Abstract
Abstract Recently, 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 η = 3 bit / s / H z $\eta =3\text{bit}/s/Hz$ , the coding gain at a bit error rate of 10−6 is about 8 dB.
Highlights
Telecommunication operators search to increase the number of users of their optical systems significantly
Recently, 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
Three years after the study by Djordjevic et al [9], Arabaci et al [10] have proposed a new scheme for coded modulation based on nonbinary quasicyclic low-density parity-check codes (NB-LDPC-CM) for optical transmission, and they show that using NB-LDPC-CM offers several advantages in addition, the proposed scheme provides higher coding gains than BI-LDPC-CM [10]
Summary
Telecommunication operators search to increase the number of users of their optical systems significantly. Zehavi [3] shows that the use of a bit interleaver can increase the order of diversity to the minimum number of distinct bits instead of channel symbols This allows a coded modulation system of medium complexity to achieve a greater diversity order and reach a large gain of coding. Three years after the study by Djordjevic et al [9], Arabaci et al [10] have proposed a new scheme for coded modulation based on nonbinary quasicyclic low-density parity-check codes (NB-LDPC-CM) for optical transmission, and they show that using NB-LDPC-CM offers several advantages (decrease latency and the system complexity) in addition, the proposed scheme provides higher coding gains than BI-LDPC-CM [10].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
