Transmit Diversity Scheme for OFDM Systems Using the Odd DFT
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概要
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A new transmission scheme for OFDM systems that uses the odd discrete Fourier transform to provide frequency diversity gain is proposed. Odd DFT allows the transmission of data subcarriers in frequencies that are centred between those employed by the traditional DFT. This fact is exploited to transmit data subcarriers on the group of frequencies that gives better performance using either traditional DFT or odd DFT. As an example, by using this approach a diversity gain up to 5.3dB at a BER of 10-4 in a typical indoor channel model can be achieved.
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