Multi-Antenna Transmission Method for Broadcasting Signals
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Solution Overview
Problem
Conventional broadcasting systems cannot apply different multi-antenna transmission methods to high priority (HP) and low priority (LP) signals, as they combine both signals into one stream, failing to satisfy the distinct characteristics of HP and LP signals.
Innovation Solution
The system generates separate HP and LP signals based on user-required quality characteristics and uses a multi-antenna transmission method appropriate for each, employing diversity for HP signals and spatial multiplexing for LP signals, with a time division technique to transmit them via multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If HP and LP signals are combined into one stream for transmission, then the system structure is simplified, but different multi-antenna transmission methods cannot be applied to satisfy distinct signal characteristics
Solution Approach 1:
The system dynamically switches between combining HP and LP signals into a single stream and separating them into independent streams based on service requirements. The signal processing path is made flexible rather than fixed, allowing adaptation to different transmission scenarios.
Solution Approach 2:
The patent segments the transmission system into separate processing paths for HP and LP signals. Each signal type can be processed independently with appropriate multi-antenna methods, while maintaining the option to combine them when simplicity is prioritized.
2Device complexity
If a single multi-antenna transmission method is used for both HP and LP signals, then the device complexity is reduced, but the reliability for HP signals and data rate for LP signals cannot be optimized simultaneously
Solution Approach 1:
Different multi-antenna transmission methods are applied to different signal types based on their specific requirements. HP signals receive diversity methods for reliability, while LP signals receive spatial multiplexing for high data rate, optimizing each signal's transmission quality locally.
3Reliability
If HP signals use diversity method and LP signals use spatial multiplexing method, then transmission performance is optimized, but the system complexity increases due to separate signal processing
Solution Approach 1:
The signal processing architecture is made dynamic, allowing the system to switch between combined and separate processing modes. This reduces complexity when full optimization is not required while enabling optimized performance when needed.
Solution Approach 2:
The transmission system is designed with multi-functionality to handle both HP and LP signals through either combined or separate processing paths. The same physical infrastructure supports multiple operational modes, reducing overall system complexity.
Data Source
AI summary
An apparatus and a method for transmitting broadcasting signals in a broadcasting system having multi-antenna are provided. The apparatus comprises at least one antenna, a signal generator for generating two or more broadcasting signals to be transmitted, at least two of the two or more broadcasting signals being generated according to different user-required quality characteristics, a multi-antenna modulator for modulating each of the broadcasting signals according to one of a plurality of multi-antenna transmission methods selected for each of the broadcasting signals according to the user-required quality characteristics of the respective broadcasting signals, and a transmitter for transmitting the modulated signals via the at least one antenna.