Title :
Spectrum efficiency improvement of directly detected OFDM based on balance receiver
Author :
Tang, Chao ; Chen, Hongwei ; Chen, Minghua ; Xie, Shizhong
Author_Institution :
State Key Laboratory on Integrated Optoelectronics, Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Abstract :
A novel optical single-sideband DD-OFDM system based on balance receiver is proposed and demonstrated. With elimination of inter-modulation distortion (IMD) near the optical carrier, our system achieves spectrum efficiency about 1.54 bps/Hz with 4QAM mapping and CSPR is improved by 3 dB with negligible EVM penalty.
Keywords :
Amplitude modulation; Baseband; OFDM modulation; Optical distortion; Optical filters; Optical modulation; Optical noise; Optical receivers; Optical transmitters; Signal generators;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
