u-blox has patented a method and apparatus for demodulating wireless signals modulated by phase-shift keying. The method involves obtaining samples, converting them to frequency domain samples, and identifying symbols based on decision variables. The patent includes a detailed claim outlining the specific steps involved in the process. GlobalData’s report on u-blox gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on u-blox, Perimeter security was a key innovation area identified from patents. u-blox's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Demodulating wireless signal modulated by phase-shift keying
A recently granted patent (Publication Number: US11888661B2) discloses a method and system for demodulating a wireless signal modulated by phase-shift keying. The method involves obtaining sequences of samples from the wireless signal, converting them to frequency domain samples, and selecting decision variables based on maximum magnitudes to identify symbols or symbol-transitions. By comparing these decision variables with reference variables, the system can accurately demodulate the signal. The patent also covers a computer program and demodulator hardware implementing this method, suitable for applications like global navigation satellite systems or wearable devices.
The patent details the process of demodulating wireless signals using complex samples from correlation operations, frequency-locked loops for signal tracking, and discrete Fourier transforms for frequency domain conversion. The demodulator system includes blocks for sample reversal, selection, and decision-making, ensuring efficient symbol identification. Additionally, the system can be implemented in various devices, from global navigation satellite system receivers to wearable technology, showcasing its versatility and potential applications in different industries. Overall, the patent provides a comprehensive solution for demodulating phase-shift keying modulated signals with high accuracy and reliability, catering to the growing demand for efficient wireless communication systems in modern technology.
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