Title :
OFDM Vector Signal Generation Based on Optical Carrier Suppression
Author :
Jiangnan Xiao ; Ziran Zhang ; Xinying Li ; Yuming Xu ; Long Chen ; Jianjun Yu
Author_Institution :
Key Lab. for Inf. Sci. of Electromagn. Waves, Fudan Univ., Shanghai, China
Abstract :
We propose a novel method to generate photonic quadrature-phase-shift-keying (QPSK) orthogonal frequency division multiplexing (OFDM) vector signal using only one Mach-Zehnder modulator, in which the OFDM signal is phase precoded and amplitude precoded according to the square-law characteristic of the photodetector. We theoretically analyze and experimentally demonstrate that this concept of the generation of the QPSK OFDM vector signal can be employed in our system architecture based on our proposed scheme. The results show that the bit-error ratios of the transmission system are less than the forward-error-correction threshold of 3.8 × 10-3. By this scheme, we simplify the configuration and reduce the cost of the OFDM transmission system.
Keywords :
OFDM modulation; error statistics; forward error correction; light transmission; optical communication equipment; optical information processing; optical phase shifters; photodetectors; quadrature phase shift keying; Mach-Zehnder modulator; OFDM transmission system; amplitude precoding; bit-error ratios; forward-error-correction threshold; optical carrier suppression; orthogonal frequency division multiplexing; photodetector; photonic QPSK OFDM vector signal generation; quadrature-phase-shift-keying; square-law characteristic; High-speed optical techniques; Integrated optics; OFDM; Optical fiber communication; Phase shift keying; Photonics; Wireless communication; Orthogonal frequency division multiplexing (OFDM); amplitude precoding; optical carrier suppression (OCS); phase precoding; photonic vector signal generation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2469104
