Stage-dependent Minimum Bit Resolution Maps of Full-parallel Pipelined FFT/IFFT for Real-time Optical OFDM Transceivers

Maps of FFT/IFFT stage-dependent minimum bit resolutions against ADC/DAC resolutions and modulation formats are numerically identified and experimentally verified, which ease OOFDM transceiver designs and reduce FPGA logic resource usages without degrading overall transceiver performances.