Title :
Performance improvement of OFDM-ROF system with combined adaptive modulation
Author :
Kang, Ning ; Sun, Xuekang ; Liang, Jin ; Gu, Wanyi
Author_Institution :
Sch. of Telecommun. Educ., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Recently, the integration of orthogonal frequency division multiplexing (OFDM) and radio over fiber (RoF) technique emerged the possibility of cost-effective and high data rate wireless network (WiMAX, 4G). However, the nonlinear effects in optical link as well as the multipath fading in wireless transmission can severely degrade the performance of OFDM-ROF system. In this paper, we present a combined adaptive modulation which can combat with both the nonlinear effects and frequency-selected fading. Simulation results show better BER performance compared to conventional modulation schemes.
Keywords :
OFDM modulation; adaptive modulation; fading channels; multipath channels; optical links; optical modulation; radio-over-fibre; OFDM-ROF system; combined adaptive modulation; multipath fading channel; optical link; orthogonal frequency division multiplexing system; radio over fiber technique; wireless network; Adaptive systems; Baseband; Bit error rate; Degradation; Fading; Nonlinear distortion; OFDM modulation; Optical fiber communication; Optical transmitters; Wireless communication; BER; OFDM; Radio over fiber; adaptive modulation;
Conference_Titel :
Global Mobile Congress 2009
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5302-3
Electronic_ISBN :
978-1-4244-5301-6
DOI :
10.1109/GMC.2009.5295867
