Distributed Transmitter Array for Scalable High-Order Modulation
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Solution Overview
Problem
Existing communication systems face challenges with high power consumption, limited scalability, and inefficiency in generating high-order modulations at high-mmW and THz frequencies, leading to distorted power generation efficiency and increased error vector magnitude (EVM) in receivers.
Innovation Solution
A distributed transmitter topology with a plurality of equivalent transmitter units, each including an antenna and a QPSK modulator, allows for selective activation and independent control, reducing the need for digital-to-analog converters and optimizing power amplifiers for improved power efficiency and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If existing communication systems use high-mmW and THz frequencies for high data rate communication, then communication speed is improved, but power consumption increases and power generation efficiency deteriorates
Solution Approach 1:
The transmitter is divided into multiple distributed transmitter units, each capable of independent operation. This segmentation allows the system to achieve high data rates through spatial multiplexing while each unit operates at lower power levels, improving overall power efficiency and reducing the burden on power generation at high-mmW frequencies.
Solution Approach 2:
The system transitions from single-carrier frequency-domain multiplexing to spatial-domain multiplexing by deploying multiple transmitter units in different spatial locations. This dimensional change enables high data rates through spatial diversity while allowing each individual unit to operate more efficiently.
2Use of energy by moving object
If distributed transmitter units are used to improve power efficiency, then power consumption is reduced, but device complexity increases
Solution Approach 1:
Multiple distributed transmitter units are merged into a coordinated MIMO system with unified control and signal processing. This combining approach manages the complexity of having multiple units through centralized coordination, allowing power efficiency benefits to be realized while maintaining manageable system complexity through standardized unit designs.
3Speed
If conventional transmitter designs are used to achieve high-order modulations, then data rate is improved, but scalability is limited and fabrication errors increase
Solution Approach 1:
The transmitter is segmented into multiple identical or similar transmitter units that can be independently designed, fabricated, and deployed. This segmentation enables scalable system design where units can be added or removed based on requirements, and reduces fabrication errors through standardized unit designs that can be mass-produced with consistent performance.
Solution Approach 2:
The system achieves high-order modulations by changing spatial parameters (number of active transmitter units, their positions, and activation patterns) rather than requiring complex single-unit designs. This parameter-based approach improves scalability and reduces sensitivity to fabrication variations in individual units.
Data Source
AI summary
Apparatus, systems, and methods for a transmitter array for enhanced communication systems may be provided. According to an aspect a transmitter array may be provided. The transmitter array may include a plurality of equivalent transmitter units. Each equivalent transmitter unit may include an antenna and a QPSK modulator. Each equivalent transmitter unit may be selectively activatable. In some embodiments, upon activation of a set of equivalent transmitter units selected from the plurality of equivalent transmitter units, a desired modulated output signal is generated. According to another aspect, a method of generating a desired modulated output signal may be provided. The method may include receiving a plurality of local oscillator (LO) signals at a transmitter array. The method may further include selectively activating a set of equivalent transmitter units of the plurality of equivalent transmitter units to generate the desired modulated output signal.