Broadcast Signal Transmitter MIMO Framing for Robust Mobile Reception
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Solution Overview
Problem
Digital broadcast systems face challenges in enhancing data transmission efficiency, robustness, and compatibility with conventional methods, particularly in maintaining signal quality for high-capacity data transmission and mobile reception.
Innovation Solution
The implementation of a MIMO (Multi-Input Multi-Output) system in a broadcast signal transmitter and receiver, which processes signals through multiple antennas to enhance data transmission efficiency and robustness while maintaining compatibility with conventional systems, allowing for error-free reception even in indoor or mobile environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO encoding is applied to enhance data transmission efficiency, then data transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The MIMO encoding process is divided into separate functional blocks: a MIMO encoder that performs the encoding operation and a separate MIMO decoder that performs the decoding operation. This segmentation allows each component to be optimized independently, reducing the complexity burden on any single device while maintaining overall system efficiency.
Solution Approach 2:
The patent introduces standardized interface specifications as intermediaries between the MIMO encoder and decoder. These interfaces define clear data exchange protocols, allowing different implementations to work together without increasing complexity. The intermediary layer abstracts the complex MIMO operations into manageable, standardized interactions.
2Reliability
If multiple transmit and receive antennas are deployed to improve robustness, then transmission robustness is improved, but device complexity increases
Solution Approach 1:
The MIMO encoder and decoder are designed with universal interfaces that can accommodate different numbers of transmit and receive antennas. The same basic encoding/decoding architecture works whether using 2x2, 4x4, or other antenna configurations, reducing the need for multiple specialized devices and thereby reducing overall system complexity while maintaining robustness across different scenarios.
3Quantity of substance
If MIMO processing is implemented to achieve high-capacity data transmission, then data transmission capacity is improved, but ease of operation deteriorates
Solution Approach 1:
The MIMO decoder is designed to automatically perform the complex decoding operations required for high-capacity data transmission without requiring manual intervention or configuration. The standardized interfaces enable the system to self-configure and self-optimize based on the transmitted data characteristics, maintaining ease of operation while achieving high transmission capacity.
Data Source
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AI summary
Disclosed is a broadcast signal transmitter. A broadcasting signal transmitter, according to one embodiment of the present invention, comprises; a BICM encoder, which FEC encodes and bit interleaves PLP data and signaling information; a frame builder, which builds a frame by cell mapping the PLP data and the signaling information; a MIMO/MISO encoder, which MIMO-or MISO-encoding the PLP data and the signaling information; and an OFDM generator, which OFDM modulates the PLP data and the signaling information, wherein the OFDM generator includes an additional preamble symbol insertion module, which inserts an additional preamble symbol to the frame.