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2003•Journal of Circuits and SystemsRequires access

A Novel Design of OFDM-based Space-frequency Codes

Zhijian Yu

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Abstract

A novel design of OFDM-based space-frequency codes is proposed such that the maximum achievable diversity gain is available. Because using OFDM, a frequency-selective fading channel can be transformed into multiple frequency-flat fading sub-channels, in the coding process, spatial diversity (due to multiple antennas) is integrated with frequency diversity (due to delay spread), therefore, the proposed code can provide higher diversity gain than space-time code alone.

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What this paper is about

A novel design of OFDM-based space-frequency codes is proposed such that the maximum achievable diversity gain is available. Because using OFDM, a frequency-selective fading channel can be transformed into multiple frequency-flat fading sub-channels, in the coding process, spatial diversity (due to multiple antennas) is integrated with frequency diversity (due to delay spread), therefore, the proposed code can provide higher diversity gain than space-time code alone.

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Available abstract

A novel design of OFDM-based space-frequency codes is proposed such that the maximum achievable diversity gain is available. Because using OFDM, a frequency-selective fading channel can be transformed into multiple frequency-flat fading sub-channels, in the coding process, spatial diversity (due to multiple antennas) is integrated with frequency diversity (due to delay spread), therefore, the proposed code can provide higher diversity gain than space-time code alone.

Key concepts: Diversity scheme, Fading, Orthogonal frequency-division multiplexing, Antenna diversity, Diversity gain, Computer science, Electronic engineering, Time diversity

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