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- W2109798558 abstract "We describe two classes of simple, effective techniques for reducing the average optical power requirement in intensity-modulated optical systems using multiple BPSK or QPSK subcarriers. The first class of techniques involves block coding between the information bits to be transmitted and the symbol amplitudes modulated onto the subcarriers in order to increase the minimum value of the multiple-subcarrier electrical waveform. The second class of techniques involves replacing the fixed DC bias by a bias signal that varies on a symbol-by-symbol basis. These two classes of techniques can be applied separately or in tandem. The reduction in power requirement increases with the number of subcarriers and, with eight subcarriers, can be as high as about 3.6 dB and 3.2 dB with BPSK and QPSK, respectively. The techniques described are applicable as long as all subcarriers originate from a single transmitter and are symbol-synchronized." @default.
- W2109798558 created "2016-06-24" @default.
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- W2109798558 date "2001-01-01" @default.
- W2109798558 modified "2023-10-16" @default.
- W2109798558 title "Average power reduction techniques for multiple-subcarrier intensity-modulated optical signals" @default.
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- W2109798558 doi "https://doi.org/10.1109/26.974263" @default.
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