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公开(公告)号：US09730171B2
公开(公告)日：2017-08-08
申请号：US15144475
申请日：2016-05-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Ganesh Dabak , Eko Nugroho Onggosanusi , Badri Varadarajan
CPC classification number: H04W56/001 , H04B7/2681 , H04W36/0016 , H04W36/0072
Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal. The transmitter further includes a transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal.
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公开(公告)号：US09197300B2
公开(公告)日：2015-11-24
申请号：US14095470
申请日：2013-12-03
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Ganesh Dabak , Eko Nugroho Onggosanusi
CPC classification number: H04B7/0456 , H04B7/0417 , H04B7/0619 , H04L5/023 , H04L25/0206 , H04L27/2608
Abstract: Various wireless precoding systems and methods are presented. In some embodiments, a wireless transmitter comprises an antenna precoding block, a transform block, and multiple transmit antennas. The antenna precoding block receives frequency coefficients from multiple data streams and distributes the frequency coefficients across multiple transmit signals in accordance with frequency-dependent matrices. The transform block transforms the preceded frequency coefficients into multiple time domain transmit signals to be transmitted by the multiple antennas. The frequency coefficients from multiple data streams may be partitioned into tone groups, and all the frequency coefficients from a given tone group may be redistributed in accordance with a single matrix for that tone group. In some implementations, the frequency coefficients within a tone group for a given data stream may also be precoded. In some alternative embodiments, tone group preceding may be employed in a single channel system.
Abstract translation: 提出了各种无线预编码系统和方法。 在一些实施例中，无线发射机包括天线预编码块，变换块和多个发射天线。 天线预编码块从多个数据流接收频率系数，并根据频率依赖矩阵在多个发射信号之间分配频率系数。 变换块将先前的频率系数转换成多个时域发射信号，由多个天线发送。 来自多个数据流的频率系数可以被划分为音调组，并且来自给定音调组的所有频率系数可以根据该音调组的单个矩阵重新分配。 在一些实现中，给定数据流的音调组内的频率系数也可以被预编码。 在一些替代实施例中，可以在单个信道系统中采用先前的音调组。
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公开(公告)号：US09155056B2
公开(公告)日：2015-10-06
申请号：US14481894
申请日：2014-09-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Ganesh Dabak , Eko Nugroho Onggosanusi , Badri Varadaharajan
CPC classification number: H04W56/001 , H04B7/2681 , H04J11/0069 , H04J2011/0096 , H04L9/12 , H04L2209/80 , H04W36/0016 , H04W56/0015
Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal. The transmitter further includes a transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal.
Abstract translation: 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机包括配置成提供主同步信号和具有第一和第二段的辅同步信号的同步单元。 发射机还包括辅助加扰单元，其被配置为提供加扰的次同步信号，其中第一和第二段的加扰代码从主同步信号的主同步序列导出。 次加扰单元还被配置为提供第一和第二段中的一个的附加加扰，其中从副同步信号的辅同步序列的剩余段导出第二加扰代码。 发射机还包括被配置为发送主同步信号和加扰的次同步信号的发射单元。
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公开(公告)号：US20140355506A1
公开(公告)日：2014-12-04
申请号：US14463422
申请日：2014-08-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy Mark Schmidl , Eko Nugroho Onggosanusi , Anand Ganesh Dabak , Aris Papasakellariou
CPC classification number: H04L5/0044 , H04B1/1615 , H04B7/0413 , H04B7/2656 , H04L5/0007 , H04L5/0048 , H04W52/0229 , Y02D70/1244 , Y02D70/1262 , Y02D70/23 , Y02D70/26 , Y02D70/40 , Y02D70/444 , Y02D70/449
Abstract: A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.
