US 8891347

US patent 8891347, titled "User-focusing technique for wireless communication systems," was invented by Xuefeng Yin. The patent was filed on July 28, 2011, and issued on November 18, 2014. The original assignee was Empire Technology Development LLC, and the current assignee is Cobblestone Wireless LLC.

The abstract describes systems and methods for wireless communication involving a transmitter, a receiver, and multiple propagation paths. The method includes transmitting a first signal from the transmitter to the receiver, receiving it, and performing channel estimation to obtain path parameter information. This information is then sent back to the transmitter. The transmitter uses this path parameter information to predistort a second signal, which is then transmitted to and received by the receiver.

Here is a plain-language overview of each independent claim:

• Independent Claim 1 (Method): This claim describes a method where a first signal is sent from a transmitter to a receiver via a propagation path. The receiver analyzes this signal to determine characteristics of the path (path parameter information) and sends this information back to the transmitter. The transmitter then modifies (predistorts) a second signal in terms of time, frequency, and space, based on the received path information, before transmitting it to the receiver. The receiver then receives this predistorted second signal.

• Independent Claim 8 (System): This claim outlines a wireless communication system comprising a receiver, a transmitter, and multiple propagation paths between them. The receiver is designed to get a first signal from the transmitter, estimate the path parameters from it, and send that information to the transmitter. The transmitter is configured to predistort a second signal in time, frequency, and spatial domains using the received path parameter information, and then transmit this predistorted signal to the receiver.

• Independent Claim 15 (Base Station): This claim details a base station used for wireless communication with a receiver in a wireless device. The base station includes a transmitter, a computing device, and a computer-readable storage medium. The computing device executes instructions to transmit a first signal to the receiver, receive channel estimation data (including path parameter information) from the receiver, predistort a second signal in the time, frequency, and spatial domains based on this estimation, and then transmit the predistorted second signal to the receiver.

No specific dockets for US8891347 were found in the CAFC 2026 dockets during the search. The provided patent information does indicate various district court and PTAB litigation cases related to the patent.