MIMO Broadcast Transceiver Signaling Overhead Reduction
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Solution Overview
Problem
Current digital broadcast signal transceiving technologies face challenges in maintaining data transmission efficiency, robustness, and compatibility, especially in indoor and mobile environments, while ensuring backward compatibility with conventional systems.
Innovation Solution
A broadcast signal transmitter and method utilizing a MIMO system with an input processing module, encoder, frame builder, and modulating unit to perform FEC encoding, time-interleaving, and modulating physical transmission frames, including in-band signaling information, to enhance data transmission efficiency and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO processing is applied to enhance data transmission efficiency and robustness, then data transmission efficiency and robustness are improved, but device complexity increases
Solution Approach 1:
The MIMO processing is segmented into distinct functional modules: input processing module for signal preparation, encoder for error correction coding, frame builder for frame structure construction, and modulating unit for modulation. This segmentation allows complex MIMO operations to be divided into manageable stages, improving implementability while maintaining high data transmission efficiency and robustness.
2Reliability
If MIMO processing is applied to enhance robustness in indoor and mobile environments, then reliability is improved, but device complexity increases
Solution Approach 1:
The system divides robustness enhancement into modular components: the encoder implements FEC coding for error protection, the frame builder constructs robust frame structures, and the modulating unit applies appropriate modulation schemes. This modular segmentation enables reliable signal transmission in challenging indoor and mobile environments while keeping each component's complexity manageable.
Solution Approach 2:
The encoder performs forward error correction (FEC) encoding in advance to add redundancy to the transmitted signal. This beforehand cushioning ensures that even when signals experience degradation in indoor or mobile environments, the receiver can recover the original data through error correction, thereby enhancing reliability without requiring complex real-time processing.
3Adaptability or versatility
If in-band signaling information is transmitted to service component PLP, first information PLP, and second information PLP, then adaptability is improved, but loss of information increases due to signaling overhead
Solution Approach 1:
The system merges in-band signaling information transmission into the existing PLP structure by embedding signaling data within the service component PLP, first information PLP, and second information PLP. This combining approach allows flexible adaptation to different service requirements while utilizing the same transmission resources, thereby reducing overall signaling overhead and minimizing information loss.
Solution Approach 2:
The PLP structure is designed with multi-functionality to serve multiple purposes: it carries service data, transports in-band signaling information, and provides flexible adaptation to different broadcast services. This universal design enables the system to achieve high adaptability without requiring separate dedicated signaling channels, thus reducing signaling overhead and information loss.
Data Source
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AI summary
A broadcast signal transmitter, a broadcast signal receiver, and a method for transmitting/receiving a broadcast signal in a broadcast signal transmitter/receiver are disclosed. The broadcast signal transmitting method includes signaling in-band signaling information to at least one of a service component PLP including at least one service component configuring a broadcast service, a first information PLP including first service information being applied to one broadcast service, and a second information PLP including second service information being commonly applied to multiple broadcast services; performing FEC encoding on data included in each PLP; time-interleaving the FEC encoded data; generating a logical transmission frame including the time-interleaved data and L1-post signaling information, and generating one or more physical transmission frames including data of the logical transmission frame; and modulating the one or more physical transmission frames, and transmitting a broadcast signal including the one or more modulated physical transmission frames.