Iterative decoding between feed-forward carrier recovery and FEC decoding to compensate for laser phase noise

2017 ◽  
Author(s):  
Shuai Yuan ◽  
Koji Igarashi
Keyword(s):  
Phase Noise ◽  
Iterative Decoding ◽  
Carrier Recovery ◽  
Feed Forward

scholarly journals Trellis-based feed-forward carrier recovery for coherent optical systems

2016 ◽  
Vol 24 (20) ◽  
pp. 23531 ◽  
Author(s):  
Mahdi Zamani ◽  
Hossein Najafi ◽  
Demin Yao ◽  
Jeebak Mitra ◽  
Xuefeng Tang ◽  
...  
Keyword(s):  
Optical Systems ◽  
Carrier Recovery ◽  
Feed Forward

Design and Analysis of an N-Path Filter with High Out-of-Band Rejection Using Feed-Forward Technique

2019 ◽  
Vol 28 (03) ◽  
pp. 1950053 ◽  
Author(s):  
Amin Mohammadpour ◽  
Abdolreza Nabavi
Keyword(s):  
Phase Noise ◽  
Insertion Loss ◽  
The Other ◽  
Trade Off ◽  
Feed Forward ◽  
Main Path

This paper presents an N-path filter with high out-of-band rejection using feed-forward technique. The structure utilizes two four-path filters, one as the main-path and the other as auxiliary-path, and two TIAs to increase the order of the filter from two to four. As a result of this, and due to using two series resistors in the main path, the out-of-band rejection is significantly improved. Analysis and simulations show that the series resistors can be chosen such that the NF degradation is below 2[Formula: see text]dB while the out-of-band rejection is improved by about 20[Formula: see text]dB. Therefore, the trade-off between the insertion-loss and out-of-band rejection is relaxed compared to conventional N-path filter. Also, it is shown that decreasing the size of baseband capacitors improves the NF of the filter. The effect of clock phase-noise on NF of the filter in the presence of strong out-of-band blocker is modeled and simulated.

Feed-Forward Optical Carrier Recovery for QAM Coherent Optical Receivers

2012 ◽  
Vol 33 (3) ◽  
Author(s):  
Fangzheng Zhang ◽  
Jian Wu ◽  
Yan Li ◽  
Kun Xu ◽  
Jintong Lin
Keyword(s):  
Optical Receivers ◽  
Carrier Recovery ◽  
Optical Carrier ◽  
Feed Forward

Pilot-Aided Carrier Recovery in the Presence of Phase Noise

2011 ◽  
Vol 59 (7) ◽  
pp. 1966-1974 ◽  
Author(s):  
Arnaldo Spalvieri ◽  
Luca Barletta
Keyword(s):  
Phase Noise ◽  
Carrier Recovery

scholarly journals New Lower Bound below the Information Rate of Phase Noise Channel Based on Kalman Carrier Recovery

2012 ◽  
Vol 4 (4) ◽  
pp. 597-607 ◽  
Author(s):  
Luca Barletta ◽  
◽  
Maurizio Magarini ◽  
Arnaldo Spalvieri ◽  
◽  
...  
Keyword(s):  
Lower Bound ◽  
Phase Noise ◽  
Information Rate ◽  
Carrier Recovery
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