Layered MIMO Broadcast Transmission Using Polarized Enhanced Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next-generation terrestrial broadcasting systems do not support the combination of multi-antenna transmission technology with layered-division multiplexing, limiting their ability to efficiently transmit and receive broadcast signals with enhanced data transfer rates and resolutions like 4K-UHD and HD.
Innovation Solution
A broadcast signal transmission apparatus and method that utilizes Multiple-Input Multiple-Output (MIMO) Bit-Interleaved Coded Modulation (BICM) to divide enhanced layer data into signals with different polarizations, combining core and enhanced layer signals for transmission through multiple antennas, with controlled transmission powers and signal configurations to optimize data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-antenna transmission technology and layered-division multiplexing are used separately, then transmission performance is improved, but the system cannot achieve enhanced data transfer rates when combining both technologies
Solution Approach 1:
The patent combines multi-antenna transmission technology with layered-division multiplexing by integrating MIMO BICM encoding with layered signal structures. The transmission apparatus encodes core and enhanced layer data separately using MIMO BICM, then transmits them through multiple antennas with different polarizations, achieving synergistic performance improvement that neither technology can achieve alone.
Solution Approach 2:
The patent segments the transmission system into distinct functional components: a MIMO BICM encoding unit that processes core and enhanced layer data separately, a signal generation unit that creates layered signals, and a transmission unit that sends signals through multiple antennas. This segmentation allows each component to be optimized independently while working together to achieve enhanced data transfer rates.
2Adaptability or versatility
If layered-division multiplexing transmits different services with different powers, then service diversity is provided, but signal power management becomes complex
Solution Approach 1:
The patent applies local quality by assigning different transmission powers to different signal layers locally. The core layer signal and enhanced layer signal are transmitted with different power levels optimized for their respective service requirements. The reception apparatus independently processes each layer with appropriate power levels, avoiding the need for complex global power management while maintaining service diversity.
3Productivity
If multiple antennas with different polarizations are used, then transmission performance is improved, but receiver compatibility becomes challenging
Solution Approach 1:
The patent achieves universality by designing a transmission system that can serve both single-antenna and multi-antenna receivers. The transmission apparatus generates signals that can be received and processed by receivers with different antenna configurations. Single-antenna receivers can process the transmitted signals using their single antenna, while multi-antenna receivers can utilize multiple antennas with different polarizations to achieve enhanced performance, ensuring backward compatibility and forward scalability.
Data Source
AI summary
Disclosed herein are a broadcast signal transmission/reception method using multiple antennas and layered-division multiplexing and an apparatus for the same. A broadcast signal transmission apparatus includes a Multiple-Input Multiple-Output (MIMO) Bit-Interleaved Coded Modulation (BICM) unit for dividing enhanced layer data into two enhanced layer signals having different polarizations, a combination unit for generating a multiplexed signal corresponding to a first transmitting antenna by combining a core layer signal corresponding to core layer data with a first enhanced layer signal, and transmission signal generation units for generating a first transmission signal, corresponding to the multiplexed signal and transmitted through the first transmitting antenna, and a second transmission signal, corresponding to a second enhanced layer signal and transmitted through a second transmitting antenna.