Broadcast Signal Receiver with MIMO Decoding for Robust OFDM Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Digital broadcast systems face challenges in enhancing data transmission efficiency, robustness, and compatibility with conventional systems, particularly in mobile and indoor reception environments.
Innovation Solution
The implementation of a MIMO (Multi-Input Multi-Output) system for transceiving broadcast signals, which includes a broadcast signal transmitter and receiver that perform MISO and MIMO processing using multiple antennas, and employs scalable video coding (SVC) to ensure compatibility with conventional systems and improve data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO processing is implemented to enhance data transmission efficiency, then data transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The MIMO processing is segmented into distinct functional blocks: MIMO encoder at the transmitter side and MIMO decoder at the receiver side. This segmentation allows each block to handle specific tasks independently, improving data transmission efficiency while managing device complexity through modular architecture.
Solution Approach 2:
The MIMO processing blocks are designed to handle multiple functions including encoding, decoding, and signal processing across multiple antennas. This multi-functionality enables the system to improve data transmission efficiency without proportionally increasing device complexity, as the same blocks serve multiple purposes in the signal processing chain.
2Reliability
If MIMO system is introduced to improve robustness, then reliability is improved, but device complexity increases
Solution Approach 1:
The MIMO system is divided into separate encoder and decoder blocks that can be independently implemented and optimized. This segmentation enhances robustness by providing dedicated processing paths while controlling device complexity through modular design that allows selective implementation based on system requirements.
3Adaptability or versatility
If conventional broadcast system compatibility is maintained, then adaptability is improved, but data transmission efficiency is limited
Solution Approach 1:
The broadcast system is designed with multi-functionality to support both conventional broadcast modes and enhanced MIMO modes. The system can adaptively select between different processing paths, maintaining compatibility with conventional systems while enabling improved data transmission efficiency when MIMO capabilities are available, thus resolving the trade-off between adaptability and productivity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is a broadcasting signal receiver. A broadcasting signal receiver, according to one embodiment of the present invention, comprises: an OFDM demodulator, which OFDM demodulates PLP data and signaling information that are included in a broadcasting signal; a MISO decoder, which MISO decodes MISO-type PLP data, which is included in the PLP data, and the signaling information; a frame de-mapper, which parses a frame by cell de-mapping the PLP data and the signaling information; and a BICM decoder, which bit de-interleaves and FEC decodes the PLP data and the signaling information, wherein the BICM decoder further includes a MIMO decoder, which MIMO decodes MIMO-type PLP data included in the PLP data, and the frame de-mapper further extracts the signaling information about the next frame, which is included in the frame, from a data symbol section of the frame.