Probabilistically shaped 64QAM OFDM signal transmission in a heterodyne coherent detection system

2019 ◽  
Vol 434 ◽  
pp. 175-179 ◽  
Author(s):  
Li Zhao ◽  
Ying Zhang ◽  
Wen Zhou
Keyword(s):  
Detection System ◽  
Signal Transmission ◽  
Coherent Detection ◽  
Ofdm Signal

100-Gb/s Fiber–Wireless System in 100-GHz Band Using 64-QAM OFDM Signal Transmission

2021 ◽  
Author(s):  
Pham Tien Dat ◽  
Atsushi Kanno ◽  
Naokatsu Yamamoto ◽  
Tetsuya Kawanishi
Keyword(s):  
Signal Transmission ◽  
Wireless System ◽  
Ofdm Signal

scholarly journals Real-time experimental demonstration of
low-cost VCSEL intensity-modulated 1125Gb/s optical OFDM signal transmission over 25km PON systems

2011 ◽  
Vol 19 (4) ◽  
pp. 2979 ◽  
Author(s):  
E. Hugues-Salas ◽  
R.P. Giddings ◽  
X.Q. Jin ◽  
J. L. Wei ◽  
X. Zheng ◽  
...  
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Signal Transmission ◽  
Experimental Demonstration ◽  
Intensity Modulated ◽  
Ofdm Signal ◽  
Optical Ofdm

Effect of Time-Frequency Disturbance on Performance of Dual-Frequency Laser Coherent Detection System

2016 ◽  
Vol 53 (6) ◽  
pp. 061403 ◽  
Author(s):  
张建华 Zhang Jianhua ◽  
杨德钊 Yang Dezhao ◽  
高洁 Gao Jie ◽  
刘锡民 Liu Ximin
Keyword(s):  
Detection System ◽  
Coherent Detection ◽  
Dual Frequency ◽  
Time Frequency ◽  
Frequency Laser

Mixing Efficiency in Coherent Detection System

2017 ◽  
Vol 54 (10) ◽  
pp. 100605
Author(s):  
谭振坤 Tan Zhenkun ◽  
柯熙政 Ke Xizheng
Keyword(s):  
Detection System ◽  
Coherent Detection ◽  
Mixing Efficiency

Multichannel image-rejection coherent detection system

1990 ◽  
Vol 8 (12) ◽  
pp. 1874-1881 ◽  
Author(s):  
G. Lachs ◽  
R.E. Henning ◽  
Y. Choi ◽  
S.M. Zaidi
Keyword(s):  
Detection System ◽  
Coherent Detection ◽  
Image Rejection

Investigation of aging characteristics in explosive using terahertz time-domain spectroscopy

2019 ◽  
Vol 33 (24) ◽  
pp. 1950272 ◽  
Author(s):  
Wei Shi ◽  
Chengang Dong ◽  
Lei Hou ◽  
Zhiyang Xing ◽  
Qian Sun ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Fourier Transform ◽  
Absorption Spectra ◽  
Time Domain ◽  
Detection System ◽  
Coherent Detection ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Terahertz Absorption ◽  
Spectroscopy System

The terahertz absorption spectrum of the five aging explosive samples (PETN, RDX, HMX, LLM-105 and TATB) was measured and calculated by Terahertz time-domain spectroscopy system (THz-TDS) and air-biased coherent detection system (ZAP-ABCD), respectively. In this paper, compared with the unaging explosive, each aging explosive sample’s terahertz time-domain spectra were obtained and the terahertz absorption spectra were calculated by using Fourier transform and Lambert’s law. The results show that there are several terahertz absorption peaks which were called “fingerprint spectra” for different aging explosive samples in the range of 0.3–6.0 THz spectrum. Meanwhile, the results also show that the locations of the characteristic absorption peaks are not the same. Moreover, the unaging and aging explosive samples have obviously different terahertz absorption spectra.

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