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A full rate concatenated space-frequency and space-time OFDM over Naftali fading channels


Citation

Noordin, Nor Kamariah and Mohd Ali, Borhanuddin and Jamuar, Sudhanshu Shekhar and Ismail, Mahamod (2005) A full rate concatenated space-frequency and space-time OFDM over Naftali fading channels. In: 2005 IEEE Region 10 Conference (TENCON 2005), 21-24 Nov. 2005, Crown Promenade Hotel Melbourne, Australia. .

Abstract

In this paper we investigate 2 transmit and 1 receive (2Tx:1Rx) space-frequency orthogonal frequency division multiplexing (SF-OFDM) and space-time OFDM (ST-OFDM) concatenated with convolutional channel coding as a redundancy method to combat channel impairments. We built our SF and ST-OFDM on top of our coded OFDM (COFDM) with coding rate of 1/4 and constraint length of 10. We simulate our concatenated SF-OFDM and ST-OFDM over a multipath fading channel using Naftali 802.11 channel model under different delay spreads in relation to outdoor environment. Concatenated SF- OFDM performs slightly better than ST-OFDM at delay spread of 2.0 microseconds, but both are almost comparable at all other delay spreads. These two schemes outperforms other schemes such as single antenna coded OFDM and Alamouti's Space-Time Block Code (STBC) under these conditions by as much as 10 dB at BER of 104.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1109/TENCON.2005.300852
Publisher: IEEE
Keywords: Space-frequency; Space-time; OFDM; Naftali; Alamouti's Space-Time Block Code (STBC)
Depositing User: Nabilah Mustapa
Date Deposited: 21 Jun 2016 04:55
Last Modified: 21 Jun 2016 04:55
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/TENCON.2005.300852
URI: http://psasir.upm.edu.my/id/eprint/47631
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