Channel Width Agile Communication Method for Secure Transmission
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Solution Overview
Problem
Existing secure communication methods, such as frequency hopping and digital cryptography, are vulnerable to decryption when the channel bandwidth is fixed, allowing unauthorized access to the transmitted information.
Innovation Solution
A channel width agile communication method that dynamically changes the channel width based on a variable channel agile spectrum, combined with frequency hopping, to ensure secure transmission by using a channel generation circuit at the transmitting end and a channel detection circuit at the receiving end, synchronized in time to maintain secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping and digital cryptography are used for secure communication, then communication security is improved, but the channel bandwidth occupied remains fixed making it vulnerable to spectrum analysis and decryption
Solution Approach 1:
The patent applies dynamics by making the channel bandwidth variable rather than fixed. The system dynamically adjusts the channel width occupied by communication signals according to a predetermined pattern, creating temporal variability in the spectral occupation. This dynamic characteristic prevents static spectrum analysis and enhances security beyond traditional frequency hopping.
Solution Approach 2:
The patent changes the spectral parameter of channel bandwidth occupation. Instead of maintaining a fixed bandwidth occupation, the system varies the channel width parameter over time according to a predetermined pattern, creating a time-varying spectral signature that is resistant to conventional spectrum analysis and decryption methods.
2Device complexity
If fixed channel width is used for communication, then device complexity is reduced, but communication security deteriorates as signals can be captured and decrypted using spectrum analyzers
Solution Approach 1:
The patent applies preliminary action by establishing a predetermined pattern for channel width variation before communication begins. Both transmitting and receiving ends are pre-configured with the same pattern, allowing the receiving end to anticipate and correctly interpret the variable bandwidth signals without requiring complex real-time analysis or adaptive algorithms.
3Reliability
If channel width is dynamically varied, then communication security and anti-interference capability are improved, but device complexity increases due to channel generation and detection circuits
Solution Approach 1:
The patent applies local quality by implementing channel width variation only in the spectral domain where communication signals are transmitted, while other parts of the spectrum remain unaffected. This localized approach allows security enhancement through variable bandwidth without requiring complete system restructuring or complex processing across all signal parameters.
Data Source
AI summary
The present disclosure relates to a communication method related with channel width agile. The method uses a channel generation circuit at a signal transmitting end to generate a channel whose channel width can be changed according to a certain law, and a channel detection circuit at a signal receiving end corresponding thereto to detect the corresponding channel width by the same channel width agile law, thereby achieving the secure reception of the signal. Due to the agility of the channel width, communication security is ensured, and it does not conflict with other technologies (such as frequency hopping), and the channel width can be dynamically allocated. In this way, the advantages of high security, compatibility, and high spectrum utilization can be achieved. Meanwhile, the method realizes the maximum possible optimization of the channel and is very creative.