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 ...

Abstract In actual communication scenarios, wireless transmission channels have the nature of heterogeneity. order to ensure that data can be transmitted with high reliability and low delay, this paper designs a quasi-optimal polar code adapt various channel environments, which called Q-polar code. Based on polarization theory codes state information (CSI), index set is designed constructed per...

Polar codes are constructed for arbitrary channels by imposing an arbitrary quasigroup structure on the input alphabet. Just as with “usual” polar codes, the block error probability under successive cancellation decoding is o(2−N 1/2− ), where N is the block length. The encoding and decoding in this coding scheme can be implemented with a complexity of O(N logN). It is shown that the same techn...