公开(公告)号：US20240089148A1

公开(公告)日：2024-03-14

申请号：US18389001

申请日：2023-11-13

Applicant: Texas Instruments Incorporated

Inventor： Yaron ALPERT ,  Matan BEN-SHACHAR ,  Anand Ganesh DABAK

IPC: H04L25/02 ,  H04B7/06 ,  H04L27/26

CPC classification number: H04L25/0202 ,  H04B7/0626 ,  H04L27/2601 ,  H04W84/12

Abstract: A user client device with a single receive (RX) chain, a first antenna and a second antenna, and a processor that causes the user client device to couple the single RX chain to the first antenna to receive a first data packet on a first channel and determine a first channel state information (CSI) tile of the first channel based on one or more fields in the first data packet, decouple the first antenna from the single RX chain and couple the second antenna to the single RX chain to continue receiving the first data packet on a second channel, determine a second CSI tile of the second channel based on one or more of a portion of the first plurality of fields, aggregate the first CSI tile with the second CSI tile, and generate a CSI matrix based on aggregating the first CSI tile with the second CSI tile.

公开(公告)号：US20180351613A9

公开(公告)日：2018-12-06

申请号：US13765233

申请日：2013-02-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko N. ONGGOSANUSI ,  Badri VARADARAJAN ,  Anand Ganesh DABAK

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04L25/0228 ,  H04L27/2626 ,  H04L27/2647

Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.

公开(公告)号：US20190393935A9

公开(公告)日：2019-12-26

申请号：US13765233

申请日：2013-02-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko N. ONGGOSANUSI ,  Badri VARADARAJAN ,  Anand Ganesh DABAK

IPC: H04B7/04

Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.

公开(公告)号：US20220123964A1

公开(公告)日：2022-04-21

申请号：US17504144

申请日：2021-10-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yaron ALPERT ,  Matan BEN-SHACHAR ,  Anand Ganesh DABAK

IPC: H04L25/02 ,  H04B7/06 ,  H04L27/26

Abstract: A user client device with a single receive (RX) chain, a first antenna and a second antenna, and a processor that causes the user client device to couple the single RX chain to the first antenna to receive a first data packet on a first channel and determine a first channel state information (CSI) tile of the first channel based on one or more fields in the first data packet, decouple the first antenna from the single RX chain and couple the second antenna to the single RX chain to continue receiving the first data packet on a second channel, determine a second CSI tile of the second channel based on one or more of a portion of the first plurality of fields, aggregate the first CSI tile with the second CSI tile, and generate a CSI matrix based on aggregating the first CSI tile with the second CSI tile.

公开(公告)号：US20150222658A1

公开(公告)日：2015-08-06

申请号：US14614038

申请日：2015-02-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Hun-Seok KIM ,  Anand Ganesh DABAK ,  Jing-Fei REN ,  Manish GOEL

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L63/1466 ,  H04K1/003 ,  H04K3/25 ,  H04K3/46 ,  H04K3/65 ,  H04K3/827 ,  H04K3/86 ,  H04K2203/22 ,  H04L9/3271 ,  H04L67/12 ,  H04L2209/805 ,  H04W12/12

Abstract: An apparatus for preventing a relay attack that includes a microcontroller, a receiver, and a transmitter. The receiver is configured to receive a challenge message from a verifier. The challenge message has a challenge message frequency at a first challenge message frequency during a first time slot. The transmitter is configured to transmit a response message to the verifier. The response message has a response message frequency at a first response message frequency during the first time slot. The first response message frequency is different than the first challenge message frequency. The challenge message frequency is at a second challenge message frequency and the response message frequency is at a second response message frequency during a second time slit. The second challenge message frequency is different than the second response message frequency.

Abstract translation: 一种用于防止包括微控制器，接收器和发射器的中继攻击的装置。 接收器被配置为从验证器接收挑战消息。 挑战消息在第一时隙期间在第一挑战消息频率处具有挑战消息频率。 发送器被配置为向验证者发送响应消息。 响应消息在第一时隙期间具有在第一响应消息频率处的响应消息频率。 第一响应消息频率与第一挑战消息频率不同。 挑战消息频率处于第二挑战消息频率，并且响应消息频率在第二时间缝隙期间处于第二响应消息频率。 第二挑战消息频率与第二响应消息频率不同。

公开(公告)号：US20140226739A1

公开(公告)日：2014-08-14

申请号：US13765233

申请日：2013-02-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko N. ONGGOSANUSI ,  Badri VARADARAJAN ,  Anand Ganesh DABAK

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04L25/0228 ,  H04L27/2626 ,  H04L27/2647

Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.

Abstract translation: 本发明提供一种接收机。 在一个实施例中，接收机包括采用来自具有多个天线的发射机的传输信号并且能够提供信道估计的接收部分。 接收机还包括反馈发生器部分，其被配置为向发射机提供基于信道估计的数据传输的预编码器选择，其中预编码器选择对应于频域资源块的分组。 本发明还提供一种具有多个天线的发射机。 在一个实施例中，发射机包括耦合到多个天线的发射部分，并且能够将预编码应用于接收机的数据传输。 发射机还包括反馈解码部分，其被配置为解码从接收机反馈的数据传输的预编码器选择，其中预编码器选择对应于频域资源块的分组。