公开(公告)号：US20200383052A1

公开(公告)日：2020-12-03

申请号：US16428595

申请日：2019-05-31

Applicant: NXP B.V.

Inventor： Jun Zhou ,  Radha Srinivasan ,  Brima Babatunde Ibrahim

IPC: H04W52/02 ,  H04L25/02 ,  H04B1/7163

Abstract: Embodiments of a method and a device are disclosed. In an embodiment, a method for operating an ultra-wideband (UWB) device is disclosed. The method involves powering down a first receive path of a multipath UWB device while leaving a second receive path of the multipath UWB device powered up, powering down channel estimation, tracking, and demodulation functions of the second receive path, and performing an acquisition function using the second receive path while the first receive path is powered down and while the channel estimation, tracking, and demodulation functions of the second receive path are powered down.

公开(公告)号：US10992419B1

公开(公告)日：2021-04-27

申请号：US16816993

申请日：2020-03-12

Applicant: NXP B.V.

Inventor： Jun Zhou ,  Shengyang Xu ,  Abdul Wahid Abdul Kareem ,  Radha Srinivasan ,  Brima Babatunde Ibrahim

IPC: H04B7/04 ,  H04L1/06 ,  H04L27/26 ,  H04B7/0413 ,  H04L5/00 ,  H04L25/02 ,  H04W24/10 ,  H04B7/06 ,  H04W72/04

Abstract: A method and device using a single transmitter (TX) and/or a single receiver (RX) is provided for determining an angle measurement between the transmitter and receiver for an ultra-wideband (UWB) system. A plurality of RX antennas is coupled to the receiver and a plurality of TX antennas is coupled to the transmitter. An IEEE 802.15.4z standard provides a silent period or gap before and after scrambled timestamp sequences (STS) in a frame. An active antenna is switched to a different antenna in the gaps. This allows the angle measurements to be performed with only a single transmitter and receiver within one channel impulse response (CIR) measurement cycle.

公开(公告)号：US11051244B2

公开(公告)日：2021-06-29

申请号：US16428595

申请日：2019-05-31

Applicant: NXP B.V.

Inventor： Jun Zhou ,  Radha Srinivasan ,  Brima Babatunde Ibrahim

IPC: H04W52/02 ,  H04B1/7163 ,  H04L25/02

Abstract: Embodiments of a method and a device are disclosed. In an embodiment, a method for operating an ultra-wideband (UWB) device is disclosed. The method involves powering down a first receive path of a multipath UWB device while leaving a second receive path of the multipath UWB device powered up, powering down channel estimation, tracking, and demodulation functions of the second receive path, and performing an acquisition function using the second receive path while the first receive path is powered down and while the channel estimation, tracking, and demodulation functions of the second receive path are powered down.

公开(公告)号：US10826727B1

公开(公告)日：2020-11-03

申请号：US16581635

申请日：2019-09-24

Applicant: NXP B.V.

Inventor： Jun Zhou ,  Radha Srinivasan ,  Brima Babatunde Ibrahim

IPC: H04L7/04 ,  H04L25/02 ,  H04W24/10

Abstract: Embodiments of a method and a device are disclosed. In an embodiment, a method for operating an impulse radio ultra-wideband (IR-UWB) device is disclosed. The method involves acquiring a signal, integrating one or more synchronization symbols in a synchronization field of the signal to determine an initial channel impulse response (CIR) measurement, and detecting whether a start-of-frame delimiter (SFD) field of the signal is identified during integration. When the SFD field of the signal is identified, the method further involves ceasing integration of the one or more synchronization symbols, scaling the initial CIR measurement, and determining a final CIR measurement based on the scaled CIR measurement. When the SFD field is not identified, the method further involves incrementing a counter configured to count the number of the one or more synchronization symbols integrated, and continuing integration of the one or more synchronization symbols until the SFD field is identified.