Performance and complexity comparison of carrier phase estimation algorithms for DP-64-QAM optical signals

2014 ◽  
Author(s):  
S. M. Bilal ◽  
K. P. Zhong ◽  
J. Cheng ◽  
Alan Pak Tao Lau ◽  
G. Bosco ◽  
...  
Keyword(s):  
Carrier Phase ◽  
Phase Estimation ◽  
Optical Signals ◽  
Estimation Algorithms

An Absolute Phase Estimation Method for Interferometry Imagery

2019 ◽  
Vol 1 (2) ◽  
pp. 14-19
Author(s):  
Sui Ping Lee ◽  
Yee Kit Chan ◽  
Tien Sze Lim
Keyword(s):  
Noise Suppression ◽  
Estimation Method ◽  
Phase Image ◽  
Phase Estimation ◽  
Phase Reconstruction ◽  
Estimation Algorithms ◽  
Absolute Phase ◽  
Filtering Rate ◽  
Interferometric Phase ◽  
Image Performance

Accurate interpretation of interferometric image requires an extremely challenging task based on actual phase reconstruction for incomplete noise observation. In spite of the establishment of comprehensive solutions, until now, a guaranteed means of solution method is yet to exist. The initially observed interferometric image is formed by 2π-periodic phase image that wrapped within (-π, π]. Such inverse problem is further corrupted by noise distortion and leads to the degradation of interferometric image. In order to overcome this, an effective algorithm that enables noise suppression and absolute phase reconstruction of interferometric phase image is proposed. The proposed method incorporates an improved order statistical filter that is able to adjust or vary on its filtering rate by adapting to phase noise level of relevant interferometric image. Performance of proposed method is evaluated and compared with other existing phase estimation algorithms. The comparison is based on a series of computer simulated and real interferometric data images. The experiment results illustrate the effectiveness and competency of the proposed method.

Modulation-Format-Independent Carrier Phase Estimation for Square M-QAM Systems

2013 ◽  
Vol 25 (11) ◽  
pp. 1073-1076 ◽  
Author(s):  
Yuliang Gao ◽  
Alan Pak Tao Lau ◽  
Chao Lu
Keyword(s):  
Carrier Phase ◽  
Phase Estimation ◽  
Modulation Format

scholarly journals Low-complexity feed-forward carrier phase estimation for M-ary QAM based on phase search acceleration by quadratic approximation

2015 ◽  
Vol 23 (15) ◽  
pp. 19142 ◽  
Author(s):  
Meng Xiang ◽  
Songnian Fu ◽  
Lei Deng ◽  
Ming Tang ◽  
Perry Shum ◽  
...  
Keyword(s):  
Carrier Phase ◽  
Low Complexity ◽  
Quadratic Approximation ◽  
Phase Estimation ◽  
Feed Forward

Carrier Phase Recovery Estimation Algorithms in Optical Coherent QPSK Communication System

2021 ◽  
Author(s):  
Wilver Lalu ◽  
Bryril Alvarez ◽  
Christian Dela Cruz ◽  
Lea Lauan ◽  
Jerico Trinos ◽  
...  
Keyword(s):  
Communication System ◽  
Carrier Phase ◽  
Phase Recovery ◽  
Estimation Algorithms
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