Patents by Inventor Sujit JOS
Sujit JOS 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: 20180048583Abstract: Disclosed is a method and system to transmit independent data by at least two transmitters to corresponding at least two receivers. The method includes obtaining, at a first transmitter, a first ternary sequence from a first base ternary sequence corresponding to a first set of data-symbols, and obtaining, at a second transmitter, a second ternary sequence from a second base ternary sequence corresponding to a second set of data-symbols. The method also includes transmitting, from the first transmitter, the first ternary sequence to a first set of receivers associated with the first transmitter. The method transmits, from the second transmitter, the second ternary sequence to a second set of receivers associated with the second transmitter.Type: ApplicationFiled: October 13, 2016Publication date: February 15, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sujit JOS, Chandrashekhar Thejaswi PS, Chang Soon PARK, Kiran BYNAM, Young Jun HONG
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Patent number: 9887861Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.Type: GrantFiled: October 21, 2014Date of Patent: February 6, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Sujit Jos, Chandrashekhar Thejaswi Ps, Kiran Bynam, Young Jun Hong, Chang Soon Park, Manoj Choudhary
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Patent number: 9887869Abstract: A method to compensate a carrier frequency offset (CFO) in a receiver is disclosed. The method includes receiving discrete time samples, obtaining a sample vector from the received discrete time samples, obtaining tentative CFO estimates based on the sample vector, selecting a CFO having a greatest compensation coefficient from the tentative CFO estimates, and compensating the CFO in the received discrete time samples.Type: GrantFiled: April 14, 2017Date of Patent: February 6, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Sujit Jos, Kiran Bynam, Jinesh P Nair, Ashutosh Deepak Gore, Chandrashekhar Thejaswi Ps, Chang Soon Park, Young Jun Hong, Youngsoo Kim
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Publication number: 20170324602Abstract: A method to compensate a carrier frequency offset (CFO) in a receiver is disclosed. The method includes receiving discrete time samples, obtaining a sample vector from the received discrete time samples, obtaining tentative CFO estimates based on the sample vector, selecting a CFO having a greatest compensation coefficient from the tentative CFO estimates, and compensating the CFO in the received discrete time samples.Type: ApplicationFiled: April 14, 2017Publication date: November 9, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sujit JOS, Kiran BYNAM, Jinesh P NAIR, Ashutosh Deepak GORE, Chandrashekhar Thejaswi PS, Chang Soon PARK, Young Jun HONG, Youngsoo KIM
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Patent number: 9787464Abstract: A method for compensating for a sampling clock-offset includes calculating a positive threshold and a negative threshold of pulse-shaped data symbols to be received, calculating a positive sum ratio and a negative sum ratio from received samples, and compensating for a sampling clock-offset in response to the positive sum ratio being less than or equal to the positive threshold and the negative sum ratio being less than or equal to the negative threshold.Type: GrantFiled: June 3, 2016Date of Patent: October 10, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Sujit Jos, Kiran Bynam, Ashutosh Deepak Gore, Chandrashekhar Thejaswi Ps, Chang Soon Park, Young Jun Hong, Manoj Choudhary
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Patent number: 9769848Abstract: A method and apparatus for a collision-free carrier sense multiple access (CSMA) are provided. The method of a node associated with a beacon enabled carrier sense multiple access (CSMA)-based wireless communication network through an access point (AP) includes receiving a beacon from the AP, the beacon comprising a back-off prime number and a beacon random number, and generating a back-off interval based on the beacon random number, the back-off prime number, a mapped identification (ID) of the node, and a current time slot of a frame of the beacon. The method and apparatus provide a collision-free CSMA scheme for a beacon enabled CSMA-based wireless communication network. In the collision-free CSMA scheme, uniformly distributed back-off intervals may be generated in a distributed fashion at each node for a CSMA-based wireless communication network. The back-off intervals may be correlated among the nodes even though the nodes do not communicate with each other.Type: GrantFiled: August 21, 2015Date of Patent: September 19, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Amar Prakash Azad, Sujit Jos, Sandhya Patil, Kannan Govindan, Kiran Bynam, Manoj Choudhary, Taeseok Kim, Youngsoo Kim
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Publication number: 20170230145Abstract: Disclosed is a method and apparatus to detect an intended packet by a sliding intermediate frequency (SIF) coherent ultra low power (ULP) wireless receiver. The method includes detecting a transition from a noise period to a signal period in a pair of input sequences received, dynamically adjusting a gain of the pair of input sequences in response to the signal period being initiated, distinguishing an intended packet from packets received in preambles included in the pair of input sequences, and compensating for a carrier frequency offset of the intended packet in the signal period.Type: ApplicationFiled: February 3, 2017Publication date: August 10, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Ashutosh Deepak GORE, Sujit JOS, Jinesh P. NAIR, Chang Soon PARK, Kiran BYNAM, Young Jun HONG
