Space Exploration Technologies has filed a patent for a wireless communications system that includes a pre-distortion actuator and a phased antenna array. The pre-distortion actuator uses a behavioral model to predict the input-output relationship of the transmit chain and cancels out nonlinearities in the output signal. The behavioral model is updated based on feedback from a receiver. GlobalData’s report on Space Exploration Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Space Exploration Technologies, V2V communication antennas was a key innovation area identified from patents. Space Exploration Technologies's grant share as of September 2023 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
Wireless communications system with pre-distortion actuator and phased antenna array
A recently filed patent (Publication Number: US20230308338A1) describes a system for improving the performance of wireless communication systems. The system includes a modulator that generates a carrier-modulated input signal. This signal is then received by a pre-distortion actuator, which converts it into an output signal. The pre-distortion actuator utilizes a behavioral model to predict the input-output relationship of the transmit chain, which includes amplifiers and antennas. By applying a correction to the carrier-modulated input signal based on the behavioral model, the pre-distortion actuator cancels out nonlinearities in the system. The output signal is then transmitted by a phased antenna array, which consists of multiple power amplifiers and antenna elements.
The system also includes an adaptation engine that dynamically adapts the pre-distortion actuator based on feedback received from a receiver. This feedback is generated by the receiver, which receives the output signal and evaluates its quality. The adaptation engine updates the lookup table parameter element values of the pre-distortion actuator to maintain accurate compensation for nonlinearities over time.
The patent claims that the system can compensate for various nonlinearities associated with the phased antenna array, power amplifiers, coupling between antenna elements, variations in gain, and signal distortions or degradation in the receiver. The system can be implemented in a satellite communications system, with the modulator, pre-distortion actuator, and phased antenna array included in satellites, gateways, repeaters, user terminals, or other communication nodes.
Another embodiment of the system includes a communication node, such as a satellite, gateway, repeater, or user terminal. This communication node also features a pre-distortion actuator, phased antenna array, and an adaptation engine. The receiver generates feedback based on the output signal received over the air interface, and the adaptation engine dynamically adapts the pre-distortion actuator to maintain accurate compensation.
Overall, this patent describes a system that utilizes a pre-distortion actuator with a behavioral model to improve the performance of wireless communication systems. By canceling out nonlinearities, the system aims to enhance signal quality and reduce distortions in the transmission process.