Experimental Verification of a 49mW Ultra-Low Power Consumption for 32-Parallel 64-Point FFT Adopted for Real-Time IMDD OFDM-PON

A novel 32-parallel 64-point FFT architecture with 49mW ultra-low power consumption for real-time IMDD OFDM-PON is proposed. The results show that 89.85% FFT module power can be saved than Spiral FPGA design.