132-Gb/s Photonics-Aided Single-Carrier Wireless Terahertz-Wave Signal Transmission at 450GHz Enabled by 64QAM Modulation and Probabilistic Shaping

2019 ◽  
Author(s):  
Xinying Li ◽  
Jianjun Yu ◽  
Li Zhao ◽  
Wen Zhou ◽  
Kaihui Wang ◽  
...  
Keyword(s):  
Signal Transmission ◽  
Terahertz Wave ◽  
Wave Signal ◽  
Single Carrier

scholarly journals Photonics-aided 2 × 2 MIMO wireless terahertz-wave signal transmission system with optical polarization multiplexing

2017 ◽  
Vol 25 (26) ◽  
pp. 33236 ◽  
Author(s):  
Xinying Li ◽  
Jianjun Yu ◽  
Kaihui Wang ◽  
Wen Zhou ◽  
Jiao Zhang
Keyword(s):  
Signal Transmission ◽  
Terahertz Wave ◽  
Transmission System ◽  
Optical Polarization ◽  
Wave Signal ◽  
Polarization Multiplexing

Stable fiber delivery of Terahertz wave signal by fast phase compensation system

2014 ◽  
Author(s):  
Xiaocheng Wang ◽  
Zhangweiyi Liu ◽  
Dongning Sun ◽  
Yi Dong ◽  
Weisheng Hu
Keyword(s):  
Terahertz Wave ◽  
Compensation System ◽  
Phase Compensation ◽  
Wave Signal ◽  
Fast Phase

Probabilistically Shaped 16QAM Signal Transmission in a Photonics-aided Wireless Terahertz-Wave System

2018 ◽  
Author(s):  
Kaihui Wang ◽  
Xinying Li ◽  
Miao Kong ◽  
Pengqi Gou ◽  
Wen Zhou ◽  
...  
Keyword(s):  
Signal Transmission ◽  
Terahertz Wave ◽  
Wave System

scholarly journals Influence of the radio signals frequency band on their spatial selection in communication channels

2021 ◽  
Vol 279 ◽  
pp. 02002
Author(s):  
Alexander Okorochkov ◽  
Nadezda Dmitrienko
Keyword(s):  
Frequency Band ◽  
Signal To Noise Ratio ◽  
Radio Channel ◽  
Signal Transmission ◽  
Total Field ◽  
Sharp Drop ◽  
Single Carrier ◽  
Channel Bandwidth ◽  
Radio Signals ◽  
Reception Area

This article deals with the dependence of the signal-to-noise ratio (S/N) on the frequency band of a radio channel when transmitting three different radio signals over it based on a mathematical model. Signals are transmitted on a single carrier frequency, in one direction and occupy the entire channel frequency band, which varied from 0 to 30 GHz. A threeelement sparse antenna array (SAA) is used for signal transmission. Each signal is emitted by all three SAA elements with certain phase shifts. In the reception area, such a structure of the total field is formed, at which the maxima of all transmitted signals are spatially spaced. This allows each signal to be received on a separate antenna. Studies have shown that the S/N ratio for different signals depends differently on the channel bandwidth. For a signal emitted by all SAA antennas in phase, the S/N ratio is practically independent of the bandwidth and is about 70 dB. For the two remaining phased signals the S/N ratio varies equally over the entire range of the channel frequency band values and is characterized by a sharp drop from 62 to 8 dB.

scholarly journals A Filterless Frequency 32-Tupling Photonic Scheme To Generate Sub-Terahertz Wave Signal Enabled By Optical Polarization Modulators

2021 ◽  
Author(s):  
Xinqiao Chen ◽  
Xiaorui Liu ◽  
Zhihan Li
Keyword(s):  
Theoretical Analysis ◽  
Radio Frequency ◽  
Suppression Ratio ◽  
Phase Shifter ◽  
Optical Signal ◽  
Terahertz Wave ◽  
Optical Polarization ◽  
Optical Carrier ◽  
Wave Signal ◽  
Thz Wave

Abstract A novel scheme based on polarization modulators to generate Sub-Terahertz wave (Sub-THz) signal with frequency 32-tupling is proposed. The system consists of two subsystems in cascade, and each subsystem consists of 4 paralleled polarization modulators. In this scheme, by properly controlling two subsystems, an optical signal with optical carrier and ±16th-order optical sidebands is achieved. Next, by adjusting the optical attenuator and optical phase shifter, the optical carrier can be canceled. Finally, the Sub-THz wave with frequency 32-tupling can be obtained after beaten in the photodetector. The results show the ±16th-order optical sideband suppression ratio (OSSR) is derived as 55.7 dB and the radio frequency sideband suppression ratio (RFSSR) of the 32-tupling Sub-THz wave is derived as 43.66 dB, which are consistent with the theoretical analysis very well. Meanwhile, the effects of phase offset, modulation index, and attenuator deviation on suppression ratio are analyzed.

Integrated Microwave Photonics: The Path to High Quality Millimeter and Terahertz Wave Signal Generation?

2019 ◽  
Author(s):  
Guillermo Carpintero ◽  
Robinson Cruzoe Guzman ◽  
Alberto Zarzuelo ◽  
Jessica Cesar ◽  
Muhsin Ali ◽  
...  
Keyword(s):  
Microwave Photonics ◽  
Terahertz Wave ◽  
Signal Generation ◽  
High Quality ◽  
Wave Signal

scholarly journals 16-QAM Vector Terahertz-wave Signal Generation by Simple MZM-Based Optical Frequency Comb

2020 ◽  
pp. 1-1
Author(s):  
Kaile Li ◽  
Yuanxian Chen ◽  
Yongtao Huang ◽  
Yitong Li ◽  
Ying Han ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Terahertz Wave ◽  
Optical Frequency Comb ◽  
Signal Generation ◽  
Optical Frequency ◽  
Wave Signal
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