L1 Signaling Segmentation and Coding for Robust Broadcast Reception
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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 and signal processing methods.
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 improve transmission and reception performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If L1 signaling is transmitted as a single block without segmentation, then the transmission structure is simple, but the transmission and reception performance is insufficient for high-quality digital broadcasting
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 individual segments independently, improving reliability by enabling error correction at the segment level while maintaining manageable processing complexity through standardized encoding procedures for each segment.
2Loss of information
If the number of bits in L1 signaling is large, then more information can be transmitted, but the encoding and decoding complexity increases and error rates worsen
Solution Approach 1:
By segmenting the L1 signaling into smaller blocks, each segment can be independently encoded with appropriate BCH and LDPC codes. This reduces the bit error rate within each segment while maintaining the total information transmission capacity across all segments. The receiver can reconstruct the complete L1 signaling by combining successfully decoded segments.
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 sensitivity. Critical signaling information can be placed in segments with more robust encoding, while less critical information uses standard encoding, optimizing the overall reliability without excessive complexity.
Data Source
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.