TY - JOUR
T1 - 64QAM vector radio-frequency signal generation based on phase precoding and optical carrier suppression modulation
AU - Dong, Ze
N1 - Publisher Copyright:
© 2009-2012 IEEE.
PY - 2016/12
Y1 - 2016/12
N2 - We propose a 64-quadrature-amplitude-modulation (QAM) vector radio-frequency (RF) signal generation and detection via one intensity Mach-Zehnder modulator (MZM) by using optical carrier suppression modulation. In order to obtain an ordinary QAM modulated RF signal after the square-law detection of the photodiode, amplitude preequalization and phase precoding technique are employed. The 1Gbaud 64QAM vector signals performed on various RF carrier frequencies from 20 to 444 GHz are experimentally demonstrated. The bit-error-rate (BER) performance of unbalanced phase precoding adopting 64QAM modulation is investigated. The digital filter based on blind Decision-Directed Least-Mean-Squares (DD-LMS) algorithm is the key digital-signal-processing, which is used to improve system performance. This concept of the generation of 64QAM-modulated vector signal can be employed in the radio-over-fiber (ROF) system.
AB - We propose a 64-quadrature-amplitude-modulation (QAM) vector radio-frequency (RF) signal generation and detection via one intensity Mach-Zehnder modulator (MZM) by using optical carrier suppression modulation. In order to obtain an ordinary QAM modulated RF signal after the square-law detection of the photodiode, amplitude preequalization and phase precoding technique are employed. The 1Gbaud 64QAM vector signals performed on various RF carrier frequencies from 20 to 444 GHz are experimentally demonstrated. The bit-error-rate (BER) performance of unbalanced phase precoding adopting 64QAM modulation is investigated. The digital filter based on blind Decision-Directed Least-Mean-Squares (DD-LMS) algorithm is the key digital-signal-processing, which is used to improve system performance. This concept of the generation of 64QAM-modulated vector signal can be employed in the radio-over-fiber (ROF) system.
KW - Photonic vector signal
KW - optical carrier suppression.
KW - precoding
KW - preequalization
KW - radio frequency communication
UR - http://www.scopus.com/inward/record.url?scp=85012991857&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2016.2630306
DO - 10.1109/JPHOT.2016.2630306
M3 - Article
AN - SCOPUS:85012991857
SN - 1943-0655
VL - 8
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 6
M1 - 7752811
ER -