Results 271 to 280 of about 307,428 (330)

Blind Carrier Frequency Offset Estimation in Coherent Optical Communication Systems With Probabilistically Shaped M-QAM

Journal of Lightwave Technology, 2019
We find that the conventional 4th power and circular harmonic expansion (CHE) algorithms, which are originally devised for blind frequency offset estimation (FOE) in the uniform M-quadrature amplitude modulation (MQAM) systems, cannot work properly for ...
Qifeng Yan, Liu Liu, Xuezhi Hong
semanticscholar   +1 more source

Coherent Optical Communications

20th European Microwave Conference, 1990, 1990
A variety of coherent optical communications are reviewed in comparison with microwave communications.
openaire   +1 more source

Coherent Optical Fibre Communication Systems

IETE Technical Review, 1986
The unique performances attached to the heterodyne (or coherent) optical detection-process can be fully exploited with single-mode fibre transmission Very recent developments seem to open up a wide range of possibilities for further system development.
A Alphonse, G S Sanyal
openaire   +1 more source

Coherent fiber-optic communications (review)

Soviet Journal of Quantum Electronics, 1985
This review is devoted to heterodyne and homodyne methods for the transmission and reception of data along single-mode fiber waveguides. The advantages of the coherent data transmission methods over the currently used methods of modulation of light intensity and direct detection are demonstrated.
Sergey K Morshnev, A V Fantsesson
openaire   +1 more source

Coherent Optical Communication

2022
Xizheng Ke, Jiali Wu
  +4 more sources

Coherent Optical Fiber Communications

Journal of Modern Optics, 1989
(1989). Coherent Optical Fiber Communications. Journal of Modern Optics: Vol. 36, No. 4, pp. 552-552.
openaire   +1 more source

Polarization-modulated coherent optical communication systems

SPIE Proceedings, 1991
Polarization modulated coherent optical communication systems are quite interesting for their simplicity, low phase noise induced penalty, and insensitivity to state of polarization fluctuations if a suitable tracking is adopted. In this paper different kinds of binary and multilevel polarization modulated systems are presented based on Stokes ...
S. Betti, F. Curti, G. De Marchis, E. Iannone   +3 more
openaire   +1 more source

DSP-enabled coherent optical communications

SPIE Proceedings, 2007
Digital signal processing techniques used in conjunction with phase-diversity coherent optical receivers are presented in this paper. These techniques enable coherent detection and mitigation of optical impairments introduced in transmission. The main advantage of this approach is that the optical impairments can be handled in the digital domain ...
Goldfarb, Gilad, Li, Guifang
openaire   +2 more sources

Joint equalization of linear impairments using two-stage cascade Kalman filter structure in coherent optical communication systems

, 2019
In this paper, instead of adopting different algorithms to deal with the different impairments separately based on different signal processing structures, we proposed a joint linear impairment equalization scheme using a two-stage cascade Kalman ...
N. Zhang, Wei Yi, Zibo Zheng, Nan Cui, Ruipu Guo, Liyuan Qiu, Xiaoguang Zhang, Lixia Xi, Wenbo Zhang, Hengying Xu   +9 more
semanticscholar   +1 more source

A Novel 68Gb/s QPSK Coherent Optical Communication Scheme Demonstration for the Integration of Satellite Communication and Ranging

Asia Communications and Photonics conference and Exhibition, 2018
A novel single-polarization 68Gb/s coherent optical communication scheme employing both femtosecond fiber laser and continuous-wave laser is proposed and evaluated, which can be applied for future integration of satellite communication and ranging.
Jie Yin, T. Dong, Yuwei Su, Yue Zhou, Kun Xu   +4 more
semanticscholar   +1 more source