Transmission method using ldpc code of row orthogonal structure and device therefor

By generating quasi-cyclic LDPC codes suitable for wireless LAN systems, the limited performance improvement of LTE turbo codes with increasing signal-to-noise ratio is solved, achieving a low bit error rate and low complexity coding method that supports high-speed communication in 5G wireless LAN systems.

CN115996061BActive Publication Date: 2026-05-29LG ELECTRONICS INC
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Patent Information

Application Number
CN202310071258.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2017-06-13
Filing Date
2018-02-05
Publication Date
2026-05-29
Estimated Expiration
2038-02-05

AI Technical Summary

Technical Problem

Existing LTE turbo codes offer limited performance improvement as the signal-to-noise ratio increases, resulting in high bit error rates and high complexity, which cannot meet the requirements of ultra-reliable low-latency communication in 5G mobile communications.

Method used

Quasi-cyclic low-density parity-check (LDPC) codes are adopted. By generating a polygonal LDPC code matrix including a high-ratio code matrix and a single parity-check code matrix, and using a concatenated coding method of non-row orthogonal structure and pure row orthogonal structure, LDPC codes suitable for wireless LAN systems are generated.

Benefits of technology

Generate applicable LDPC codes under different communication environments, reduce bit error rate and coding complexity, and support high-speed communication in 5G wireless LAN systems.

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Abstract

The present invention relates to a transmission method using LDPC codes with row-orthogonal structure and a device therefor. A method for encoding a quasi-cyclic low density parity check (LDPC) code according to an embodiment of the present invention can include the steps of generating a multi-edge LDPC code matrix including a high-rate code matrix and a single parity check code matrix; and encoding a signal using the multi-edge LDPC code matrix, wherein the single parity check code matrix is formed by concatenating a first matrix having a non-row-orthogonal structure matrix and a second matrix having a pure row-orthogonal structure.
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