Patents by Inventor Timothy A Schmidl
Timothy A Schmidl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230291436Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: ApplicationFiled: May 22, 2023Publication date: September 14, 2023Inventors: Kumaran VIJAYASANKAR, Timothy SCHMIDL, Ramanuja VEDANTHAM
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Patent number: 11700033Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: GrantFiled: May 11, 2021Date of Patent: July 11, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kumaran Vijayasankar, Timothy Schmidl, Ramanuja Vedantham
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Patent number: 11405042Abstract: In described examples, a method of operating a transceiver with a transmitter and a receiver includes generating a frequency reference. In the transmitter: A phase locked loop (PLL) generates a first voltage controlled oscillator (VCO) control voltage responsive to the frequency reference. A VCO in the transmitter generates a transmitter VCO signal responsive to the first VCO control voltage, and the PLL is locked to the transmitter VCO signal. In the receiver: A signal is received. A receiver VCO generates a receiver VCO signal responsive to the first or a second VCO control voltage. The receiver VCO signal is multiplied by the received signal to generate an I component, and by the received signal phase shifted by 90° to generate a Q component. The second VCO control signal is generated responsive to the I component and the Q component.Type: GrantFiled: December 31, 2019Date of Patent: August 2, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Salvatore Luciano Finocchiaro, Timothy Schmidl, Tolga Dinc, Gerd Schuppener, Siraj Akhtar, Swaminathan Sankaran, Baher Haroun
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Publication number: 20210266034Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: ApplicationFiled: May 11, 2021Publication date: August 26, 2021Inventors: Kumaran VIJAYASANKAR, Timothy SCHMIDL, Ramanuja VEDANTHAM
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Publication number: 20210203331Abstract: In described examples, a method of operating a transceiver with a transmitter and a receiver includes generating a frequency reference. In the transmitter: A phase locked loop (PLL) generates a first voltage controlled oscillator (VCO) control voltage responsive to the frequency reference. A VCO in the transmitter generates a transmitter VCO signal responsive to the first VCO control voltage, and the PLL is locked to the transmitter VCO signal. In the receiver: A signal is received. A receiver VCO generates a receiver VCO signal responsive to the first or a second VCO control voltage. The receiver VCO signal is multiplied by the received signal to generate an I component, and by the received signal phase shifted by 90° to generate a Q component. The second VCO control signal is generated responsive to the I component and the Q component.Type: ApplicationFiled: December 31, 2019Publication date: July 1, 2021Inventors: Salvatore Luciano Finocchiaro, Timothy Schmidl, Tolga Dinc, Gerd Schuppener, Siraj Akhtar, Swaminathan Sankaran, Baher Haroun
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Patent number: 11005524Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: GrantFiled: March 10, 2020Date of Patent: May 11, 2021Assignee: Texas Instruments IncorporatedInventors: Kumaran Vijayasankar, Timothy Schmidl, Ramanuja Vedantham
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Publication number: 20200212957Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Inventors: Kumaran VIJAYASANKAR, Timothy SCHMIDL, Ramanuja VEDANTHAM
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Patent number: 10594360Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: GrantFiled: December 29, 2015Date of Patent: March 17, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kumaran Vijayasankar, Timothy Schmidl, Ramanuja Vedantham
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Publication number: 20160344443Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.Type: ApplicationFiled: December 29, 2015Publication date: November 24, 2016Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: KUMARAN VIJAYASANKAR, TIMOTHY SCHMIDL, RAMANUJA VEDANTHAM
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Patent number: 8331215Abstract: This invention is a transmission scheme for multi-ACK/NAK and SRI in TDD. The described scheme enables using DAI as pure counter. QPSK is adopted as the modulation scheme in this invention which guarantees satisfactory detection performance. Link level simulations show that the event of one DL grant pass followed by three consecutive DL grant misses is of low probability.Type: GrantFiled: July 14, 2009Date of Patent: December 11, 2012Assignee: Texas Instruements IncorporatedInventors: Zukang Shen, Tarik Muharemovic, Timothy Schmidl
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Publication number: 20100329194Abstract: This invention is a transmission scheme for multi-ACK/NAK and SRI in TDD. The described scheme enables using DAI as pure counter. QPSK is adopted as the modulation scheme in this invention which guarantees satisfactory detection performance. Link level simulations show that the event of one DL grant pass followed by three consecutive DL grant misses is of low probability.Type: ApplicationFiled: July 14, 2009Publication date: December 30, 2010Applicant: Texas Instruments IncorporatedInventors: Zukang Shen, Tarik Muharemovic, Timothy Schmidl
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Patent number: 7668564Abstract: Embodiments of the invention provide embodiments of the invention provide and method, network entity and user equipment for slow uplink power control of user equipment in a wireless communication system by responding to a long term control metric that is derived from an uplink channel metric over a plurality of transmission instances and a set of performance criteria. A method for slow uplink power control in accordance with and embodiment of the invention measures at least one uplink channel metric for user equipment and then determines an appropriate transmit power for the user equipment by using a control metric derived from the uplink channel metric corresponding to a plurality of transmission instances for the user equipment.Type: GrantFiled: June 20, 2006Date of Patent: February 23, 2010Assignee: Texas Instruments IncorporatedInventors: Eko N. Onggosanusi, Timothy A. Schmidl, Aris Papasakellariou, Anand Dabak
