UWB Receiver Sampling Cells Correlation Detection
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Solution Overview
Problem
Ultra-wideband (UWB) systems face challenges in signal detection due to the short duration of signal impulses, requiring rapid generation and precise time accuracy, and existing methods like energy detection are inefficient and complex, especially in integrating delay lines for reference signal generation.
Innovation Solution
An ultra-wideband receiver design featuring sets of sampling cells with a predefined delay and a correlator to process correlated impulse doublets, eliminating the need for a reference signal and simplifying construction by using distinct or programmable delay chains, enabling efficient synchronization and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a delay line is used to create a delayed copy of the received signal for correlation detection, then the detection accuracy is improved, but the device complexity and integration difficulty increase significantly
Solution Approach 1:
The patent uses sampled values stored in memory to create a digital copy of the received signal, replacing the physical delay line. The sampled values are stored with their timing information and can be retrieved with precise delay control through digital processing, achieving the same correlation detection function without the integration difficulties of physical delay lines
Solution Approach 2:
The patent replaces the physical/mechanical delay line with a digital sampling and storage system. Instead of using a physical transmission medium to introduce delay, the system captures signal samples in memory and retrieves them with programmable delay control, substituting electronic/digital processing for physical delay mechanisms
2Manufacturing precision
If the delay line length is increased to achieve precise delay control, then the time accuracy is improved, but the integration into miniature circuits becomes practically impossible
Solution Approach 1:
The patent transitions from spatial delay (physical length of delay line) to temporal delay (programmable sample indexing). The delay is controlled by storing samples in memory with timing metadata and retrieving them with digital delay control, moving the delay function from the spatial domain to the temporal/digital domain, enabling precise delay without proportional increase in physical size
3Device complexity
If energy detection method is used for ultra-wideband signal detection, then the detection process is simplified, but the sensitivity and ability to distinguish signal from noise deteriorates
Solution Approach 1:
The patent implements correlation detection where the received signal samples are multiplied with reference signal samples (which can be locally generated or previously stored received signals). This feedback-based correlation process enhances the desired signal while suppressing noise and interference, improving detection sensitivity compared to simple energy detection while maintaining manageable complexity through efficient correlation algorithms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed receiver achieves simplified construction, reduced power consumption, and improved synchronization, allowing for high-speed data transmission with enhanced signal-to-noise ratio and ease of integration into miniature circuits.
Implementation Method 1
at least a first set of sampling cells for sampling the waveform of a received signal; at least a second set of sampling cells for sampling the waveform of the received signal, with a predefined delay δ
Implementation Method 2
at least one correlator for delivering information depending on the correlation between the waveforms thus sampled
Data Source
AI summary
The present invention relates to an ultra-wideband signal receiver comprising:at least a first set of sampling cells for sampling the waveform of a received signal;at least a second set of sampling cells for sampling the waveform of the received signal, with a predefined delay δ; andat least one correlator for delivering information depending on the correlation between the waveforms thus sampled.