Dual-Modulation Signal Protocol for Spectrally Efficient Data Encoding
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Solution Overview
Problem
Existing signal encoding methods rely on multiple signals and hardware/software processing to convey multiple datasets, which is inefficient in terms of spectral efficiency.
Innovation Solution
A signal encoding and decoding protocol that combines pulse width and amplitude modulation to convey multiple datasets in a single carrier signal, using a first processor for pulse width modulation and a second processor for amplitude modulation, with an output controller to combine these signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple signals are used to convey multiple datasets, then information transmission capability is improved, but device complexity and spectral efficiency deteriorate
Solution Approach 1:
The patent combines multiple independent datasets into a single modulated signal by multiplexing them in the time domain. The first dataset modulates the amplitude of a carrier signal, while the second dataset modulates the frequency of the same carrier, creating a composite signal that carries both datasets simultaneously through a single transmission channel, thereby reducing hardware complexity while maintaining information transmission capability
Solution Approach 2:
The single carrier signal performs multiple functions by simultaneously encoding multiple datasets through different modulation schemes. The same signal infrastructure (transmitter, channel, receiver) handles multiple data streams, making the system more versatile and reducing the need for separate dedicated channels for each dataset
2Loss of information
If multiple signals are used to convey multiple datasets, then information transmission capability is improved, but spectral efficiency deteriorates
Solution Approach 1:
Multiple datasets are merged into a single signal transmission, allowing simultaneous conveyance of multiple information streams through one spectral resource. The amplitude-modulated and frequency-modulated components share the same carrier frequency and transmission medium, maximizing spectral utilization
Solution Approach 2:
The patent transitions from using multiple separate signals (one-dimensional approach) to using a single signal with multiple modulation dimensions (amplitude and frequency). This dimensional expansion allows multiple datasets to be encoded in different characteristics of the same signal, improving spectral efficiency by utilizing the signal's multi-dimensional properties
3Productivity
If multiple signals are used to convey multiple datasets, then processing capabilities are improved, but device complexity deteriorates
Solution Approach 1:
The reception and processing of multiple datasets are merged into a single signal processing chain. The receiver extracts both amplitude and frequency modulations from one incoming signal, performing parallel processing of multiple data streams through unified hardware and software, thereby improving processing capabilities while reducing overall system complexity
Data Source
AI summary
A signal encoding and decoding protocol to convey discrete sets of information combined in a single carrier signal is disclosed. The protocol uses modulation of both amplitude and pulse width to carry multiple sets of information. A first signal is pulse width modulated to encode a first data and a second signal is pulse amplitude modulated to encode a second data. The two modulated signals are combined to generate a carrier signal encoded with both the first and second data.