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Generation of 16-QAM-OFDM Signals Using Selected Mapping Method and Its Application in Optical Millimeter-Wave Access System

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4 Author(s)
Yufeng Shao ; Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai, China ; Nan Chi ; Jingyuan Fan ; Wuliang Fang

A simplified full-duplex 60-GHz optical millimeter-wave access system is proposed and experimentally demonstrated with a 16-QAM-OFDM downlink generated by selected mapping (SLM). The system receiver is realized with optical heterodyne detection and electrical self-mixing down-conversion. In the experiment, 5-Gb/s 16-QAM-OFDM signals are transmitted over 42-km SMF-28 and a 0.4-m wireless channel. The experimental results show that SLM can effectively reduce the peak-to-average power ratio and improve the receiver sensitivity. In addition, the proposed self-mixing down-conversion can simplify the transmitter and receiver configuration, since it eliminates the need for high-frequency microwave source at the central station and local oscillator at the base station.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 15 )

Date of Publication:

Aug.1, 2012

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