Open AccessSeamless integration of 572-Gb/s signal wireline transmission and 100-GHz wireless delivery
Author(s) -
Xinying Li,
Jianjun Yu,
Ze Dong,
Zizheng Cao,
Nan Chi,
Junwen Zhang,
Yufeng Shao,
Li Tao
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.024364
Subject(s) - phase shift keying , polarization division multiplexing , multiplexing , transmitter , baseband , electronic engineering , physics , wireless , digital signal processing , heterodyne detection , computer science , optics , signal processing , telecommunications , engineering , bit error rate , bandwidth (computing) , channel (broadcasting) , laser
We experimentally demonstrated the seamless integration of 57.2-Gb/s signal wireline transmission and 100-GHz wireless delivery adopting polarization-division-multiplexing quadrature-phase-shift-keying (PDM-QPSK) modulation with 400-km single-mode fiber-28 (SMF-28) transmission and 1-m wireless delivery. The X- and Y-polarization components of optical PDM-QPSK baseband signal are simultaneously up-converted to 100 GHz by optical polarization-diversity heterodyne beating, and then independently transmitted and received by two pairs of transmitter and receiver antennas, which make up a 2x2 multiple-input multiple-output (MIMO) wireless link based on microwave polarization multiplexing. At the wireless receiver, a two-stage down conversion is firstly done in analog domain based on balanced mixer and sinusoidal radio frequency (RF) signal, and then in digital domain based on digital signal processing (DSP). Polarization de-multiplexing is realized by constant modulus algorithm (CMA) based on DSP in heterodyne coherent detection. Our experimental results show that more taps are required for CMA when the X- and Y-polarization antennas have different wireless distance.