A Novel Scheme to Reduce the ONU's DSP Complexity for IMDD-OFDMA-PON

The orthogonal frequency division multiplexing passive optical network (OFDM-PON) is one of the significant topics for the next generation PON technology, and how to minimize the size of DSP processing and the number of sampling rate is paramount important to realize cost saving. This paper investigates a novel scheme for reducing the ONU's DSP complexity for intensity-modulated and direct-detection (IM-DD)-OFDMA-PON. Results efficiently verify the proposed scheme as well as ensure the transmission performance.