Transpositional Modulation for Shared-Carrier Data Transmission
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing data traffic and maintaining communication quality due to limitations in bandwidth, particularly in scenarios with high network data traffic or transmission of large data types, where traditional modulation techniques struggle to optimize channel usage effectively.
Innovation Solution
The implementation of transpositional modulation (TM) techniques, which allow for the transmission of additional data on the same carrier signal without affecting the amplitude, frequency, or phase of the existing signal, enabling increased bandwidth utilization by combining TM signals with traditional modulation signals, thereby balancing data usage and preventing degradation in communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional modulation techniques are used to transmit data, then communication compatibility is maintained, but bandwidth utilization is insufficient during high data traffic
Solution Approach 1:
The patent applies transpositional modulation to encode data in the time-domain position of signal cycles rather than in amplitude, frequency, or phase dimensions. This creates an additional encoding dimension that allows traditional modulation signals and TM signals to coexist on the same carrier without interfering with each other, effectively doubling the data transmission capacity while maintaining backward compatibility with traditional receivers.
2Productivity
If additional data is transmitted on the same carrier signal, then bandwidth utilization increases, but signal interference may occur
Solution Approach 1:
The patent segments the data transmission into two independent layers: traditional modulation data encoded in amplitude/phase/frequency, and TM data encoded in the temporal position of signal cycles. This segmentation allows both data streams to be transmitted simultaneously on the same carrier without interference, as they occupy different encoding dimensions and can be independently decoded by respective receivers.
3Adaptability or versatility
If transpositional modulation is implemented, then bandwidth utilization is enhanced, but device complexity increases
Solution Approach 1:
The patent designs the transpositional modulation system to be universally compatible with existing communication infrastructure. Traditional receivers continue to function without modification, while TM-capable devices can optionally enable TM encoding. This multi-functionality approach allows the system to operate in both traditional and enhanced modes, reducing the practical complexity burden while maintaining backward compatibility.
Data Source
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AI summary
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining, by a first device, that a second device is within range for direct communications and that the second device is capable of performing transpositional modulation (TM) communications. Determining to use transpositional modulation to send data to the second device. Sending the data to the second device using a TM signal.