The clipping penalty in fiber-based combined AM-VSB and compressed-digital-video transmission systems

A hybrid CATV optical link is operated with 58 AM subcarriers and 21 digital subcarriers. Differential quadrature-phase-shift-keyed (DQPSK) transmission suffers only a 2 dB penalty due to clipping distortion when operated at -6 dBm received optical power.<<ETX>>

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