Coded modulation scheme employing turbo codes

1995 ◽  
Vol 31 (18) ◽  
pp. 1546-1547 ◽  
Author(s):  
P. Robertson ◽  
T. Wörz
Keyword(s):  
Turbo Codes ◽  
Coded Modulation ◽  
Modulation Scheme

A Novel Turbo Coded Modulation Scheme for Deep Space Optical Communications

2010 ◽  
Vol E93.B (5) ◽  
pp. 1260-1263 ◽  
Author(s):  
Sangmok OH ◽  
Inho HWANG ◽  
Adrish BANERJEE ◽  
Jeong Woo LEE
Keyword(s):  
Optical Communications ◽  
Coded Modulation ◽  
Modulation Scheme ◽  
Deep Space ◽  
Turbo Coded Modulation

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.

An FPGA Implementation of TCM Cascade Space Time Block Code

2012 ◽  
Vol 195-196 ◽  
pp. 901-903
Author(s):  
Jun Wu ◽  
Xiao Bo Wu
Keyword(s):  
Block Code ◽  
Space Time ◽  
Coded Modulation ◽  
Diversity Gain ◽  
Modulation Scheme ◽  
Time Block ◽  
Coding Gain ◽  
Space Time Block Code ◽  
Concatenated Code ◽  
Trellis Coded

Trellis coded (TCM) modulation can obtain the coding gain without increase the transmission power and the bandwidth but it can not obtain diversity gain, and space-time block code (STBC) can provide diversity gain in a simple encoding and decoding way, though its coding gain is not very satisfied. This article will achieve a STBC-class networking trellis coded modulation scheme based on FPGA to further study the performance of the concatenated code.

A Coded Modulation Scheme for Deep-Space Optical Communications

2008 ◽  
Vol 20 (5) ◽  
pp. 372-374 ◽  
Author(s):  
Ying Tan ◽  
Jian-zhong Guo ◽  
Yong Ai ◽  
Wei Liu ◽  
Yu-Jie Fei
Keyword(s):  
Optical Communications ◽  
Coded Modulation ◽  
Modulation Scheme ◽  
Deep Space
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