Fiber-Wireless-Fiber Link for DFT-Spread OFDM Signal Transmission at $W$ -Band

In this letter, we propose to transmit a discrete Fourier transform-spread (DFT-spread) optical orthogonal frequency division multiplexing (OFDM) signal in a fiber-wireless-fiber integration system at W-band enabled by photonic millimeter-wave generation and demodulation techniques. Experimental results show that the bit error ratio performance of the OFDM signal over fiber-wireless-fiber link is significantly improved after the DFT-spread technique is applied to simultaneously overcome power attenuation in frequency domain and reduce the peak-to-average power ratio of the OFDM signal.