Method for optimizing protograph-based LDPC code over underwater acoustic channel
US11469777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jun 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1131
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a method for optimizing a protograph-based LDPC code over an underwater acoustic (UAW) channel. The traditional protograph-based LDPC code over an UAW channel does not consider performance in an error floor region. The method first determines parameters such as a protograph-based LDPC code length, a basic protograph, a target decoding threshold, a threshold adjustment factor, and an ACE check parameter. The protograph is optimized, and the method constructs a parity check matrix by using a UAW channel-based PEG/ACE hybrid algorithm, performs ACE check on the parity check matrix, and calculates a decoding threshold for the matrix passing the check. If the decoding threshold is within a range of an iterative decoding threshold, the parity check matrix is a final optimized matrix. Otherwise, the method continues to optimize the protograph until a parity check matrix passing the check is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.