A-priori Information Embedding for Flexible Digital Broadcasting Adaptation
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Solution Overview
Problem
Current digital broadcasting systems are inflexible and costly due to the need for device replacement when channel bandwidth and sampling frequency change, as they rely on fixed knowledge of these parameters, which can vary with technological advancements.
Innovation Solution
A method and apparatus for transmitting and receiving a-priori information, including the channel bandwidth and sampling frequency, allowing devices to adapt without prior knowledge, using techniques such as chirp signals and amplitude diversity to embed this information within data signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed knowledge of channel bandwidth and sampling frequency is used at the receiver, then the system is simple to implement, but the system cannot adapt to technological advancements and requires device replacement when parameters change
Solution Approach 1:
The transmission apparatus embeds a-priori information containing channel bandwidth and sampling frequency parameters into the transmitted signal before reception. This preliminary inclusion of necessary information allows the reception apparatus to adapt to different parameters without requiring complex pre-configured knowledge, resolving the contradiction between adaptability and complexity by proactively providing the needed parameters.
Solution Approach 2:
The patent introduces an intermediary mechanism where a-priori information is transmitted separately or alongside the main data signal to carry channel bandwidth and sampling frequency parameters. This intermediary information carrier enables the reception apparatus to adapt to varying parameters without directly increasing the complexity of the main signal processing, thus resolving the adaptability-complexity contradiction.
2Adaptability or versatility
If a-priori information is appended to the data signal, then the reception apparatus can determine sampling frequency and channel bandwidth, but the data signal size increases
Solution Approach 1:
The a-priori information is embedded in a localized portion of the signal structure rather than throughout the entire signal. This localized embedding minimizes the increase in overall data signal size while still providing the necessary channel bandwidth and sampling frequency information for adaptation, thus resolving the contradiction between flexibility and data quantity.
Solution Approach 2:
Instead of transmitting complete parameter sets for all possible scenarios, the system transmits only the necessary a-priori information parameters (channel bandwidth and sampling frequency) when needed. This partial action approach minimizes the increase in data signal size while maintaining adaptability to different channel conditions.
Data Source
AI summary
Methods and apparatuses are provided for transmitting and receiving a-priori information. The transmitting method includes generating, by circuitry of a transmission apparatus, the a-priori information based on a sampling frequency and a channel bandwidth of a signal to be transmitted. The a-priori information is appended to a data signal by the circuitry. The circuitry transmits the data signal including the appended a-priori information to a reception apparatus.