UWB Channel Impulse Response Estimation Using Phase Slopes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ultra-wideband (UWB) communication technologies face challenges in accurately determining the angle of arrival (AoA) of UWB signals, which affects the precision of location-based services and user experience.
Innovation Solution
An electronic device equipped with multiple antennas and a wireless communication module is configured to obtain phase information corresponding to channel impulse response (CIR) indices, and determine information on UWB signals based on the slope between these phase information pieces, thereby improving the accuracy of AoA estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If phase information from multiple CIR indices is used to determine UWB signal information, then measurement precision of AoA is improved, but device complexity increases due to additional signal processing requirements
Solution Approach 1:
The patent segments the channel impulse response into multiple discrete CIR indices, each providing phase information. By dividing the signal processing task into separate index-based measurements and then combining results through slope calculation, the system achieves higher precision AoA determination while managing complexity through structured segmentation of the processing pipeline.
Solution Approach 2:
The patent transitions from single-phase measurement to multi-dimensional analysis by incorporating phase information across multiple CIR indices. This dimensional expansion allows the system to extract slope information that provides more accurate AoA determination, effectively using an additional dimension (CIR index variation) to improve measurement precision.
2Measurement precision
If multiple antennas are used to receive UWB signals for AoA calculation, then measurement precision is improved, but device complexity increases due to additional hardware components
Solution Approach 1:
The patent makes the multiple antenna system multi-functional by enabling each antenna to perform both signal reception and phase measurement across multiple CIR indices. This universal approach allows the same hardware components to serve multiple purposes: receiving UWB signals, extracting phase information, and enabling slope-based AoA calculation, thereby improving precision without proportionally increasing complexity.
3Measurement precision
If slope calculation between phase information pieces is performed, then measurement precision of signal information is improved, but loss of time increases due to additional computational steps
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing phase information for multiple CIR indices before the final AoA determination. This preparatory step organizes the phase data in advance, allowing the slope calculation to proceed efficiently using pre-processed information, thereby reducing the actual processing time required during critical measurement phases.
Solution Approach 2:
The patent implements skipping by directly calculating the slope between phase information pieces without performing intermediate complex transformations. This streamlined approach rushes through the essential computation step, obtaining accurate signal information while minimizing the time spent on processing by eliminating unnecessary intermediate calculations.
Data Source
AI summary
In one embodiment, an electronic device may include a plurality of antennas, at least one wireless communication module configured to transmit and receive wireless signals through the plurality of antennas, and at least one processor operatively connected to the wireless communication module. The at least one wireless communication module or the at least one processor may be configured to, based on one or more ultra-wide band (UWB) signals received from a target device, obtain first pieces of phase information corresponding to first channel impulse response (CIR) indices and second pieces of phase information corresponding to second CIR indices, and determine information on the one or more UWB signals based on a slope between the first pieces of phase information and a slope between the second pieces of phase information.