公开(公告)号：US20190334744A1

公开(公告)日：2019-10-31

申请号：US16504633

申请日：2019-07-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Soon PARK ,  Young Jun HONG ,  Sujit JOS ,  Young Soo KIM ,  Chandrashekhar Thejaswi PS ,  Kiran BYNAM ,  Manoj CHOUDHARY

IPC: H04L25/03 ,  H04B1/709 ,  H04L25/49 ,  H04L27/04

Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence. The ternary sequence includes elements of −1, 0, and 1.

公开(公告)号：US20170230145A1

公开(公告)日：2017-08-10

申请号：US15424023

申请日：2017-02-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ashutosh Deepak GORE ,  Sujit JOS ,  Jinesh P. NAIR ,  Chang Soon PARK ,  Kiran BYNAM ,  Young Jun HONG

IPC: H04L1/00 ,  G06F17/15

CPC classification number: H04W52/0229 ,  H04W52/0225 ,  H04W52/0238 ,  H04W52/0245

Abstract: 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.

公开(公告)号：US20170012766A1

公开(公告)日：2017-01-12

申请号：US15204195

申请日：2016-07-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kiran BYNAM ,  Sujit JOS ,  PS Chandrashekhar THEJASWI ,  ChangSoon PARK ,  Jinesh P. NAIR ,  Young-Jun HONG ,  Youngsoo KIM ,  Manoj CHOUDHARY

IPC: H04L7/00 ,  H04L7/04 ,  H04B1/30

CPC classification number: H04L7/0079 ,  H04B1/10 ,  H04B1/30 ,  H04B1/707 ,  H04B1/7183 ,  H04L7/0033 ,  H04L7/033 ,  H04L7/041 ,  H04L25/00 ,  H04L27/0014 ,  H04L27/06 ,  H04L27/063 ,  H04L2027/0028 ,  H04L2027/0067

Abstract: 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.

Abstract translation: 在超再生接收机（SRR）中执行同步的方法包括将SRR的淬灭速率设置为进入信号的码片速率的1.5倍的值，获得多个可能的任意采样集合的预期前导序列 采样集，获取所有可能的样本集合以实现帧同步的预期起始帧定界符（SFD）序列，计算预期SFD序列的比特的相应相关度量，同时为所有可能的样本集获取预期的SFD序列 响应于针对一个或多个可能样本集合检测到的SFD序列，基于所述相关度量来计算决策度量，以及基于所述决定来识别用于解调所有所述可能样本集合中的所述输入信号的最佳样本集合 度量来实现脉冲同步。

公开(公告)号：US20160261359A1

公开(公告)日：2016-09-08

申请号：US15033391

申请日：2014-10-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinesh Parameshwaran NAIR ,  Young Jun HONG ,  Chang Soon PARK ,  Sujit JOS ,  Young Soo KIM ,  Manoj CHOUDHARY

IPC: H04J13/10 ,  H04B1/7097 ,  H04B1/04 ,  H04J13/00 ,  H04L27/04

CPC classification number: H04J13/16 ,  H04B1/0475 ,  H04B1/7097 ,  H04B2201/70707 ,  H04B2201/709709 ,  H04J13/0011 ,  H04J13/0022 ,  H04J13/0044 ,  H04J13/10 ,  H04J13/107 ,  H04L25/4923 ,  H04L27/04

Abstract: 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.

Abstract translation: 本文的实施例实现了用可变扩展因子的二进制字母{0,1}选择非相干扩展序列的方法和系统。 该方法通过循环移位具有元素{1,0}的碱基序列并具有至少一个可变扩展因子来生成扩展序列的循环移位等效集合。 该方法确定循环移位等效集合中的每个扩展序列是否满足预定义的扩展序列标准。 扩展序列标准包括平衡标准，非重复标准，非循环标准和共轭标准。 此外，响应于确定循环移位等效集中的扩展序列满足预定义的扩展序列准则，该方法从来自循环移位等效集的至少一个扩展序列的扩展选择扩展序列。

公开(公告)号：US20140301431A1

公开(公告)日：2014-10-09

申请号：US14293139

申请日：2014-06-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinesh P. NAIR ,  Sujit JOS ,  Preeti NAGVANSHI ,  Arun NANIYAT

IPC: H04B1/7097

CPC classification number: H04B1/7097 ,  H04L5/0017 ,  H04L27/2636 ,  H04L27/2647

Abstract: 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.

