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A cost-effective method of multi-receiver optical orthogonal frequency-division multiplexing(OOFDM) system is proposed to reduce the requirement for the speed of the receiver and the size of fast Fourier transform(FFT).The sampling rate of analog-to-digital converters(ADCs) can be reduced to 1/N of the original signal bandwidth in an N-receiver system.Aided by signal predistortion at the transmitter, aliasing-free signal can be retrieved independently and directly at the low speed receivers.A back-to-back experimental result is given for a two-receiver system.The effect of the electrical filters added before the ADC is studied and the analysis for filters optimization is given.
A cost-effective method of multi-receiver optical orthogonal frequency-division multiplexing (OOFDM) system is proposed to reduce the requirement for the speed of the receiver and the size of fast Fourier transform (FFT). The sampling rate of analog-to- digital converters (ADCs) can be reduced to 1 / N of the original signal bandwidth in an N-receiver system. Aided by signal predistortion at the transmitter, aliasing-free signals can be retrieved independently and directly at the low speed receivers. -to-back experimental result is given for a two-receiver system. The effect of the electrical filters added before the ADC is studied and the analysis for filters optimization is given.