Original scientific paper

https://doi.org/10.51381/adrs.v3i1.41

Improving Image Transmission by Using Polar Codes and Successive Cancellation List Decoding

Álvaro Garcia ; University of Pernambuco
Maria De Lourdes Melo Guedes Alcoforado ; UPE
Francisco Madeiro ; University of Pernambuco
Valdemar Cardoso da Rocha Jr. orcid.org/0000-0002-1416-479X ; Federal University of Pernambuco

Abstract

This paper investigates the transmission of grey scale images encoded with polar codes and de-coded with successive cancellation list (SCL) decoders in the presence of additive white Gaussian noise. Po-lar codes seem a natural choice for this application be-cause of their error-correction efficiency combined with fast decoding. Computer simulations are carried out for evaluating the influence of different code block lengths in the quality of the decoded images. At the encoder a default polar code construction is used in combination with binary phase shift keying modulation. The results are compared with those obtained by using the clas-sic successive cancellation (SC) decoding introduced by Arikan. The quality of the reconstructed images is assessed by using peak signal to noise ratio (PSNR) and the structural similarity (SSIM) index. Curves of PSNR and SSIM versus code block length are presented il-lustrating the improvement in performance of SCL in comparison with SC.

Keywords

Hrčak ID:

249382

URI

https://hrcak.srce.hr/249382

Publication date:

17.11.2020.

Visits: 899 *