Abstract translation: 公开了一种用于无线收发机（图1和图2）的省电方法。 收发器具有有功功率模式（504）和降低功率模式（510）。 收发器以降低功率模式（510）运行，并且在降低功率模式下监视来自远程无线发射机的传输。 收发器通过包含在传输中的收发信机标识符来识别来自远程无线发射机的传输（图6，UE标识）。 响应于识别传输，收发器转换到有功功率模式（512）。
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公开(公告)号：US20240319313A1
公开(公告)日：2024-09-26
申请号：US18733008
申请日：2024-06-04
Applicant: Texas Instruments Incorporated
Inventor： Borja Martinez Huerta , Guillem Boquet Pujadas , Xavier Vilajosana Guillen , Anand Ganesh Dabak , Kaichien Tsai , Jianwei Zhou , Danil Shalumov
CPC classification number: G01S5/0244 , G01S5/04 , H04W64/00
Abstract: In an example method of target position estimation, the method includes calculating initial estimated positions of a target transmitter. Each of the initial estimated positions is based on an angle of arrival estimate received from a locator. The method includes generating an error projection associated with each of the initial estimated positions. The error projection is based on azimuth and elevation error characteristics of the locator associated with the initial estimated position. The method includes creating a select group of the locators based on overlaps of the error projections, wherein the select group of locators comprises a subset of the locators. The method includes calculating a refined estimate of the position of the target transmitter based on the initial estimated positions associated with the select group of locators.
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Patent Agency Ranking
公开(公告)号：US11933873B2
公开(公告)日：2024-03-19
申请号：US17696338
申请日：2022-03-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yaron Alpert , Matan Ben-Shachar , Anand Ganesh Dabak , Brian Ginsburg
CPC classification number: G01S1/045 , G01S19/254 , G01S19/30
Abstract: One example includes a passive radar receiver system including an RF receiver front-end to receive a wireless source signal and a reflected signal. An antenna switch of the front-end switches a first antenna to a receiver chain during a first time to generate first radar signal data based on a combined wireless signal comprising wireless source signal and the reflected signal, and switches a second antenna to the receiver chain during a second time to generate second radar signal data based on the combined wireless signal. A signal processor generates source signal data associated with the wireless source signal based on the first and second radar signal data and generates reflected signal data associated with the reflected signal based on the first and second radar signal data, and generates target radar data associated with a target based on the source and reflected radar signal data.
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公开(公告)号：US20230141360A1
公开(公告)日：2023-05-11
申请号：US17522732
申请日：2021-11-09
Applicant: Texas Instruments Incorporated
Inventor： Borja Martinez Huerta , Guillem Boquet Pujadas , Xavier Vilajosana Guillen , Anand Ganesh Dabak , Kaichien Tsai , Jianwei Zhou , Danil Shalumov
CPC classification number: G01S5/0244 , H04W64/00 , G01S5/04
Abstract: In an example method of target position estimation, the method includes calculating initial estimated positions of a target transmitter. Each of the initial estimated positions is based on an angle of arrival estimate received from a locator. The method includes generating an error projection associated with each of the initial estimated positions. The error projection is based on azimuth and elevation error characteristics of the locator associated with the initial estimated position. The method includes creating a select group of the locators based on overlaps of the error projections, wherein the select group of locators comprises a subset of the locators. The method includes calculating a refined estimate of the position of the target transmitter based on the initial estimated positions associated with the select group of locators.
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公开(公告)号：US11283563B2
公开(公告)日：2022-03-22
申请号：US14463422
申请日：2014-08-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy Mark Schmidl , Eko Nugroho Onggosanusi , Anand Ganesh Dabak , Aris Papasakellariou
IPC: H04W52/02 , H04L5/00 , H04B1/16 , H04B7/26 , H04B7/0413
Abstract: A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.
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公开(公告)号：US20210111770A1
公开(公告)日：2021-04-15
申请号：US17129493
申请日：2020-12-21
Applicant: Texas Instruments Incorporated
Inventor： Eko N. Onggosanusi , Badri Varadarajan , Anand Ganesh Dabak
IPC: H04B7/0456
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.
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公开(公告)号：US10191097B2
公开(公告)日：2019-01-29
申请号：US15389053
申请日：2016-12-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Charles Kasimer Sestok, IV , Srinath Ramaswamy , Anand Ganesh Dabak , Domingo G. Garcia , Baher Haroun , Alan Henry Leek , Ryan Michael Brown
IPC: G01R27/16
Abstract: A microcontroller-based system for measuring the impedance of a device under test (DUT), responsive to a square wave stimulus, includes parallel stimulus signal paths, selectable by a switch, that can correspond to different stimulus frequency ranges. At least one of the paths includes an off-chip PLL and integer divider circuit to modify the frequency of the stimulus. A discrete Fourier transform executed by a processor is used to determine the impedance of the DUT at the stimulus frequency. Multiple frequencies can be analyzed at the same time by using a summation circuit and/or by analyzing odd harmonics of the stimulus frequency.
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