Phase-Based Signal Demodulation for Multi-Format Receiver Simplification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional communication systems require multiple components and demodulators to process signals modulated using different techniques, such as M-FSK and OFDM, which complicates simultaneous reception and processing of multiple signals.
Innovation Solution
A system that includes an analog-to-digital converter (ADC), in-phase/quadrature (IQ) generator, Fast Fourier Transform (FFT) component, and phase difference calculation component to sample and demodulate signals, determining bit values based on phase differences between FFT outputs, thereby reducing the need for multiple demodulators and components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional receivers use multiple demodulators and FFT components to process signals modulated using different techniques simultaneously, then signal processing capability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal receiver architecture where a single FFT component and single demodulator can process multiple modulation techniques (M-FSK, OFDM, and phase-modulated signals) through software-configurable algorithms. The receiver uses one FFT component that can be configured via control signals to perform different demodulation functions, eliminating the need for separate hardware demodulators for each modulation type while maintaining the ability to simultaneously receive and process multiple signals with different modulation schemes
Solution Approach 2:
The patent changes the operational parameters of a single demodulator and FFT component through software control to adapt to different modulation techniques. By modifying control signals and algorithm parameters rather than hardware configuration, the system can switch between processing M-FSK, OFDM, and phase-modulated signals using the same physical components, thereby reducing device complexity while preserving versatility
2Measurement precision
If conventional receivers use separate components for different modulation techniques, then demodulation accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs a universal demodulator design where a single hardware component performs multiple demodulation functions through software configuration. This approach reduces manufacturing costs by eliminating the need to produce and assemble multiple separate demodulator units for different modulation techniques, while maintaining demodulation accuracy through specialized algorithms tailored to each modulation type (M-FSK, OFDM, phase-modulated signals)
3Reliability
If conventional receivers require multiple demodulators to process multiple signals simultaneously, then signal reception reliability is improved, but hardware requirements increase
Solution Approach 1:
The patent merges the functionality of multiple separate demodulators into a single integrated demodulator that can simultaneously process multiple signals with different modulation techniques. By combining these functions in one hardware unit with software-based algorithm switching, the system maintains reliable signal reception for multiple concurrent signals while reducing the total quantity of hardware components required
Data Source
AI summary
Certain embodiments provide a system for recovering data from at least one signal. The system can include an analog-to-digital converter (ADC) and in-phase/quadrature (IQ) generator component that can sample a signal recovered from a communication medium to generate a first signal sample and a second signal sample. A Fast Fourier Transform (FFT) component can process the first signal sample to generate a first signal phase and process the second signal sample to generate a second signal phase. A phase difference calculation component can determine a phase difference between the first signal phase and the second signal phase, determine a bit value represented by the signal based on the phase difference, and output the bit value to an end device coupled to the phase difference calculation component.