Phase-shift assisted OFDM-RoF transmission employing optical heterodyning

A phase-shift Assisted OFDM-RoF system employing optical heterodyning is proposed and experimentally demonstrated. By using the phase shift of optical signal to represent the sign data of the OFDM signal, a significant improvement of the power efficiency can be obtained compared to the conventional DCO-OFDM. 10GHz/1.8Gbps 4QAM PSA-OFDM RoF transmission over 10km SMF and 2m wireless is experimentally achieved.

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