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公开(公告)号：US20160173391A1
公开(公告)日：2016-06-16
申请号：US15050227
申请日：2016-02-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eko N. Onggosanusi , Anand G. Dabak , Timothy M. Schmidl , Badri Varadarajan
IPC: H04L12/833 , H04W24/08 , H04W8/30 , H04J11/00
CPC classification number: H04L47/2458 , H04B7/0691 , H04B7/0697 , H04B7/0848 , H04B7/0854 , H04B17/336 , H04B17/382 , H04J11/00 , H04L1/0003 , H04L1/0009 , H04L27/2601 , H04W8/30 , H04W24/08
Abstract: A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).
Abstract translation: 公开了发送无线信号的方法（图3A-3C）。 数据流被划分成第一数据流和第二数据流（306）。 第一数据流以第一数据速率被编码（300）。 以与第一数据速率不同的第二数据速率对第二数据流进行编码（320）。 编码的第一数据流的第一部分从第一发射天线（308）传输。 编码的第一数据流的第二部分从第二发射天线（312）传输。
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公开(公告)号：USRE45299E1
公开(公告)日：2014-12-23
申请号：US13867015
申请日：2013-04-19
Applicant: Texas Instruments Incorporated
Inventor： Aris Papasakellariou , Timothy M. Schmidl , Eko N Onggosanusi , Anand Dabak
IPC: H04J11/00
CPC classification number: H04L1/06 , H04B7/0452 , H04B7/12 , H04L5/0007 , H04L5/0048 , H04L25/0226
Abstract: A receiver in an OFDM based communication system is adapted to perform channel estimation using a received reference signal transmitted from at least one antenna The reference signal is substantially located into at least two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A power level of said reference signal is divided into said non-consecutive OFDM symbols in said transmission time interval and adapted to use the reference signal located in a first OFDM symbol in succeeding transmission time intervals in addition to the reference symbols in a current transmission time interval and a preceding transmission time interval.
Abstract translation: 基于OFDM的通信系统中的接收机适于使用从至少一个天线发射的接收的参考信号来执行信道估计。参考信号基本上位于包括多于两个OFDM符号的传输时间间隔的至少两个OFDM符号中。 所述参考信号的功率电平在所述传输时间间隔中被划分为所述非连续OFDM符号，并且适于在当前传输时间中除了参考符号之外，使用位于后续传输时间间隔中的第一OFDM符号中的参考信号 间隔和之前的传输时间间隔。
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公开(公告)号：US10856124B2
公开(公告)日：2020-12-01
申请号：US16039412
申请日：2018-07-19
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
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公开(公告)号：US10057745B2
公开(公告)日：2018-08-21
申请号：US15332138
申请日：2016-10-24
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
CPC classification number: H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
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公开(公告)号：US10034252B2
公开(公告)日：2018-07-24
申请号：US14025628
申请日：2013-09-12
Applicant: Texas Instruments Incorporated
Inventor： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.
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Patent Agency Ranking
公开(公告)号：US20180041862A1
公开(公告)日：2018-02-08
申请号：US15786823
申请日：2017-10-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
CPC classification number: H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
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公开(公告)号：US20170105090A1
公开(公告)日：2017-04-13
申请号：US15332138
申请日：2016-10-24
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
CPC classification number: H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
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公开(公告)号：US20210037491A1
公开(公告)日：2021-02-04
申请号：US17072232
申请日：2020-10-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.
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公开(公告)号：US10292030B2
公开(公告)日：2019-05-14
申请号：US15786823
申请日：2017-10-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
IPC: H04W4/00 , H04W4/80 , H04L27/18 , H04L27/20 , H04L29/06 , H04L27/26 , H04W52/36 , H04W72/04 , H04W74/08
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
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公开(公告)号：USRE46774E1
公开(公告)日：2018-04-03
申请号：US14578322
申请日：2014-12-19
Applicant: Texas Instruments Incorporated
Inventor： Aris Papasakellariou , Timothy M. Schmidl , Eko N Onggosanusi , Anand Dabak
CPC classification number: H04L1/06 , H04B7/0452 , H04B7/12 , H04L5/0007 , H04L5/0048 , H04L25/0226
Abstract: A receiver in an OFDM based communication system is adapted to perform channel estimation using a received reference signal transmitted from at least one antenna The reference signal is substantially located into at least two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A power level of said reference signal is divided into said non-consecutive OFDM symbols in said transmission time interval and adapted to use the reference signal located in a first OFDM symbol in succeeding transmission time intervals in addition to the reference symbols in a current transmission time interval and a preceding transmission time interval.
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