Joint Signal Detection and Direction of Arrival Estimation
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Solution Overview
Problem
Current methods for joint signal detection and direction of arrival estimation are costly, time-consuming, and not applicable to all types of signals, as they require extensive calculations and are limited to specific implementations, such as CDMA, and do not efficiently filter out interfering signals before forwarding them to a modem.
Innovation Solution
A method and device for joint signal detection and direction of arrival estimation that uses an antenna array, beamformer, and signal characteristics detector to identify and filter out signals with known characteristics before forwarding them to a modem, reducing the number of calculations and increasing transmission and reception ranges without increasing antenna gain, and implementing digital solutions for spatial scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional signal detection methods are used, then signal detection accuracy is maintained, but computational complexity and processing time increase significantly
Solution Approach 1:
The patent performs preliminary signal detection and direction of arrival estimation before the signal is forwarded to the modem. By pre-identifying signals with known characteristics and estimating their direction of arrival in advance, the system reduces the computational burden on the modem and accelerates overall signal processing throughput.
Solution Approach 2:
The patent extracts and processes only signals with known characteristics before modem processing. By separating the detection of known characteristic signals from general signal processing, the system reduces computational complexity while maintaining detection accuracy for targeted signals.
2Productivity
If signal processing is performed before modem, then processing speed increases, but system complexity increases
Solution Approach 1:
The patent segments the signal processing function into two distinct stages: pre-modem processing for signals with known characteristics (detection and direction estimation), and post-modem processing for general signal handling. This segmentation enables faster processing of known signals while keeping the overall system architecture manageable through modular design.
3Measurement precision
If joint detection and estimation is implemented, then signal identification accuracy improves, but computational load increases
Solution Approach 1:
The patent performs joint detection and direction of arrival estimation as a preliminary action before modem processing. By combining these functions early in the signal chain for known characteristic signals, the system achieves high identification accuracy while reducing the computational load on subsequent processing stages.
Data Source
AI summary
A method and corresponding device for joint signal detection and direction of arrival estimation, based on the ability to identify both the existence and direction of arrival of a required signal featuring known characteristics, before it is forwarded to a modem. Optionally, after identifying the existence and direction of arrival of a required signal, the direction of arrival is entered into a beamformer featuring high resolution, for obtaining the signal coming from the required direction of arrival. The calculated signal is then entered into a modem.