Flexible OFDM Frame Configuration for Digital Broadcasting
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Solution Overview
Problem
Current digital broadcasting systems, such as the DVB-T2 standard, lack flexibility in frame configuration, which limits the efficiency of data transmission and reception.
Innovation Solution
The development of a transmitting and receiving method that allows for flexible frame configuration using MIMO (Multiple-Input Multiple-Output) techniques, including spatial multiplexing, space time block codes, and precoding, to enhance data transmission efficiency and adapt to varying data streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed frame configuration is used in digital broadcasting systems, then system stability is maintained, but transmission efficiency and adaptability to varying data streams are limited
Solution Approach 1:
The patent applies dynamics by enabling the frame configuration to change adaptively based on transmission conditions. The system dynamically adjusts frame structures, modulation schemes, and coding rates according to channel quality and data stream requirements, transforming the static frame configuration into a dynamic, condition-responsive structure that optimizes transmission efficiency while maintaining system stability through controlled adaptation
2Productivity
If traditional time-division multiplexing is used, then system complexity is kept manageable, but data transmission rate and communication quality are limited
Solution Approach 1:
The patent merges multiple data streams and modulation techniques within a unified flexible frame structure. By combining time-division multiplexing with adaptive modulation and coding, and integrating multiple data streams into a cohesive transmission framework, the system achieves higher transmission rates while managing complexity through structured integration rather than separate handling of each component
Solution Approach 2:
The patent creates a universal frame configuration that can accommodate multiple data streams, modulation schemes, and coding rates within a single flexible structure. This multi-functional frame design eliminates the need for separate specialized configurations for different transmission scenarios, thereby increasing data transmission rate while avoiding the complexity of multiple dedicated systems
Data Source
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AI summary
A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating a plurality of transmission data to a plurality of areas; and transmitting the frame. The plurality of areas are each identified by at least one time resource among resources and at least one frequency resource among frequency resources. The frame includes a first period in which a preamble is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division. The second period includes a first area, and the first area includes a data symbol generated from first transmission data, a data symbol generated from second transmission data and subsequent to the data symbol generated from the first transmission data, and a dummy symbol subsequent to the data symbol generated from the second transmission data.