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1.发明授权Training sequences and channel estimation method for spread spectrum based systems 有权基于扩频的系统的训练序列和信道估计方法公开(公告)号：US09401740B2
公开(公告)日：2016-07-26
申请号：US13964305
申请日：2013-08-12
发明人： Jinesh P. Nair , Sujit Jos
CPC分类号： H04B1/707 , H03M13/005 , H04J13/004 , H04L1/0003
摘要： 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.
摘要翻译： 一种发射机的方法，包括将数据序列乘以第一码，并将训练序列乘以与第一码正交的第二码。 该方法还包括相加的数据和训练序列的相加，以及向接收机发送所添加的数据和训练序列。
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公开(公告)号：US10091731B2
公开(公告)日：2018-10-02
申请号：US15424023
申请日：2017-02-03
发明人： Ashutosh Deepak Gore , Sujit Jos , Jinesh P. Nair , Chang Soon Park , Kiran Bynam , Young Jun Hong
IPC分类号： H04W52/02
摘要： 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.
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公开(公告)号：US09692588B2
公开(公告)日：2017-06-27
申请号：US15204195
申请日：2016-07-07
发明人： Kiran Bynam , Sujit Jos , PS Chandrashekhar Thejaswi , ChangSoon Park , Jinesh P. Nair , Young-Jun Hong , Youngsoo Kim , Manoj Choudhary
IPC分类号： H04L7/00 , H04L7/04 , H04B1/30 , H04B1/10 , H04L27/06 , H04L27/00 , H04L7/033 , H04B1/707 , H04B1/7183 , H04L25/00
CPC分类号： 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
摘要： 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.
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4.发明授权Method and apparatus for timing synchronization at sub-sampled rate for sub-sampled wideband systems 有权用于子采样宽带系统的子采样速率的定时同步的方法和装置公开(公告)号：US09054905B2
公开(公告)日：2015-06-09
申请号：US14155583
申请日：2014-01-15
发明人： Debarati Sen , Jinesh P. Nair , Sujit Jos , Arun Naniyat
IPC分类号： H04L25/02
CPC分类号： H04L25/0206 , H04L25/0204 , H04L25/0222 , H04L25/0224
摘要： 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.
摘要翻译： 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。
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5.发明授权Method and apparatus for channel mitigation using per-tone spreading in single carrier block transmissions 有权用于在单载波块传输中使用每音调扩展的信道缓解的方法和装置公开(公告)号：US09509367B2
公开(公告)日：2016-11-29
申请号：US14293139
申请日：2014-06-02
发明人： Jinesh P. Nair , Sujit Jos , Preeti Nagvanshi , Arun Naniyat
IPC分类号： H04B1/69 , H04B1/7097 , H04L5/00 , H04L27/26
CPC分类号： H04B1/7097 , H04L5/0017 , H04L27/2636 , H04L27/2647
摘要： 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.
摘要翻译： 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。
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6.发明授权Method and apparatus for generating pair of orthogonal sets with wide range of spreading factors 有权用于产生具有广泛扩展因子的正交集合对的方法和装置公开(公告)号：US08831066B2
公开(公告)日：2014-09-09
申请号：US14034178
申请日：2013-09-23
发明人： Sujit Jos , Jinesh P. Nair
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US10904156B2
公开(公告)日：2021-01-26
申请号：US16666451
申请日：2019-10-29
发明人： Ashutosh Deepak Gore , Sujit Jos , Jinesh P. Nair , Chang Soon Park , Kiran Bynam , Young Jun Hong
IPC分类号： H04L27/26 , H04L12/801 , H04L12/741
摘要： 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.
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公开(公告)号：US10462063B2
公开(公告)日：2019-10-29
申请号：US15412999
申请日：2017-01-23
发明人： Ashutosh Deepak Gore , Sujit Jos , Jinesh P. Nair , Chang Soon Park , Kiran Bynam , Young Jun Hong
IPC分类号： H04L27/26 , H04L12/801 , H04L12/741
摘要： 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.
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公开(公告)号：US09800279B2
公开(公告)日：2017-10-24
申请号：US15044398
申请日：2016-02-16
发明人： Ashutosh Deepak Gore , Jinesh P. Nair , Chang Soon Park , Kiran Bynam , Seok Ju Yun , Young Jun Hong
CPC分类号： H04B1/16 , H03F3/24 , H03G3/00 , H03G3/3036 , H03G3/3068 , H03G3/3078 , H04B2001/0408
摘要： Examples provide a method of performing automatic gain control (AGC) in a wireless receiver, the method including computing, by an energy detection (ED) circuit, a variance in an output signal of an analog-to-digital converter (ADC), and activating, by the ED circuit, an AGC circuit to adjust a gain of at least one component in a radio frequency integrated chip (RFIC) in response to the variance exceeding a threshold. Examples also provide for a wireless receiver that implements such a method.
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公开(公告)号：US09742600B2
公开(公告)日：2017-08-22
申请号：US14840524
申请日：2015-08-31
发明人： Jinesh P. Nair , Ashutosh Deepak Gore , Kiran Bynam , ChangSoon Park , Seokju Yun , Young-Jun Hong , Manoj Choudhary
IPC分类号： H04L25/06
CPC分类号： H04L25/061
摘要： Provided is a method of estimating a Direct Current (DC) offset in an Ultra-Low Power (ULP) receiver. The method includes receiving a signal from an output of an Analog to Digital Converter (ADC) in the ULP receiver. The signal includes a correlated variable DC component for at least one of an in-phase arm and a quadrature arm of the ULP receiver. The method also includes estimating a DC offset compensation parameter in a plurality of phases for a plurality of stages based on the received signal such that the estimating includes calculating the DC offset compensation parameter in a magnitude estimation phase for the plurality of stages and calculating the DC offset compensation parameter in a sign estimation phase for the plurality of stages.
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