SS) as well as fractionally-spaced (FS) a posteriori channel impulse response (CIR) estimators. The performance of both estimation methods is compared and it is shown that the DDCE scheme employing the FS-CIR estimator outperforms its SS-CIR estimator-based counterpart. Furthermore, the FS-CIR estimator-based method exhibits higher robustness to various channel parameters such as the channel’s root mean square delay spread. Finally, it is shown that the MC-CDMA system employing the channel estimation scheme advocated outperform its OFDM counterpart.
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la-lh-sept05-vtc05fall.pdf
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Published date: 2005
Additional Information:
Event Dates: 25-28 September 2005
Venue - Dates:
IEEE VTC'05 (Fall), Intercontinental Hotel, Dallas, United States, 2005-09-25 - 2005-09-28
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 260876
URI: http://eprints.soton.ac.uk/id/eprint/260876
PURE UUID: 2d97f19b-06e7-4328-9dca-4f2c5ac78d01
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Date deposited: 16 May 2005
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
J. Akhtman
Author:
L. Hanzo
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