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Coded space-time-frequency OFDM over IEEE 802.11 fading channels


Noordin, Nor Kamariah and Mohd Ali, Borhanuddin and Jamuar, Sudhanshu Shekhar and Ismail, Mahamod (2005) Coded space-time-frequency OFDM over IEEE 802.11 fading channels. In: 2005 Asia-Pacific Conference on Communications, 3-5 Oct. 2005, Perth, Western Australia, Australia. (pp. 1078-1082).


In this paper we present 4 transmit and 1 receive (4Tx:1Rx) antenna system of coded space-time-frequency in conjunction with orthogonal frequency division multiplexing (coded STF-OFDM). We concatenate STF block code with channel coding namely convolutional code of rate 1/2 with length 5 to combat channel impairment. We compare our coded STF scheme with ST-OFDM and SF-OFDM over IEEE 802.11 multipath channel under delay spread of 700 ns and 1 us in outdoor environments. Results show that coded STF-OFDM scheme outperforms other schemes by as much as 8 dB (against ST-OFDM) in spread of 700 ns. The scheme also outperforms others over a severe channel with delay spread of 1 us but is almost comparable to coded SF-OFDM.

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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1109/APCC.2005.1554230
Publisher: IEEE
Keywords: Coded space-time-frequency; STF-OFDM; IEEE 802.11; ST-OFDM; SF-OFDM
Depositing User: Nabilah Mustapa
Date Deposited: 14 Jul 2016 09:41
Last Modified: 14 Jul 2016 09:41
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/APCC.2005.1554230
URI: http://psasir.upm.edu.my/id/eprint/47753
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