Title :
MAMSK-OFDM Signal for RoF Access With Increased Tolerance Toward Frequency Offset
Author :
Lijia Zhang ; Bo Liu ; Xiangjun Xin ; Yongjun Wang
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A novel multi-amplitude minimum shift keying (MAMSK) orthogonal frequency division multiplexing (OFDM) signal is proposed for 60-GHz radio-over-fiber (RoF) access system. It can increase the tolerance toward frequency offset of an OFDM signal due to the faster roll-off side-lobe. In the experiment, a 3.21-Gb/s 2AMSK-OFDM signal is transmitted over 22 km single mode fiber (SMF) and 5 m air link successfully. Compared with a conventional 8QAM-OFDM signal, the signal-to-interference ratio (SIR) of 2AMSK-OFDM is improved by 11.5 dB at a frequency offset of 0.15. The performance is improved by 1.7 dB under a normalized frequency offset (FO) of 0.2.
Keywords :
OFDM modulation; minimum shift keying; optical communication; radio-over-fibre; 2AMSK-OFDM signal; MAMSK-OFDM signal; RoF access; air link; bit rate 3.21 Gbit/s; distance 22 km; distance 5 m; frequency 60 GHz; frequency offset; increased tolerance; multiamplitude minimum shift keying; orthogonal frequency division multiplexing; radio-over-fiber access; roll-off side-lobe; signal-to-interference ratio; single mode fiber; Adaptive optics; Modulation; OFDM; Optical fibers; Optical receivers; Signal to noise ratio; Continuous phase modulation; multiamplitude minimum shift keying; radio over fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2239637
