Broadcast Signal Error Correction Across Multiple RF Channels
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Solution Overview
Problem
Current digital broadcasting technologies face limitations 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 employs a signal transmission and reception system using a time-frequency slicing scheme with orthogonal frequency division multiplexing (OFDM) and hybrid symbol mapping, combined with LDPC and BCH error correction codes, to efficiently transmit and receive signals across multiple RF channels, enhancing data transmission efficiency and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional digital broadcasting technology is used, then basic video and audio signal transmission is achieved, but data transmission efficiency is insufficient
Solution Approach 1:
The patent applies time-frequency slicing to divide the broadcast signal into multiple independent slices, each carrying different services or data streams. This segmentation allows parallel transmission of multiple services simultaneously, improving overall data transmission efficiency and capacity without interfering with each other
Solution Approach 2:
The patent utilizes both time and frequency dimensions for signal transmission by implementing time-frequency slicing. This two-dimensional approach allows the system to transmit multiple services across different time slots and frequency bands, significantly increasing data capacity and transmission efficiency compared to conventional single-dimension methods
2Adaptability or versatility
If more broadcasting channels and services are added, then user service requirements are met, but error correction capability becomes insufficient
Solution Approach 1:
The patent combines multiple error correction coding schemes (LDPC and BCH codes) into a hybrid error correction system. This merging of different coding techniques provides enhanced error correction capability that can handle the increased complexity and error susceptibility introduced by multiple broadcasting channels and services
3Manufacturing precision
If high definition video and audio signals are transmitted, then quality is improved, but data transmission efficiency decreases
Solution Approach 1:
The patent employs hybrid symbol mapping that dynamically adjusts modulation parameters to optimize the balance between signal quality and transmission efficiency. By changing modulation parameters adaptively across different time-frequency slices, the system can maintain high definition quality while improving overall data transmission efficiency
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.