scholarly journals A two-stage coded modulation scheme based on the 8-QAM signal for optical transmission systems

2018 ◽  
Vol 131 ◽  
pp. 964-969
Author(s):  
Zheng Demeng ◽  
Yuan Jianguo ◽  
Wang Zhe ◽  
Zeng Jing ◽  
Sun Lele
Keyword(s):  
Optical Transmission ◽  
Coded Modulation ◽  
Modulation Scheme ◽  
Two Stage ◽  
Transmission Systems ◽  
Optical Transmission Systems

DC 30 GHz bandwidth and 36 dB gain limiting amplifier for 40 Gbit/s optical transmission systems

1997 ◽  
Vol 33 (25) ◽  
pp. 2139 ◽  
Author(s):  
Z. Lao ◽  
R. Bosch ◽  
V. Hurm ◽  
A. Thiede ◽  
M. Schlechtweg ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Transmission Systems ◽  
Limiting Amplifier ◽  
Optical Transmission Systems

scholarly journals Performances of BICM-ID system using CRSC code in optical transmissions

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Hocine Fekih ◽  
Boubakar Seddik Bouazza ◽  
Keltoum Nouri
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Iterative Decoding ◽  
Optical Transmission ◽  
Coded Modulation ◽  
Modulation Scheme ◽  
Coding Gain ◽  
Decoding Algorithms ◽  
Qam Modulation ◽  
Short Code

AbstractRecently, using iterative decoding algorithms to achieve an interesting bit error rate for spectrally efficient modulation become a necessity for optical transmission, in this paper, we propose a coded modulation scheme based on bit interleaving circular recursive systematic convolutional (CRSC) code and 16-QAM modulation. The proposal system considered as a serial concatenation of a channel encoder, a bit interleaver and M-ary modulator can be flexible easy to implement using a short code length. For a spectral efficiency $\eta =3\text{bit}/s/Hz$, the coding gain at a bit error rate of 10−6 is about 8 dB.

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