Orange has been granted a patent for a method involving the transmission of pilot symbols between communication devices to estimate transmission channels. The method utilizes active and passive antennas, adjusting impedance levels to control signal backscatter. This innovation aims to enhance communication efficiency and reliability. GlobalData’s report on Orange gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Orange, Audio signal processing was a key innovation area identified from patents. Orange's grant share as of April 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

Method of transmitting pilot symbols for channel estimation

Source: United States Patent and Trademark Office (USPTO). Credit: Orange SA

A recently granted patent (Publication Number: US11973619B2) discloses a method for transmission between communication devices to estimate a transmission channel. The method involves transmitting pilot symbols from a first communication device with an active antenna and passive antennas. The passive antennas are set to different impedances to control the level of signal backscattered, allowing for accurate estimation of the transmission channel. The patent also covers the estimation method implemented by the second communication device, which receives the signals and pilot symbols to estimate the transmission channel between the devices.

Furthermore, the patent includes claims related to the configuration of the first communication device, which is designed to transmit pilot symbols for channel estimation. The device comprises active and passive antennas, with the active antenna transmitting pilot symbols associated with both the active and passive antennas. By controlling the impedance of the passive antennas, the device ensures accurate backscattered signal levels for effective channel estimation. Additionally, the patent extends to a communication system incorporating the described method, where the first device transmits pilot symbols and the second device estimates the transmission channel based on the received signals. This innovative approach to transmission and channel estimation in communication devices showcases advancements in signal processing and antenna technology.

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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.