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公开(公告)号：US10469146B1
公开(公告)日：2019-11-05
申请号：US16146919
申请日：2018-09-28
发明人： Siavash Ekbatani , Qiang Shen
IPC分类号： H04B7/04 , H04B7/0456 , H04W72/04 , H04B7/06
摘要： Methods, systems, and devices for wireless communications are described. One example includes calculating one or more first channel capacities for each precoder hypothesis of a first subset of precoder hypotheses and selecting a first precoder hypothesis of the first subset of precoder hypotheses using the calculated first channel capacities. The example also includes selecting a second subset of precoder hypotheses based on the first precoder hypothesis, calculating one or more second channel capacities for each precoder hypothesis of the second subset of precoder hypotheses, and selecting a second precoder hypothesis of the second subset of precoder hypotheses using the calculated second channel capacities. The example also includes selecting grouping co-phase factors based at least in part on the first precoder hypothesis or the second precoder hypothesis and transmitting a first precoding matrix indicator that indicates a first precoder index based on the one or more grouping co-phase factors.
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公开(公告)号：US09106321B2
公开(公告)日：2015-08-11
申请号：US14042537
申请日：2013-09-30
发明人： Alok Kumar Gupta , Siavash Ekbatani
IPC分类号： H04B1/00 , H04B1/719 , H04B1/7163
CPC分类号： H04B1/719 , H04B1/71637
摘要： Methods, systems, and devices for maximizing signal to interference plus noise ratio of a channel in a location tracking system. The methods, systems, and device may include tools and techniques for minimizing interference from adjacent samples at a receive filter, may include relaxing constraints at a transmitter. A receive filter or set of receive, or both, filters may be determined and utilized by specifying and or determining various transmitter, receiver, and channel characteristics. The receive filter and set of filters may be determined through an iterative approach involving one or more solution metrics.
摘要翻译： 用于最大化位置跟踪系统中信道的信噪比加噪声比的方法，系统和装置。 方法，系统和设备可以包括用于最小化在接收滤波器处的相邻采样的干扰的工具和技术，可以包括在发射机处的放松约束。 可以通过指定和/或确定各种发射机，接收机和信道特性来确定和利用接收滤波器或接收集合或两者的滤波器。 接收滤波器和滤波器组可以通过涉及一个或多个解决度量的迭代方法来确定。
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公开(公告)号：US20160072545A1
公开(公告)日：2016-03-10
申请号：US14479220
申请日：2014-09-05
发明人： Alok K. Gupta , Siavash Ekbatani
摘要： Described are a system and method for correcting a receiver frequency at a receiver to enhance detection of arrival of a wirelessly transmitted message. In particular, a frequency offset between receiver frequency and a carrier frequency may be estimated based, at least in part, on an autocorrelation of a bit sequence in a received message.
摘要翻译： 描述了一种用于在接收机处校正接收机频率以增强对无线发送消息的到达的检测的系统和方法。 具体地，可以至少部分地基于接收到的消息中的比特序列的自相关来估计接收机频率和载波频率之间的频率偏移。
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4.发明申请UWB PULSE SHAPING FILTERS WITH REDUCED COMPLEXITY AND HIGH SPECTRAL EFFICIENCY 审中-公开具有降低复杂度和高光谱效率的UWB脉冲形状滤波器公开(公告)号：US20150078419A1
公开(公告)日：2015-03-19
申请号：US14201156
申请日：2014-03-07
发明人： Alok Kumar Gupta , Siavash Ekbatani
IPC分类号： H04B1/7163 , H04B1/717
CPC分类号： H04B1/7163 , H04B1/7172 , H04B1/7174
摘要： Methods, systems, and devices are described for maximizing transmit power of an ultra-wideband (UWB) pulse. A spectral mask and a spectral efficiency may be identified. A set of transmit filter coefficients may be generated at a fraction of a carrier frequency. The set of transmit filter coefficients may be based at least in part on the identified spectral mask and spectral efficiency. The UWB pulse may be transmitted with a shape defined at least in part by the set of transmit filter coefficients.
