Space Exploration Technologies has been granted a patent for a configurable modem designed for satellites, user terminals, and gateways. The modem utilizes an orthogonal frequency division multiplexing (OFDM) protocol to generate RF signals, incorporating various data types within radio frames for efficient communication. GlobalData’s report on Space Exploration Technologies 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 Space Exploration Technologies, V2V communication antennas was a key innovation area identified from patents. Space Exploration Technologies's grant share as of June 2024 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
Configurable modem for satellite communication using ofdm protocol
The patent US12003350B1 describes a modem designed for transmitting waveforms from a user terminal (UT) to a satellite (SAT). The modem includes a transmitter that generates a transmission waveform comprising several components: a unique word, a channel estimation symbol, and multiple pilot subcarriers at different frequencies. These elements are organized within a burst of a radio frame, with specific configurations for pilot sub-band offsets and a resource block containing user data. The modem is capable of operating at a sampling rate of either 62.5 MHz or 125 MHz and incorporates features for pre-compensation to address carrier frequency offsets (CFO) and sampling frequency offsets (SFO), which may arise from satellite movement or oscillator differences. Additionally, the modem includes crest factor reduction and digital pre-distortion blocks to enhance signal quality and efficiency.
The patent also outlines a method for generating the transmission waveform, detailing the insertion of various symbols and offsets within the radio frame. The transmission waveform can be modulated based on data received from the SAT and is designed to allow for the combination of multiple transmission waveforms from different UTs over an air interface. The modem on the SAT is equipped to receive these waveforms, extract channel estimation symbols, and perform phase linear interpolation to correct for delays. This system is structured to support multiple user terminals, with each burst potentially containing data from one to four different UTs, ensuring efficient communication in satellite-based networks.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
