Distributed Video Coding Based on Polar Codes

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