Matched Filtering Signals for Precise 5G Sensing Estimation
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Solution Overview
Problem
The integration of sensing capabilities in 5G-advanced communication systems leads to parameter estimation performance loss due to filtering by the receive-end device, which increases the false alarm rate.
Innovation Solution
A communication method and apparatus that involves sending and receiving signals based on specific coefficients, allowing peer communication apparatuses to perform matched filtering and reduce parameter estimation performance loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the receive-end device performs filtering on the received signal, then the false alarm rate is reduced, but the parameter estimation precision deteriorates
Solution Approach 1:
The transmit-end device performs filtering on the sensing signal before transmission. This preliminary filtering action removes unnecessary frequency components in advance, so that when the receive-end device receives the signal, it can perform parameter estimation without introducing additional filtering that would degrade precision. The filtering is done at the transmit end rather than the receive end, preventing the harmful effect on estimation precision while still reducing false alarm rates.
2Measurement precision
If the transmit-end device sends signals with coefficients determined based on a first coefficient, then the sensing accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent uses parameter changes by determining signal coefficients based on a first coefficient (which may be channel state information or other parameters). The transmit-end device adjusts the sensing signal coefficients according to the first coefficient, enabling adaptive signal transmission that improves sensing accuracy. The system dynamically changes signal parameters based on channel conditions without requiring complex additional hardware, achieving improved accuracy through software-based parameter adjustment.
Data Source
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AI summary
Embodiments of this application relate to the field of communication technologies, and provide a communication method and apparatus, to reduce a parameter estimation performance loss caused by filtering introduced by a receive-end device. According to the method, a first communication apparatus sends first information, where the first information indicates that a first signal [a(i)] and/or a second signal [b(j)] is a signal determined based on [c(h)], or indicates that neither [a(i)] nor [b(j)] is a signal determined based on [c(h)]; and sends the first signal and the second signal, or receives the first signal and the second signal.