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Publication number: 20170214628Abstract: A method to detect a packet includes: receiving an input sequence including preambles; detecting a transition from a noise period to a signal period in the input sequence; dynamically adjusting a gain of the input sequence in response to the signal period being initiated; and distinguishing an intended packet from other packets, among packets received in the preambles.Type: ApplicationFiled: January 23, 2017Publication date: July 27, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Ashutosh Deepak GORE, Sujit JOS, Jinesh P. NAIR, Chang Soon PARK, Kiran BYNAM, Young Jun HONG
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Patent number: 9692588Abstract: A method of performing synchronization in a super regenerative receiver (SRR) includes setting a quench rate of the SRR to a value of 1.5 times a chip rate of an incoming signal, acquiring an expected preamble sequence of an arbitrary sample set among a plurality of possible sample sets, acquiring an expected start frame delimiter (SFD) sequence for all of the possible sample sets to achieve frame synchronization, computing respective correlation metrics for bits of the expected SFD sequence while the expected SFD sequence is acquired for all of the possible sample sets, calculating a decision metric based on the correlation metrics in response to an SFD sequence being detected for one or more of the possible sample sets, and identifying a best sample set for demodulating the incoming signal among all of the possible sample sets based on the decision metric to achieve pulse synchronization.Type: GrantFiled: July 7, 2016Date of Patent: June 27, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Kiran Bynam, Sujit Jos, PS Chandrashekhar Thejaswi, ChangSoon Park, Jinesh P. Nair, Young-Jun Hong, Youngsoo Kim, Manoj Choudhary
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Publication number: 20170063579Abstract: The present invention relates to a method and a device for transmitting a pay load sequence, and provides in one embodiment a transmitter comprising a first signal converter for converting a ternary payload sequence composed of elements ?1, 0, or 1 into a first signal, wherein the first signal converter comprises: a ternary sequence mapper for generating the ternary payload sequence by mapping a pre-designed sequence into a binary data sequence; and a converter for converting the ternary payload sequence into the first signal.Type: ApplicationFiled: October 29, 2014Publication date: March 2, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chang Soon PARK, Young Jun HONG, Sujit JOS, Young Soo KIM, Chandrashekhar Thejaswi PS, Kiran BYNAM, Manoj CHOUDHARY
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Publication number: 20170012766Abstract: A method of performing synchronization in a super regenerative receiver (SRR) includes setting a quench rate of the SRR to a value of 1.5 times a chip rate of an incoming signal, acquiring an expected preamble sequence of an arbitrary sample set among a plurality of possible sample sets, acquiring an expected start frame delimiter (SFD) sequence for all of the possible sample sets to achieve frame synchronization, computing respective correlation metrics for bits of the expected SFD sequence while the expected SFD sequence is acquired for all of the possible sample sets, calculating a decision metric based on the correlation metrics in response to an SFD sequence being detected for one or more of the possible sample sets, and identifying a best sample set for demodulating the incoming signal among all of the possible sample sets based on the decision metric to achieve pulse synchronization.Type: ApplicationFiled: July 7, 2016Publication date: January 12, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Kiran BYNAM, Sujit JOS, PS Chandrashekhar THEJASWI, ChangSoon PARK, Jinesh P. NAIR, Young-Jun HONG, Youngsoo KIM, Manoj CHOUDHARY
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Publication number: 20160359613Abstract: A method for compensating for a sampling clock-offset includes calculating a positive threshold and a negative threshold of pulse-shaped data symbols to be received, calculating a positive sum ratio and a negative sum ratio from received samples, and compensating for a sampling clock-offset in response to the positive sum ratio being less than or equal to the positive threshold and the negative sum ratio being less than or equal to the negative threshold.Type: ApplicationFiled: June 3, 2016Publication date: December 8, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sujit JOS, Kiran BYNAM, Ashutosh Deepak GORE, Chandrashekhar Thejaswi PS, Chang Soon PARK, Young Jun HONG, Manoj CHOUDHARY
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Patent number: 9509367Abstract: A method of per-tone spreading in single carrier block transmissions, includes generating a block of modulated symbols, and performing the per-tone spreading on the block of the modulated symbols. Also, a transmitter configured to perform per-tone spreading in single carrier block transmissions, includes a modulator configured to generate a block of modulated symbols, and a spreader configured to perform the per-tone spreading on the block of the modulated symbols.Type: GrantFiled: June 2, 2014Date of Patent: November 29, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Jinesh P. Nair, Sujit Jos, Preeti Nagvanshi, Arun Naniyat
