Distributed compression of correlated sources using systematic Polar Codes

Yaacoub, Charles; Sarkis, Malak

doi:10.1109/istc.2016.7593084

Cited by 4 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, polar codes were proven to be optimal for lossy source compression and the binary WZ problem [10]. Several studies investigated the application of polar codes for the distributed source coding [11], [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Distributed Video Coding Based on Polar Codes

2023

View full text Add to dashboard Cite

In this letter we present an improved distributed video coding (DVC) scheme based on polar coding techniques. Firstly, we adapt log-likelihood ratios (LLRs) for DVC with integer implementation of a discrete cosine transform (DCT). We propose a computationally efficient and numerically stable modification of these LLRs based on the simplified methods of polar codes decoding. We show that on average this approach provides 0.3 dB PSNR gain for DVC with LDPC accumulated (LDPCA) codes. Secondly, we introduce the nested shortened polar codes construction algorithm. We demonstrate that replacement of LDPCA by polar codes improves PSNR by 0.1 dB on average, whereas, for videos with relatively high motion level, the gain reaches up to 0.23, 0.39 and 0.55 dB for Group of Pictures (GOP) lengths 2, 4 and 8 frames, respectively. Finally, experimental results demonstrate that DVC with polar codes and Tal-Vardy list decoder operates up to two times faster than DVC with LDPCA code and belief propagation (BP) decoder.

show abstract

Section: Introductionmentioning

confidence: 99%

Distributed Video Coding Based on Polar Codes

2023

View full text Add to dashboard Cite

show abstract

“…Pradhan et al proposed the first practical Wyner-Ziv coding scheme: DIstributed Source Coding Using Syndromes (DISCUS), which uses the syndromes of capacity-achievable channel codes to design WZ-bound achievable source codes [15], [16]. Various channel codes, such as Low-Density Parity-Check Code (LDPC) [17], Turbo code [18], Polar codes [19], etc., have been turned into DISCUS codes. DISCUS is a special case of coset coding [20]- [22], by which the typical sequences [7] are orderly assigned to the bins via modulo-subgroup [23] operations [24], [25].…”

Section: Introductionmentioning

confidence: 99%