L1 Signaling Segmentation and Dual Encoding for Digital Broadcast Reception

Solution Overview

Problem

Current broadcasting communication systems face challenges in achieving optimal transmission and reception performance for digital broadcasting services, particularly in supporting high-quality digital television and portable media player applications, due to limitations in existing standards like DVB-T2.

Innovation Solution

The implementation of a transmitter and receiver system that segments and encodes L1 signaling using Bose-Chaudhuri-Hocquenghem (BCH) and low-density parity-check (LDPC) encoding, with a predetermined number of bits calculated based on transmission code rate and parity bits, to enhance transmission and reception performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If L1 signaling is transmitted as a whole without segmentation, then the transmission structure is simple, but the transmission and reception performance is insufficient for high-quality digital broadcasting

Engineering Contradiction:

Improvetransmission and reception performanceVSAvoidsegmentation and encoding complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The L1 signaling is divided into multiple segmented L1 signalings, where each segment is independently encoded with BCH and LDPC codes. This segmentation allows the receiver to decode and recover the original L1 signaling even if some segments are corrupted during transmission, thereby improving transmission and reception performance without excessively increasing system complexity through manageable modular processing

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different encoding parameters (BCH and LDPC code rates, block lengths) to different segments of L1 signaling based on their importance and error protection requirements. By optimizing encoding parameters for each segment, the system achieves better overall transmission performance while controlling complexity through parameterized encoding schemes

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If BCH and LDPC encoding is applied to segmented L1 signaling with predetermined bit limits, then bit error rate performance improves, but the encoding process becomes more complex

Engineering Contradiction:

Improvebit error rate performanceVSAvoiddual encoding complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The L1 signaling is divided into multiple segmented L1 signalings, where each segment is independently encoded with BCH and LDPC codes. This segmentation allows the receiver to decode and recover the original L1 signaling even if some segments are corrupted during transmission, thereby improving transmission and reception performance without excessively increasing system complexity through manageable modular processing

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies dual BCH and LDPC encoding to segmented L1 signaling, providing more error protection than single encoding would offer. By applying encoding twice (BCH then LDPC, or vice versa), the system achieves superior bit error rate performance through layered error correction, where each encoding layer addresses different types of errors

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11539460B2Transmitter, receiver, and signal processing method thereof

Publication Date: 2022.12.27 SAMSUNG ELECTRONICS CO LTD

AI summary

A transmitter and receiver of a broadcasting signal and a method of processing the broadcasting signal are provided. The transmitter includes: a segmenter configured to segment an L1 signaling of a frame into a plurality of segmented L1 signalings such that each of the segmented L1 signalings has bits a number of which is equal to or smaller than a predetermined number; and an encoder configured to perform a Bose, Chaudhuri, Hocquenghem (BCH) and a low density parity check (LDPC) encoding, or the LDPC encoding without the BCH encoding, with respect to the segmented L1 signalings.