Double-Sideband Suppressed-Carrier Amplitude Modulation and Coherent Detection

1995 ◽  
pp. 73-78
Author(s):  
Steven A. Tretter
Keyword(s):  
Amplitude Modulation ◽  
Coherent Detection

Long-haul WDM transmission of 448 Gbit/s polarisation-division multiplexed 16-ary quadrature amplitude modulation using coherent detection

2011 ◽  
Vol 47 (17) ◽  
pp. 973 ◽  
Author(s):  
J. Renaudier ◽  
W. Idler ◽  
O. Bertran-Pardo ◽  
F. Buchali ◽  
K. Schuh ◽  
...  
Keyword(s):  
Amplitude Modulation ◽  
Quadrature Amplitude Modulation ◽  
Coherent Detection ◽  
Wdm Transmission

scholarly journals High Capacity 64-Quadrature Amplitude Modulation Based Optical Coherent Transceiver for 60 GHz Radio Over Fiber System

2021 ◽  
Author(s):  
Devendra Chack ◽  
SUNIL NARAYAN THOOL
Keyword(s):  
Amplitude Modulation ◽  
High Capacity ◽  
Quadrature Amplitude Modulation ◽  
Data Rate ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Optical Heterodyne ◽  
60 Ghz ◽  
Error Vector Magnitude ◽  
Bandwidth Utilization

Abstract Today’s world demands for maximum bandwidth utilization in the area of optical fiber network to achieve serious progress due to data consumption has been grown by > 25% as compared to last year. 5G system is one of the promising technology cater for high bandwidth utilization between multiple transceivers and have the advantages to operate in the milli-meter wave (mm-wave) of 60 GHz. There is much interest of photonic technique such as optical heterodyne coherent detection to produce mm-wave frequencies. We propose a 60 GHz radio over fiber (RoF) link using 168 Gb/s high capacity input data rate based 64-Quadrature amplitude modulation (64-QAM), coherent detection using optical heterodyning and advanced digital signal processing (ADSP) based system. An optimized version of optical heterodyne technique is used to derive 60 GHz radio frequency (RF) signal for connecting radio nodes over wireless link. In order to compensate the irregularities effect of standard signal mode fiber (SSMF), a novel ADSP technique is used which allows good improvement in the spectral signal efficiency and achieved longer distance communication. The ADSP technique plays a key role to achieve high capacity data rate requirements for forthcoming 5G technologies. The proposed RoF system shows that an error free transmission is accomplished over 170 km SSMF and achieved BER is 2.7×10-3 against 7.015 % error vector magnitude (EVM) with 30 dB Signal to Noise ratio (SNR).

Synthesis of 16 Quadrature Amplitude Modulation Using Polarization-Multiplexing QPSK Modulator

2011 ◽  
Vol E94-B (7) ◽  
pp. 1809-1814 ◽  
Author(s):  
Isao MOROHASHI ◽  
Takahide SAKAMOTO ◽  
Masaaki SUDO ◽  
Atsushi KANNO ◽  
Akito CHIBA ◽  
...  
Keyword(s):  
Amplitude Modulation ◽  
Quadrature Amplitude Modulation ◽  
Polarization Multiplexing
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