公开(公告)号：US20170353934A1

公开(公告)日：2017-12-07

申请号：US15672160

申请日：2017-08-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ANAND GANESH DABAK ,  EKO NUGROHO ONGGOSANUSI ,  BADRI VARADARAJAN

IPC: H04W56/00 ,  H04W36/00 ,  H04B7/26

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.

公开(公告)号：US20180180652A1

公开(公告)日：2018-06-28

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

CPC classification number: G01R27/16 ,  G01R27/14

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.

公开(公告)号：US20160249308A1

公开(公告)日：2016-08-25

申请号：US15144475

申请日：2016-05-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ANAND GANESH DABAK ,  EKO NUGROHO ONGGOSANUSI ,  BADRI VARADARAJAN

IPC: H04W56/00 ,  H04B7/26 ,  H04W36/00

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.

公开(公告)号：US20190342844A1

公开(公告)日：2019-11-07

申请号：US16459201

申请日：2019-07-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ANAND GANESH DABAK ,  EKO NUGROHO ONGGOSANUSI ,  BADRI VARADARAJAN

IPC: H04W56/00 ,  H04W36/00 ,  H04B7/26

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.

公开(公告)号：US20190339386A1

公开(公告)日：2019-11-07

申请号：US16364652

申请日：2019-03-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： LEI DING ,  SRINATH MATHUR RAMASWAMY ,  ANAND GOPALAN ,  VAIBHAV GARG ,  ANAND GANESH DABAK ,  BAHER S. HAROUN

IPC: G01S15/10 ,  G01S15/93 ,  G01S15/58 ,  G01S15/32

Abstract: In an ultrasonic detection system that uses frequency-modulation or phase-modulation coding to distinguish emitted bursts from multiple transducers, a receiver associated with a transducer uses peak search, peak buffer, and peak rank stages in one or more receiver signal processing paths to identify valid received ultrasonic signal envelope peaks in correlator outputs. The peak rank stage can support different modes respectively designed to handle one code, two or more codes, or two or more codes with support for Doppler frequency shift detection. Valid peak information (e.g., amplitude and time) can be reported to a central controller and/or stored locally in a fusion stage to generate more intelligent information for targets or obstacles using peaks from multiple bursts.

公开(公告)号：US20170099109A1

公开(公告)日：2017-04-06

申请号：US14969852

申请日：2015-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： MEHMET ALI DONMEZ ,  ANAND GANESH DABAK ,  IL HAN KIM ,  TIMOTHY MARK SCHMIDL

IPC: H04B10/556 ,  H04L5/00 ,  H04B3/10

CPC classification number: H04B10/556 ,  H04B3/10 ,  H04L5/0048 ,  H04L27/106 ,  H04L27/14

Abstract: An ultrasonic communication circuit is disclosed. The circuit includes an ultrasonic transmitter arranged to transmit a training signal having a frequency to a remote transceiver over an ultrasonic communication channel. An ultrasonic receiver is arranged to receive information from the remote transceiver in response to the training signal. The ultrasonic transmitter is arranged to transmit a data signal to the remote transceiver. The data signal has a duty cycle determined by the information.

公开(公告)号：US20170099114A1

公开(公告)日：2017-04-06

申请号：US14969330

申请日：2015-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： MEHMET ALI DONMEZ ,  ANAND GANESH DABAK ,  IL HAN KIM ,  TIMOTHY MARK SCHMIDL

IPC: H04B11/00

CPC classification number: H04B11/00 ,  H04L27/122 ,  H04L27/144

Abstract: A method of encoding a plurality of data signals is disclosed. The method includes selecting a set of M ultrasonic frequencies, wherein each of the M ultrasonic frequencies differs from an adjacent frequency by at least a first frequency spacing, and wherein M is a positive integer. An encoder receives the plurality of data signals. Each of the plurality of data signals is encoded by a respective set of Q of the M ultrasonic frequencies, wherein Q is a positive integer less than M. A minimum frequency separation between any pair of the Q ultrasonic frequencies of any respective set is greater than the first frequency spacing.

公开(公告)号：US20160029329A1

公开(公告)日：2016-01-28

申请号：US14874330

申请日：2015-10-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ANAND GANESH DABAK ,  EKO NUGROHO ONGGOSANUSI ,  BADRI VARADARAJAN

IPC: H04W56/00 ,  H04B7/26 ,  H04W36/00

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.

公开(公告)号：US20150055624A1

公开(公告)日：2015-02-26

申请号：US14481894

申请日：2014-09-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ANAND GANESH DABAK ,  EKO NUGROHO ONGGOSANUSI ,  BADRI VARADAHARAJAN

IPC: H04W56/00 ,  H04W36/00

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 synchronisation signal and a secondary synchronisation 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。

公开(公告)号：US20140348145A1

公开(公告)日：2014-11-27

申请号：US14458515

申请日：2014-08-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： EKO NUGROHO ONGGOSANUSI ,  ANAND GANESH DABAK

IPC: H04W48/16 ,  H04W36/00 ,  H04W56/00

CPC classification number: H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2655 ,  H04W36/0083 ,  H04W48/16 ,  H04W56/001

Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter or a receiver. In one embodiment, the transmitter is for use with a base station and includes a primary module configured to provide a primary synchronization signal. The transmitter also includes a secondary mapping module configured to provide a secondary synchronization signal derived from two sequences taken from a same set of N sequences and indexed by an index pair (S1, S2) with S1 and S2 ranging from zero to N−1, wherein the index pair (S1, S2) is contained in a mapped set of index pairs corresponding to the same set of N sequences that defines a cell identity group. Additionally, the transmitter further includes a transmit module configured to transmit the primary and secondary synchronization signals.

Abstract translation: 本公开的实施例提供发射机，接收机和操作发射机或接收机的方法。 在一个实施例中，发射机用于与基站一起使用，并且包括被配置为提供主同步信号的主模块。 发射机还包括辅助映射模块，该辅助映射模块被配置为提供从两个序列获得的次同步信号，该两个序列取自相同的N个序列集，并由索引对（S1，S2）索引，其中S1和S2的范围从零到N-1， 其中所述索引对（S1，S2）被包含在对应于定义单元标识组的相同的N个序列集合的映射的索引组集合中。 另外，发射机还包括被配置为发送主要和次要同步信号的发射模块。