Broadcast Signal Error Correction for Multi-Channel RF Transmission
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Solution Overview
Problem
Current digital broadcasting technologies face challenges in improving data transmission efficiency and error correction capabilities, particularly with increasing demands for high-definition video and audio signals and multiple broadcasting channels.
Innovation Solution
The method involves a signal transmission and reception system using a time-frequency slicing scheme with pilot signals, error correction coding, and hybrid symbol mapping to efficiently transmit and receive signals across multiple RF channels, enhancing data transmission efficiency and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error correction coding is applied to improve reliability, then data transmission reliability is improved, but data transmission efficiency deteriorates due to increased overhead
Solution Approach 1:
The service data stream is divided into multiple blocks, and error correction coding is applied selectively to different blocks based on their importance. Critical service data receives stronger error correction while less critical data uses lighter coding, thereby improving overall reliability without uniformly increasing overhead across all data
Solution Approach 2:
Different error correction coding schemes are applied to different portions of the data stream based on local requirements. The system identifies critical data segments and applies enhanced error correction specifically to those segments, while using more efficient coding for non-critical segments, achieving localized optimization of reliability versus efficiency trade-off
2Quantity of substance
If multiple broadcasting channels are transmitted to meet increasing service demands, then service capacity is improved, but system complexity worsens
Solution Approach 1:
Multiple service data streams are merged into a single multiplexed stream that is then transmitted through one broadcasting channel. The system combines multiple services, applies unified error correction coding, and transmits them together, reducing the number of separate transmission paths and associated complexity while maintaining the capacity to deliver multiple services
Solution Approach 2:
The broadcasting system is designed to handle multiple services through a universal error correction coding framework that can accommodate different service types and priorities. The same coding infrastructure serves multiple functions - protecting critical services, optional services, and basic services - thereby increasing service capacity without proportionally increasing system complexity
Data Source
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AI summary
In one aspect of the present invention, the method receiving a signal is disclosed. The method includes receiving a signal transmitted in a radio frequency (RF) band including at least one RF channel, demodulating the received signal, parsing a preamble of a signal frame including layer-1 information, from the demodulated signal, deinterleaving bits of the layer-1 information, decoding the deinterleaved bits using an error correction decoding scheme including a shortening scheme and a puncturing scheme and obtaining physical layer pipes (PLPs) from the signal frame using the error-correction-decoded layer-1 information.