Three Pseudo-Orthogonal Carrier Components for 50% Capacity Increase
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Solution Overview
Problem
Existing data transmission systems are limited to transmitting 2n bits per unit of transmission time interval using two orthogonal carrier components, restricting the capacity to send more bits per interval.
Innovation Solution
The creation and utilization of three pseudo-orthogonal carrier components from a single carrier frequency, phase-shifted by 120 degrees, to modulate data, enabling the transmission of 3n bits per carrier component, which can be applied in modulation schemes like QAM, OFDM, and QPSK, thereby increasing data transmission capacity by 50%.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two orthogonal carrier components are used for data transmission, then the transmission system is simple and reliable, but the data transmission capacity is limited to 2n bits per unit time interval
Solution Approach 1:
The patent transitions from two-dimensional signal space (two orthogonal carriers) to three-dimensional signal space by introducing a third pseudo-orthogonal carrier component. This dimensional expansion enables the system to transmit 3n bits per unit time interval instead of 2n bits, effectively increasing data transmission capacity by utilizing an additional dimension in the signal constellation.
Solution Approach 2:
The patent employs pseudo-orthogonal carrier components that are phase-shifted by 120 degrees relative to each other. These components are not perfectly orthogonal like traditional sine and cosine carriers, but they provide sufficient orthogonality for reliable demodulation while enabling higher dimensional signal representation. This parameter change in carrier characteristics enables the transition from 2n to 3n bits per symbol.
2Productivity
If three pseudo-orthogonal carrier components are used to transmit 3n bits, then data transmission capacity increases by 50%, but the system complexity increases
Solution Approach 1:
The patent demonstrates that the same three pseudo-orthogonal carrier components can be applied across multiple modulation schemes including QAM, OFDM, and QPSK. This multi-functionality allows the system to achieve 3n bits per symbol capability while maintaining compatibility with existing modulation frameworks, thereby managing system complexity through universal application rather than requiring entirely new modulation techniques.
Data Source
AI summary
Aspects of the present disclosure aim at providing three pseudo-orthogonal waveforms that can be used for transmitting 3n bits (n bits over each waveform) at a given frequency. Use of such three pseudo-orthogonal waveforms can be used in applications such as QAM to create a 3-dimensional QAM, along with use in other like applications such as in Orthogonal frequency-division multiplexing (OFDM), Quadrature Phase Shift Keying (QPSK), Binary Phase Shift Keying (BPSK), among others. The three pseudo-orthogonal waveforms can in general be used in any application where complex number algebra is used, and can help increase transmission capacity by additional 50%.