STC-MIMO Block Spread OFDM in Frequency Selective Rayleigh Fading Channels

Chicharo, J; Dutkiewicz, E; Tran, LC; Huang, X

STC-MIMO Block Spread OFDM in Frequency Selective Rayleigh Fading Channels

Chicharo, J Dutkiewicz, E Tran, LC Huang, X

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Publication Type:: Conference
Issue Date:: 2007-03-12T22:05:44Z

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Field	Value	Language
dc.contributor.author	Chicharo, J	en_AU
dc.contributor.author	Dutkiewicz, E	en_AU
dc.contributor.author	Tran, LC	en_AU
dc.contributor.author	Huang, X	en_AU
dc.date.accessioned	2007-03-12T22:05:44Z
dc.date.accessioned	2012-12-15T02:29:38Z
dc.date.available	2007-03-12T22:05:44Z
dc.date.available	2012-12-15T02:29:38Z
dc.date.issued	2007-03-12T22:05:44Z
dc.identifier.uri	http://hdl.handle.net/10453/19608
dc.description.abstract	In this paper, we expand the idea of spreading the transmitted symbols in OFDM systems by unitary spreading matrices based on the rotated Hadamard or rotated Discrete Fourier Transform (DFT) matrices proposed in the literature to apply to Space-Time Coded Multiple-Input Multiple-Output OFDM(STC-MIMO-OFDM) systems. We refer the resulting systems to as STC-MIMO Block Spread OFDM (STC-MIMO-BOFDM) systems. In the proposed systems, a multi-dimensional diversity, including time, frequency, space and modulation diversities, can be used, resulting in better bit error performance in frequency selective Rayleigh fading channels compared to the conventional OFDM systems with or without STCs. Simulations carried out with the Alamouti code confirm the advantage of the proposed STC-MIMO-BOFDM systems.	en_AU
dc.format.extent	271180 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en_AU
dc.relation.replaces	http://hdl.handle.net/2100/137
dc.title	STC-MIMO Block Spread OFDM in Frequency Selective Rayleigh Fading Channels	en_AU
dc.type	Conference
utslib.copyright.status	open_access

Abstract:

In this paper, we expand the idea of spreading the transmitted symbols in OFDM systems by unitary spreading matrices based on the rotated Hadamard or rotated Discrete Fourier Transform (DFT) matrices proposed in the literature to apply to Space-Time Coded Multiple-Input Multiple-Output OFDM(STC-MIMO-OFDM) systems. We refer the resulting systems to as STC-MIMO Block Spread OFDM (STC-MIMO-BOFDM) systems. In the proposed systems, a multi-dimensional diversity, including time, frequency, space and modulation diversities, can be used, resulting in better bit error performance in frequency selective Rayleigh fading channels compared to the conventional OFDM systems with or without STCs. Simulations carried out with the Alamouti code confirm the advantage of the proposed STC-MIMO-BOFDM systems.

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http://hdl.handle.net/10453/19608