Abstract translation: 一种在单载波块传输中的每音调扩展的方法包括生成调制符号块，并对调制符号的块执行每音调扩频。 而且，被配置为在单载波块传输中执行每音调扩频的发射机包括被配置为产生调制符号块的调制器，以及被配置为对已调制码元的块执行每音调扩频的扩展器。

公开(公告)号：US20200323493A1

公开(公告)日：2020-10-15

申请号：US16828364

申请日：2020-03-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Rahul ARORA ,  Sujit JOS ,  Ibrahim ABDUL MAJEED ,  Ka Ram CHOI ,  Sang Kon BAE

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/021 ,  A61B5/145

Abstract: The present disclosure relates to a method and system for processing a photoplethysmogram (PPG) signal to improve accuracy of measurement of physiological parameters of a subject. The method may include removing a baseline drift from the PPG signal; obtaining a drift removed signal; filtering the drift removed signal; obtaining a filtered signal; performing motion artifact correction on the filtered signal; and obtaining a corrected signal.

公开(公告)号：US20170324602A1

公开(公告)日：2017-11-09

申请号：US15487937

申请日：2017-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sujit JOS ,  Kiran BYNAM ,  Jinesh P NAIR ,  Ashutosh Deepak GORE ,  Chandrashekhar Thejaswi PS ,  Chang Soon PARK ,  Young Jun HONG ,  Youngsoo KIM

IPC: H04L27/26 ,  H04L25/02 ,  H04L27/00

CPC classification number: H04L27/2657 ,  H04L25/022 ,  H04L27/0014 ,  H04L2027/0026 ,  H04L2027/003

Abstract: 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.

公开(公告)号：US20170214628A1

公开(公告)日：2017-07-27

申请号：US15412999

申请日：2017-01-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ashutosh Deepak GORE ,  Sujit JOS ,  Jinesh P. NAIR ,  Chang Soon PARK ,  Kiran BYNAM ,  Young Jun HONG

IPC: H04L12/801 ,  H04L12/741

CPC classification number: H04L47/34 ,  H04L45/74

Abstract: 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.

公开(公告)号：US20140198830A1

公开(公告)日：2014-07-17

申请号：US14155583

申请日：2014-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Debarati SEN ,  Jinesh P. NAIR ,  Sujit JOS ,  Arun NANIYAT

IPC: H04L25/02 ,  H04B1/709 ,  H04B1/7073

CPC classification number: H04L25/0206 ,  H04L25/0204 ,  H04L25/0222 ,  H04L25/0224

Abstract: 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.

Abstract translation: 一种在基于子带的超宽带系统中的定时同步的方法包括以子采样速率获得时域中的偏移量的粗略估计，并获得模拟域中的偏移的精细估计。 该方法还包括通过将精细估计转换为用于校正的等效相位来校正模拟域中的定时。

公开(公告)号：US20140023119A1

公开(公告)日：2014-01-23

申请号：US14034178

申请日：2013-09-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sujit JOS ,  Jinesh P. NAIR

IPC: H04B1/709

CPC classification number: H04B1/709 ,  H04J13/12

Abstract: A method of generating a pair of orthogonal sets with a spreading factor N for a direct sequence spread spectrum communication system, includes selecting a two-level autocorrelation sequence of a period of N−1, the two-level autocorrelation sequence including elements, each of which includes a value of 1 or 0, and obtaining binary sequences based on the two-level autocorrelation sequence. The method further includes obtaining quasi-orthogonal sets based on the two-level autocorrelation sequence and the binary sequences, and generating the pair of the orthogonal sets based on the quasi-orthogonal sets.

Abstract translation: 一种用于直接序列扩频通信系统生成具有扩频因子N的正交组对的方法包括：选择N-1周期的两级自相关序列，所述两级自相关序列包括元素， 其包括1或0的值，并且基于两级自相关序列获得二进制序列。 该方法还包括基于二电平自相关序列和二进制序列获得准正交集合，并且基于准正交集合生成正交集合对。