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Publication number: 20160323056Abstract: A method and device for transmitting a preamble sequence is disclosed. A transmitter according to an embodiment may extract a first sequence for a non-coherent receiver and a second sequence for a coherent receiver, from ternary preamble sequences including elements ?1, 0 and 1, and map the first sequence and the second sequence to a preamble including a plurality of bits to generate a third sequence that the non-coherent receiver and coherent receiver support.Type: ApplicationFiled: October 30, 2014Publication date: November 3, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chang Soon PARK, Young Jun HONG, Jinesh P NAIR, Joon Seong KANG, Young Soo KIM, Sujit JOS, Manoj CHOUDHARY
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Publication number: 20160261359Abstract: Embodiments herein achieve a method and system for selecting non-coherent spreading sequences with binary alphabets {0, 1} with variable spreading factors. The method generates circular shift equivalent sets of spreading sequences by circularly shifting base sequences with elements {1, 0} and having at least one variable spreading factor. The method determines whether each spreading sequence in the circular shift equivalent set meets pre-defined spreading sequence criteria. The spreading sequence criteria comprise balanced criteria, a non-repetition criteria, non-circular criteria, and conjugate criteria. Furthermore, the method selects the spreading sequence from expansions of at least one spreading sequence from the circular shift equivalent sets in response to determining that the spreading sequences in the circular shift equivalent sets meets the pre-defined spreading sequence criteria.Type: ApplicationFiled: October 22, 2014Publication date: September 8, 2016Applicant: Samsung Electronics Co., Ltd.Inventors: Jinesh Parameshwaran NAIR, Young Jun HONG, Chang Soon PARK, Sujit JOS, Young Soo KIM, Manoj CHOUDHARY
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Publication number: 20160261440Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.Type: ApplicationFiled: October 21, 2014Publication date: September 8, 2016Applicant: Samsung Electronics Co., Ltd.Inventors: Sujit JOS, Chandrashekhar Thejaswi PS, Kiran BYNAM, Young Jun HONG, Chang Soon PARK, Manoj CHOUDHARY
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Patent number: 9401740Abstract: A method of a transmitter, includes multiplying a data sequence by a first code, and multiplying a training sequence by a second code that is orthogonal to the first code. The method further includes adding the multiplied data and training sequences, and transmitting, to a receiver, the added data and training sequences.Type: GrantFiled: August 12, 2013Date of Patent: July 26, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Jinesh P. Nair, Sujit Jos
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Publication number: 20160066346Abstract: A method and apparatus for a collision-free carrier sense multiple access (CSMA) are provided. The method of a node associated with a beacon enabled carrier sense multiple access (CSMA)-based wireless communication network through an access point (AP) includes receiving a beacon from the AP, the beacon comprising a back-off prime number and a beacon random number, and generating a back-off interval based on the beacon random number, the back-off prime number, a mapped identification (ID) of the node, and a current time slot of a frame of the beacon. The method and apparatus provide a collision-free CSMA scheme for a beacon enabled CSMA-based wireless communication network. In the collision-free CSMA scheme, uniformly distributed back-off intervals may be generated in a distributed fashion at each node for a CSMA-based wireless communication network. The back-off intervals may be correlated among the nodes even though the nodes do not communicate with each other.Type: ApplicationFiled: August 21, 2015Publication date: March 3, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Amar Prakash AZAD, Sujit JOS, Sandhya PATIL, Kannan GOVINDAN, Kiran BYNAM, Manoj CHOUDHARY, Taeseok KIM, Youngsoo KIM
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Patent number: 9071340Abstract: Provided is a method of generating an orthogonal set in a quasi-synchronous spread spectrum system, the method including selecting a two-level autocorrelation sequence at a sequence selector, selecting a first indices set and a second indices set from the two-level autocorrelation sequence, and generating two quasi-orthogonal sets using the first indices set and the second indices set, at an orthogonal code generator.Type: GrantFiled: September 2, 2014Date of Patent: June 30, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Sujit Jos, Jinesh P Nair
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Method and apparatus for timing synchronization at sub-sampled rate for sub-sampled wideband systems
Patent number: 9054905Abstract: A method of timing synchronization in sub-band based ultra wideband systems, includes obtaining a coarse estimate of an offset in a time domain at a sub-sampled rate, and obtaining a fine estimate of the offset in an analog domain. The method further includes correcting a timing in the analog domain by transforming the fine estimate to an equivalent phase for the correcting.Type: GrantFiled: January 15, 2014Date of Patent: June 9, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Debarati Sen, Jinesh P. Nair, Sujit Jos, Arun Naniyat