Polar Codes with Local-Global Decoding
Abstract
In this paper, we investigate a coupled polar code architecture that supports both local and global decoding. This local-global construction is motivated by practical applications in data storage and transmission where reduced-latency recovery of sub-blocks of the coded information is required. Local decoding allows random access to sub-blocks of the full code block. When local decoding performance is insufficient, global decoding provides improved data reliability. The coupling scheme incorporates a systematic outer polar code and a partitioned mapping of the outer codeword to semipolarized bit-channels of the inner polar codes. Error rate simulation results are presented for 2 and 4 sub-blocks. Design issues affecting the trade-off between local and global decoding performance are also discussed.
Keywords
Cite
@article{arxiv.2301.02294,
title = {Polar Codes with Local-Global Decoding},
author = {Ziyuan Zhu and Wei Wu and Paul H. Siegel},
journal= {arXiv preprint arXiv:2301.02294},
year = {2023}
}
Comments
5 pages, 9 figures, invited paper in Session on Coding for 6G, 2022 Asilomar Conference on Signals, Systems, and Computers