Satellite Signal Interference Cancellation via Composite Synthesis
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Solution Overview
Problem
In satellite communications, interference from overlapping signals reduces data throughput and efficiency, especially when separating signals by frequency or physical distance is not feasible due to unknown or hostile sources, and existing methods may decrease information transmission rates.
Innovation Solution
A system and method that utilize a processor to receive composite signals, determine symbol rates and modulation estimates, resample, and synthesize signals to cancel interfering coherent signals from the noise floor, thereby reducing noise and maximizing bandwidth use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If signals are separated by frequency or physical distance to reduce interference, then interference is reduced, but the amount of information that can be transmitted is reduced and transmission efficiency diminishes
Solution Approach 1:
The patent extracts and removes interfering signals from the composite signal by identifying characteristic features (frequency, amplitude, phase) of individual signals within the composite signal, then selectively eliminating the interfering components while preserving the desired signal components, thereby reducing interference without requiring frequency or spatial separation that would limit transmission capacity
Solution Approach 2:
The patent changes the parameters of the received composite signal through signal processing operations including resampling at multiple rates, filtering, and transformation to separate and identify individual signal components, allowing interference reduction while maintaining the ability to transmit multiple signals simultaneously at high rates
2Object-affected harmful factors
If signals are separated by frequency or physical distance to reduce interference, then interference is reduced, but the available bandwidth for information transmission is limited
Solution Approach 1:
The patent extracts interfering signal components from the composite signal by analyzing signal characteristics and selectively removing unwanted components, enabling full utilization of available bandwidth for transmitting multiple signals simultaneously without requiring frequency separation that would partition the bandwidth
Solution Approach 2:
The patent merges multiple signal transmissions within the same frequency band by processing the composite signal to separate and preserve multiple desired signals while removing interference, thereby combining the capacity of multiple channels into the available bandwidth without requiring physical or frequency separation
Data Source
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AI summary
The disclosure provides systems and methods for interference reduction in wireless communications. The method can include receiving a composite signal having multiple overlapping constituent signals and a noise floor. The noise floor can have at least one interfering coherent signal. The system can characterize and synthesize the multiple overlapping constituent signals without a priori know. The method can include receiving a secondary input comprising the at least one interfering coherent signal. The method can include canceling the interfering coherent signal from the noise floor. The method can include outputting the first signal and the second signal having a reduced noise floor.