公开(公告)号：US10931324B1

公开(公告)日：2021-02-23

申请号：US16851792

申请日：2020-04-17

Applicant: Amazon Technologies, Inc.

Inventor： Ravi Ichapurapu ,  Basak Oyman

IPC: H04B17/00 ,  H04B1/16

Abstract: Techniques for a communication device with a receiver to dynamically control the gain of an analog front end of the receiver. Rather than having a single circuit path in the analog front end, the analog front end includes multiple circuit paths, and dynamically selects one of the circuit paths that optimizes the gain of the analog front end. For example, an amplifier circuit path may be selected to amplify the power level of the signal received from the antenna. However, the analog front end may further include an attenuator circuit path that includes an attenuator to reduce the power level of a high-power input signal received from the antenna to ensure that the high-power signal is attenuated below a power level associated with saturation of the receiver.

公开(公告)号：US20240205703A1

公开(公告)日：2024-06-20

申请号：US18081159

申请日：2022-12-14

Applicant: Amazon Technologies, Inc.

Inventor： Muhammed Faruk Gencel ,  Basak Oyman ,  Ravi Ichapurapu

IPC: H04W24/08 ,  H04L1/00 ,  H04L43/0823

CPC classification number: H04W24/08 ,  H04L1/0003 ,  H04L43/0847

Abstract: In various examples, systems and methods of wireless communication link adaptation are described. In some examples, first data may be determined for a first gateway device, the first data representing a plurality of received signal strength (RSS) values of a first signal received from a first end node device. Second data representing an interference associated with the first signal may be determined. At least one of a first packet error rate or a first packet success rate may be determined based at least in part on the first data and the second data. A first modulation coding scheme (MCS) associated with at least one of the first packet error rate or the first packet success rate may be determined. Third data may be sent to the first end node, the third data instructing the first end node device to use the first MCS for communication with the first gateway device.

公开(公告)号：US12002444B1

公开(公告)日：2024-06-04

申请号：US17853006

申请日：2022-06-29

Applicant: Amazon Technologies, Inc.

Inventor： Basak Oyman ,  Kofi Anim-Appiah

IPC: G10K11/16 ,  G10K11/178 ,  G10L25/78

CPC classification number: G10K11/1785 ,  G10L25/78

Abstract: A system that coordinates audio output among multiple devices to perform noise cancellation in one room of noise resulting from audio output of another. The system uses information from the source of the audio output along with calibration information to coordinate the noise cancellation, which may involve delaying of audio output by the aggressor device.

公开(公告)号：US11152966B1

公开(公告)日：2021-10-19

申请号：US16566598

申请日：2019-09-10

Applicant: Amazon Technologies, Inc.

Inventor： Basak Oyman ,  Sai Prashanth Chinnapalli ,  Morris Yuanhsiang Hsu

IPC: H04B1/00 ,  H04B1/10 ,  H04L5/14 ,  H04B1/04 ,  H04B1/16 ,  H04B1/525 ,  H04B1/715 ,  H04B15/00 ,  H04B1/7097 ,  H04B1/719 ,  H04B1/7107 ,  H04J11/00 ,  H04W4/80 ,  H04W84/12 ,  H04B1/62 ,  H04B1/12

Abstract: Technologies directed to digital active interference cancellation (d-AIC) for full duplex transmit-receive (TX-RX) concurrency. An integrated circuit can include first and second analog front-ends (AFE) and digital front-end (DFE) circuits and a digital AIC circuit that generates a scaled and delayed replica of a first quadrature (IQ) sample corresponding to first data transmitted by the first AFE circuit which is being coupled into the receiver as aggressor. The digital AIC circuit receives a second IQ sample from the second AFE circuit, the second IQ sample corresponding to second data being received by the second AFE circuit. The digital AIC circuit subtracts the scaled and delayed replica of the first IQ sample from the second IQ sample to obtain a third IQ sample and sends the third IQ sample to the second DFE circuit. Third IQ sample is the desired signal when d-AIC cancels the self-interference.