Discrete Spectrum Transceiver Bandwidth Reduction
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Solution Overview
Problem
Conventional signal transmission methods require large bandwidth and costly infrastructure to operate over crowded communication channels, which is inefficient and costly.
Innovation Solution
A discrete spectrum (DS) signal transmitter system that generates and transmits DS signals at different discrete frequencies, using a field-programmable gate array (FPGA) to produce DS signals as harmonics or fundamental frequencies, and an RF mixer and summing amplifier to combine these signals for efficient transmission, along with a receiver that performs a fast Fourier transform to decode the signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional continuous analog signals are used for transmission, then signal continuity is maintained, but bandwidth requirements increase and infrastructure costs rise
Solution Approach 1:
The patent segments the continuous spectrum into discrete frequency components (harmonics of a fundamental frequency). Instead of transmitting a continuous analog signal across a broad bandwidth, the system transmits only specific discrete frequency components that are integer multiples of a base frequency, thereby reducing the total bandwidth required while maintaining signal integrity through selective frequency transmission.
Solution Approach 2:
The patent changes the fundamental parameter of signal representation from continuous amplitude variation to discrete frequency component summation. By expressing signals as sums of discrete harmonic frequencies rather than continuous waveforms, the system achieves more efficient bandwidth utilization and reduced infrastructure requirements while preserving the essential information content.
2Productivity
If multiple signals are transmitted simultaneously over crowded channels, then communication capacity increases, but signal interference and channel congestion worsen
Solution Approach 1:
The patent transitions from time-domain multiplexing to frequency-domain multiplexing by utilizing orthogonal harmonic frequencies. Multiple signals are transmitted simultaneously by assigning them to different discrete frequency components (different dimensions of the frequency spectrum), which are mathematically orthogonal and therefore do not interfere with each other, enabling increased communication capacity without interference.
Solution Approach 2:
The patent uses identical hardware infrastructure for both transmission and reception of discrete spectrum signals. The same circuitry that generates discrete frequency components for transmission can also receive and process these signals, eliminating the need for separate dedicated infrastructure and reducing overall system complexity while maintaining high communication capacity.
3Quantity of substance
If discrete frequency components are used instead of continuous signals, then bandwidth efficiency improves, but signal generation and processing complexity increases
Solution Approach 1:
The patent employs a universal discrete spectrum signal generator that can produce any desired discrete frequency component by adjusting the fundamental frequency and harmonic selection. This single multi-functional device replaces what would otherwise require multiple specialized signal generators for different frequencies, thereby improving bandwidth utilization without proportionally increasing system complexity.
Data Source
AI summary
A discrete spectrum (DS) signal transmitter includes a first circuit element comprising a DS signal generator that generates a plurality of DS signals, each DS signal having a different DS frequency, each DS frequency being (a) a harmonic of a fundamental frequency or (b) the fundamental frequency. A second circuit element receives as an input the DS signals and that generates as an output (a) a finite summation of the DS signals or (b) pulses that represent a mathematical equivalent of a summation of an infinite number of the DS signals. An antenna is electrically coupled to an output of the second circuit element. The analog DS signals transmitted by the DS signal transmitter are received by a DS signal receiver that converts the analog DS signals to DS discrete signals and performs a fast Fourier transform of the DS discrete signals.