AMP Signal Decoding via Cross-Modulation Without Stable Oscillation
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Solution Overview
Problem
Ambient power (AMP) devices face challenges in obtaining and decoding intermediate frequency signals due to their low complexity, low cost, and low power consumption, which limits their ability to maintain accurate timing and frequency stability, and they lack a mechanism to convert received radio frequency signals efficiently.
Innovation Solution
The AMP device performs cross-modulation or inter-modulation processing on received signals to obtain an intermediate frequency signal, allowing for decoding without the need for an accurate oscillation signal, thereby reducing power consumption and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If AMP device uses traditional signal processing methods, then signal decoding can be achieved, but device complexity and power consumption increase
Solution Approach 1:
The patent replaces traditional mechanical signal processing methods with cross-modulation processing. Instead of using complex down-conversion and mixing operations that require accurate oscillation signals and sophisticated signal processing chains, the system uses cross-modulation between two received signals to directly generate the intermediate frequency signal for decoding. This substitution of processing methodology significantly reduces device complexity while maintaining decoding reliability
Solution Approach 2:
The patent changes the fundamental parameter of signal processing by using cross-modulation rather than traditional down-conversion. By changing the processing approach from frequency translation based on local oscillation to cross-modulation based on signal interaction, the system achieves simplified processing with reduced complexity while preserving the ability to extract and decode information from received signals
2Measurement precision
If AMP device maintains accurate timing and frequency stability, then signal decoding accuracy improves, but power consumption increases
Solution Approach 1:
The patent applies self-service by using the received signals themselves to generate the intermediate frequency signal through cross-modulation. Instead of requiring external accurate oscillation signals and sophisticated timing mechanisms to maintain frequency stability, the system uses the signals already received from the transmitter, which inherently contain the necessary frequency information. This self-service approach eliminates the need for power-intensive frequency locking and timing synchronization mechanisms while maintaining decoding accuracy
Solution Approach 2:
The patent introduces cross-modulation as an intermediary processing step that bridges the received signals and the decoding process. This intermediary mechanism automatically handles frequency translation and signal conditioning without requiring direct control over timing and frequency parameters. The cross-modulation process acts as a mediator that extracts the necessary frequency information from the received signals, eliminating the need for power-consuming frequency stabilization mechanisms
3Use of energy by moving object
If AMP device uses cross-modulation processing, then power consumption is reduced, but device complexity changes
Solution Approach 1:
The patent extracts and eliminates unnecessary components from the traditional signal processing architecture. By using cross-modulation, the system removes the need for accurate local oscillation signal generation, complex down-conversion circuits, and sophisticated mixing mechanisms. This extraction of unnecessary elements significantly reduces power consumption while simplifying the overall device architecture to focus only on essential signal reception and cross-modulation processing functions
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
This method enables efficient decoding of received signals while maintaining low power consumption and cost, addressing the limitations of AMP devices in maintaining accurate timing and frequency stability.
Implementation Method 1
performing, by the AMP device, a cross-modulation or inter-modulation processing on the first signal and the second signal to obtain a third signal
Implementation Method 2
performing, by the AMP device, a cross-modulation or inter-modulation processing on the first signal and the second signal to obtain a third signal
Data Source
AI summary
A wireless communication method includes: receiving, by an AMP device, a first signal and a second signal; performing, by the AMP device, a cross-modulation or inter-modulation processing on the first signal and the second signal to obtain a third signal; and decoding, by the AMP device, the first signal according to the third signal.