Efficient decoding schemes of LDPC codes for the layered-division multiplexing systems in ATSC 3.0
SCIE
SCOPUS
- Title
- Efficient decoding schemes of LDPC codes for the layered-division multiplexing systems in ATSC 3.0
- Authors
- Hwang, Y.; Cho, Sung-Hye; Myung, S.; Yang, K.
- Date Issued
- 2017-03
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Abstract
- A low-complexity decoding scheme of low-density parity-check codes for the layered-division multiplexing (LDM) systems in ATSC 3.0 is proposed. Based on the unique characteristic of the LDM and the special structure of a parity-check matrix (PCM) for the core layer, the proposed scheme applies the sum-product algorithm (SPA) to only a part of the PCM. For this reason, it is referred to as the partial SPA, compared with the conventional scheme, denoted by the full SPA. Clearly, it has a significantly lower complexity than the full SPA. Furthermore, we propose hybrid decoders employing both the full SPA and the partial SPA to achieve a better performance, while maintaining their complexity low. Numerical results show that the proposed schemes have a good performance enough to perform successive interference cancellation for the enhanced layer of the LDM systems in ATSC 3.0 as well as they have a low-complexity merit depending on system parameters. Since they only schedule the decoding procedure without modifying the decoder structure, they also have a benefit in the implementation of decoders. ? 2016 IEEE.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50534
- DOI
- 10.1109/TBC.2016.2606896
- ISSN
- 0018-9316
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON BROADCASTING, vol. 63, no. 1, page. 1 - 10, 2017-03
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