Abstract: A computationally efficient IFFT implementation for asymmetrically clipped optical OFDM transmitter is proposed and implemented in a Field-Programmable Gate Array. The overall computational ...

While assuming channel knowledge on the transmitter side, this approach allows basic OFDM signal processing to be used on the receiver side for channel estimation, equalization, and synchronization.

The receiver conducts the reversed operation to the transmitter, and to decompose the amplitude and phase of the subcarrier to the digital signal, where the FFT transform is used. 3.2 OFDM modulation ...