公开(公告)号：US10187241B2

公开(公告)日：2019-01-22

申请号：US15958880

申请日：2018-04-20

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L1/02 ,  H04L27/26 ,  H04K3/00 ,  H04B1/40 ,  H04B7/0413

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US20180241604A1

公开(公告)日：2018-08-23

申请号：US15958880

申请日：2018-04-20

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L27/26 ,  H04B1/40 ,  H04B7/0413

CPC classification number: H04L27/2649 ,  H04B1/40 ,  H04B7/0413 ,  H04K3/25 ,  H04K2203/20

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US09973367B2

公开(公告)日：2018-05-15

申请号：US15118432

申请日：2015-02-11

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04B7/02 ,  H04L27/26 ,  H04B1/40 ,  H04B7/0413

CPC classification number: H04L27/2649 ,  H04B1/40 ,  H04B7/0413 ,  H04K3/25 ,  H04K2203/20

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US20170180178A1

公开(公告)日：2017-06-22

申请号：US15118432

申请日：2015-02-11

Applicant: UNIVERSITY OF WASHINGTON

Inventor： SHYAMNATH GOLLAKOTA ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L27/26 ,  H04B7/0413 ,  H04B1/40

CPC classification number: H04L27/2649 ,  H04B1/40 ,  H04B7/0413 ,  H04K3/25 ,  H04K2203/20

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US10587445B2

公开(公告)日：2020-03-10

申请号：US16213913

申请日：2018-12-07

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04B1/40 ,  H04L27/26 ,  H04K3/00 ,  H04B7/0413

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US10270639B2

公开(公告)日：2019-04-23

申请号：US15958880

申请日：2018-04-20

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L1/02 ,  H04L27/26 ,  H04K3/00 ,  H04B1/40 ,  H04B7/0413

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US10547484B2

公开(公告)日：2020-01-28

申请号：US16213913

申请日：2018-12-07

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04B1/40 ,  H04L27/26 ,  H04K3/00 ,  H04B7/0413

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US20190116078A1

公开(公告)日：2019-04-18

申请号：US16213913

申请日：2018-12-07

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L27/26 ,  H04B7/0413 ,  H04K3/00 ,  H04B1/40

CPC classification number: H04L27/2649 ,  H04B1/40 ,  H04B7/0413 ,  H04K3/25 ,  H04K2203/20

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.