Receiver Interference Timing Control for Adjacent-Band Noise
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Solution Overview
Problem
The performance of receivers, such as GPS and DVB-T systems, is degraded due to wideband noise generated by communication system transceivers operating in adjacent frequency bands, leading to reduced signal-to-noise ratio (SNR) and potential signal loss, especially when transceivers like GSM systems interfere with satellite positioning or digital video broadcast systems.
Innovation Solution
A device and method that detect interfering signals from communication system transceivers, determine their timing patterns, and manipulate receiver signals during specific time intervals to reduce performance degradation, using techniques like signal attenuation or blocking, to mitigate the impact of external or internal transceiver interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a communication system transceiver and a receiver are integrated in the same device, then device functionality and communication capability are improved, but the receiver performance is degraded due to wideband noise generated by the transceiver
Solution Approach 1:
The patent segments the signal processing into two distinct paths: a first signal processing path for the communication system transceiver and a second signal processing path for the receiver. This segmentation allows independent optimization of each path and enables the receiver to process signals without being affected by the transceiver's wideband noise generation, thus resolving the contradiction between integrated functionality and receiver performance
Solution Approach 2:
The patent extracts the harmful wideband noise effect from the receiver signal path by implementing a separate first signal processing path that handles transceiver operations independently. By taking out the noise-generating processes from the receiver's signal chain, the receiver can maintain its performance while the device retains full communication functionality
2Reliability
If wideband noise filtering is applied to improve receiver performance, then signal-to-noise ratio is improved, but signal processing complexity and device complexity increase
Solution Approach 1:
The patent divides the signal processing into separate first and second signal processing paths, where the second path is specifically optimized for receiver signals. This segmentation allows targeted noise filtering and signal enhancement techniques to be applied only where needed, improving signal-to-noise ratio without unnecessarily complicating the entire device's signal processing architecture
Solution Approach 2:
The patent applies different signal processing qualities and techniques to different parts of the system: the first signal processing path handles transceiver communications with appropriate filtering, while the second signal processing path is specifically designed with enhanced noise rejection and signal enhancement capabilities for the receiver, achieving high signal-to-noise ratio without uniform complexity across the entire device
Data Source
AI summary
A device 22 includes a communication system transceiver 40 for exchanging signals in a first frequency band and a receiver 30 for receiving signals in a second frequency band. In order to improve the performance of the receiver. A processing portion 34 of the devices detects the presence of signals interfering with the signals in the second frequency band and also determines a timing pattern for interfering signals based on a timing information which is indicative of the timing for transmissions employed by the transceiver 40. A manipulation of signals reaching the receiver 30 during intervals defined by the determined timing pattern is then done, in order to reduce a performance degradation due to interfering signals originating from a transmitter 21 employing the same timing for transmissions as the transceiver 40. A corresponding method is also disclosed.