UWB Receiver Diversity Settings for Synchronization and Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ultra-wide band (UWB) wireless signals face challenges in synchronization and reception due to low signal-to-interference and noise ratios (SINR) and high signal dispersion, especially in indoor environments, where interference from other UWB devices complicates accurate packet synchronization and data reception.
Innovation Solution
A method and apparatus that characterize signal quality parameters for multiple diversity settings, allowing a receiver to select optimal settings for synchronization and data reception by choosing antennas that minimize delay spread for synchronization and maximize signal-to-noise ratio (SNR) for data transmission, using antenna diversity to mitigate multi-path interference and channel dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single receive diversity setting is used for both synchronization and data reception, then the system complexity is reduced, but the synchronization accuracy and data reception quality cannot be optimized simultaneously for different signal conditions
Solution Approach 1:
The patent implements dynamic selection of receive diversity settings based on real-time signal quality assessment. The receiver characterizes signal quality parameters and selectively applies different diversity settings (first for synchronization, second for data reception) according to the specific requirements of each processing stage, transforming a static configuration into an adaptive dynamic system that optimizes performance for each function.
Solution Approach 2:
The patent applies different receive diversity settings to different functional stages of signal processing. The first diversity setting is optimized specifically for synchronization tasks, while the second diversity setting is optimized for data reception tasks. This local optimization allows each stage to use the most appropriate configuration for its specific requirements rather than using a compromise single setting for both.
2Object-affected harmful factors
If UWB signals are transmitted with low power as mandated by FCC regulations, then interference to other devices is reduced, but the signal-to-interference and noise ratio (SINR) deteriorates making synchronization and reception difficult
Solution Approach 1:
The patent changes the parameter of receive diversity setting based on signal quality characterization. By assessing parameters such as signal strength, interference level, and noise characteristics, the system dynamically selects the appropriate diversity setting (first or second) to optimize the receiver's ability to extract reliable data despite the low SINR conditions imposed by low-power UWB transmission.
3Reliability
If multiple diversity settings are implemented with separate optimization for synchronization and data reception, then the reliability of both functions is improved, but the device complexity and configuration overhead increases
Solution Approach 1:
The patent implements a self-service mechanism where the receiver autonomously characterizes signal quality parameters and selects the appropriate diversity setting without external intervention. The system automatically assesses the signal conditions and determines whether to use the first or second diversity setting for each processing stage, eliminating the need for manual configuration or complex control overhead while maintaining optimized performance.
Data Source
AI summary
Methods and systems of receiving wireless signals are disclosed. One method includes a receiver characterizing signal quality parameters of receive signals for a plurality of receive diversity settings. The receiver selects a first receive diversity setting for synchronizing the receiver with the receive signal based on the characterized signal quality parameters. The receiver selects a second receive diversity setting for receiving data with the receive signal based on the characterized signal quality parameters.