Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels

N. K. Noordin, Borhanuddin M. Ali, Sudhansu S. Jamuar, Mahamod Ismail

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper we present an adaptive multiple antenna selection (AdMAS) employing a maximum of 4 transmit (4 Tx) and 1 receive (1 Rx) antenna in conjunction with coded space-time-frequency (STF) orthogonal frequency division multiplexing (OFDM) over Wireless Local Area Network (WLAN) IEEE 802.11 channels. Our coded STF-OFDM Is a product of 4-QAM STF block code which has been concatenated with convolutional codes of rate 1/2 with length of 5. In transmitting data we adaptively select channel with least fade and turn off the most faded channel at the transmitter side. We determine levels of fading of each transmitter channel based on the statistical average of the channel impulse response (CIR). We also compare results when level of fading is based on the variance of the CIR. Results show that, the employment of AdMAS does not significantly contribute to performance improvement (less than a dB gain), either adapting to mean or variance-based scheme, at shorter delay spreads (e.g. 100 ns). However at longer delay spreads (e.g. 1.3 μs) our proposed AdMAS scheme outperforms coded STF-OFDM scheme by as much as 4 dB to achieve a BER of 10-3.

Original languageEnglish
Title of host publication2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings
Pages331-335
Number of pages5
Volume2005
DOIs
Publication statusPublished - 2005
Event2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Johor
Duration: 20 Dec 200521 Dec 2005

Other

Other2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005
CityJohor
Period20/12/0521/12/05

Fingerprint

Wireless local area networks (WLAN)
Fading channels
Orthogonal frequency division multiplexing
Antennas
Impulse response
Transmitters
Convolutional codes
Block codes
Quadrature amplitude modulation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Noordin, N. K., Ali, B. M., Jamuar, S. S., & Ismail, M. (2005). Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels. In 2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings (Vol. 2005, pp. 331-335). [1607837] https://doi.org/10.1109/APACE.2005.1607837

Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels. / Noordin, N. K.; Ali, Borhanuddin M.; Jamuar, Sudhansu S.; Ismail, Mahamod.

2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings. Vol. 2005 2005. p. 331-335 1607837.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Noordin, NK, Ali, BM, Jamuar, SS & Ismail, M 2005, Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels. in 2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings. vol. 2005, 1607837, pp. 331-335, 2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005, Johor, 20/12/05. https://doi.org/10.1109/APACE.2005.1607837
Noordin NK, Ali BM, Jamuar SS, Ismail M. Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels. In 2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings. Vol. 2005. 2005. p. 331-335. 1607837 https://doi.org/10.1109/APACE.2005.1607837
Noordin, N. K. ; Ali, Borhanuddin M. ; Jamuar, Sudhansu S. ; Ismail, Mahamod. / Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels. 2005 Asia-Pacific Conference on Applied Electromagnetics, APACE 2005 - Proceedings. Vol. 2005 2005. pp. 331-335
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