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Patent number: 7660229Abstract: Embodiments of the invention provide method and apparatus for generating a structure in an orthogonal frequency division multiplexing OFDM communication system having a transmitter with one or more transmitting antennas. The method includes composing a frame with a time domain and a frequency domain. The frame has a transmission time interval in the time domain and occupies a bandwidth in the frequency domain. The transmission time interval has multiple orthogonal frequency division multiplexing symbols. A pilot signal is located from a transmitting antenna into two non-consecutive orthogonal frequency division multiplexing symbols of the frame.Type: GrantFiled: June 19, 2006Date of Patent: February 9, 2010Assignee: Texas Instruments IncorporatedInventors: Aris Papasakellariou, Timothy A Schmidl, Eko N Onggosanusi, Anand Dabak
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Patent number: 7565111Abstract: A receiver (MST) for use in a modulated communications system wherein data is communicated in a time-slotted format. The receiver comprises circuitry (22) for providing samples of a group of data from the time-slotted format and circuitry (46, 42) for determining a first set of channel estimates in response to a first set of the samples. The receiver also comprises circuitry (30) for first predicting decisions for data in the group of data in response to the first set of channel estimates and circuitry (46, 42) for determining a second set of channel estimates in response to the predicted decisions. Lastly, the circuitry for predicting is further for second predicting decisions for data in the group of data in response to the second set of channel estimates.Type: GrantFiled: October 18, 2004Date of Patent: July 21, 2009Assignee: Texas Instruments IncorporatedInventors: Eko Onggosanusi, Anand Dabak, Timothy Schmidl
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Publication number: 20080170638Abstract: A wireless communication system (10). The system comprises transmitter circuitry (BST1) comprising circuitry for transmitting a plurality of frames to a receiver in a first cell (Cell 1). Each of the plurality of frames comprises a bit group (22), and the bit group uniquely distinguishes the first cell from a second cell (Cell 2) adjacent the first cell. The transmitter circuitry further comprises circuitry (54) for inserting a bit sequence into the bit group. The bit sequence is selected from a plurality of bit sequences (S1-SK) such that successive transmissions by the transmitter circuitry comprise a cycle of successive ones of the plurality of bit sequences.Type: ApplicationFiled: February 20, 2008Publication date: July 17, 2008Inventors: Timothy Schmidl, Alan Gatherer, Anand G. Dabak
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Patent number: 7369523Abstract: A method described evaluates the pilot-to-data power ratio based on the values of the demodulated data at the output of a receiver such as a conventional maximal ratio combiner or an equalizer receiver. Since the data are not scaled to their particular decision grid, their distribution and statistics deviate from the ones defined by the known decision grid. Measuring these deviations of the statistics, the pilot-to-data power ratio and the appropriate demodulated data scaling can be accurately determined. Subsequent data processing may then commence.Type: GrantFiled: February 20, 2003Date of Patent: May 6, 2008Assignee: Texas Instruments IncorporatedInventors: Aris Papasakellariou, Timothy Schmidl, Anand Dabak
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Publication number: 20080089455Abstract: System and method for interference cancellation in a digital wireless communications system. A preferred embodiment comprises sampling a received signal wherein the received signal is real-valued, rotating the sampled received signal by a specified amount, extracting in-phase and quadrature phase streams from the rotated, sampled received signal, applying an interference suppression filter and combining the filtered streams. The output of the combining operation can be de-correlated (by whitening) if there is excessive correlation.Type: ApplicationFiled: October 31, 2007Publication date: April 17, 2008Inventors: Eko Onggosanusi, Anand Dabak, Timothy Schmidl
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Patent number: 7289570Abstract: A wireless system (e.g., Bluetooth, WCDMA, etc.) with multiple antenna communication channel eigenvector weighted transmissions including possibly differing order symbol constellations for differing eigenvectors. Comparison of maximizations of minimum received symbol distances provides for selection of eigenvector combinations and symbol constellations.Type: GrantFiled: April 10, 2001Date of Patent: October 30, 2007Assignee: Texas Instruments IncorporatedInventors: Timothy Schmidl, Mohammed Nafie, Anand G. Dabak
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Publication number: 20070104151Abstract: Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.Type: ApplicationFiled: October 31, 2006Publication date: May 10, 2007Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Aris Papasakellariou, Timothy Schmidl, Eko Onggosanusi, Anand Dabak
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Publication number: 20070004465Abstract: Embodiments of the invention provide method and structure for boosting pilot signal power relative to data signal power. The velocity of user equipment is obtained. The velocity measurement is used in determining the transmission power of the pilot signal and applying the increase to a plurality of pilots and decreasing the data signal power by a proportional amount.Type: ApplicationFiled: June 29, 2006Publication date: January 4, 2007Inventors: Aris Papasakellariou, Timothy Schmidl, Eko Onggosanusi, Anand Dabak, Tarik Muharemovic