摘要翻译： 描述了用于最大化超宽带（UWB）脉冲的发射功率的方法，系统和设备。 可以识别光谱掩模和光谱效率。 可以以载波频率的一小部分生成一组发射滤波器系数。 发射滤波器系数的集合可以至少部分地基于所识别的频谱掩模和频谱效率。 UWB脉冲可以至少部分地由发射滤波器系数集合定义的形状来传输。
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公开(公告)号：US12107673B2
公开(公告)日：2024-10-01
申请号：US17468281
申请日：2021-09-07
发明人： Peter Shah , Ajay Devadatta Kanetkar , Siavash Ekbatani , Yuanning Yu , Shrenik Patel , Dongjiang Qiao , Rajagopalan Rangarajan
IPC分类号： H04K3/00 , H04B17/318
CPC分类号： H04K3/22 , H04B17/318 , H04K3/45
摘要： Certain aspects of the present disclosure generally relate to jamming detection for radio frequency (RF) front-end circuitry. For example, certain aspects provide an apparatus having a first counter configured to count a number of times that a power of a reception signal exceeds a first threshold. The apparatus also includes a second counter configured to count a number of measurements of the power of the reception signal. The apparatus further includes control logic having a first input coupled to an output of the first counter and having a second input coupled to an output of the second counter. The control logic is configured to determine an amount of jamming over a measurement window based on the number of times that the power of the reception signal exceeds the first threshold and on the number of measurements.
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6.发明公开公开(公告)号：US20240196190A1
公开(公告)日：2024-06-13
申请号：US18063243
申请日：2022-12-08
发明人： Siavash Ekbatani , Qingxin Chen , Yuanning Yu , Paolo Minero , Sandeep Rao , Bo Wen
IPC分类号： H04W8/18
摘要： Methods, systems, and devices for wireless communications are described for low noise amplifier (LNA) configurations of a user equipment (UE) operating in a dual-subscriber dual-active (DSDA) mode. The UE may establish first and second communications links via two or more antenna ports using a first subscriber identity module (SIM) and a second SIM in the DSDA mode. The UE may identify a LNA configuration from two or more available LNA configurations for receiving at least partially concurrent communications of the first SIM and the second SIM based at least in part on activation of the DSDA mode and a difference between a first received signal strength associated with the first SIM and a second received signal strength associated with the second SIM. The UE may receive the at least partially concurrent communications via the two or more antenna ports based at least in part on the identified LNA configuration.
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7.发明申请TERNARY SEQUENCES WITH POWER OF TWO EXPONENT DIMENSIONALITIES SUITABLE FOR CHANNEL ESTIMATION 有权具有适用于信道估计的两个指标尺寸的三次序列公开(公告)号：US20150098345A1
公开(公告)日：2015-04-09
申请号：US14049256
申请日：2013-10-09
发明人： Siavash Ekbatani , Alok Kumar Gupta
CPC分类号： H04L25/024 , G01S5/00 , G01S5/0205 , G01S5/0215 , G01S5/0221 , G01S5/0226 , G01S5/06 , G01S11/08 , G06Q10/00 , G08B21/0272 , H04L25/0226 , H04L25/4923 , H04W64/00
摘要： Methods, systems, and devices for channel estimation in a location tracking system are described. The methods, system, and devices may include tools and techniques for determining and/or designing perfect or semi-perfect sequences (including preamble sequences) for implementation in a location tracking system. Sequences having 2's exponent dimensionality, such as ternary sequences, may be determined and employed, which may help reduce implementation complexity and/or operating power consumption. Sequences may be determined using mean square error and/or maximum autocorrelation peak performance metrics.
摘要翻译： 描述了位置跟踪系统中用于信道估计的方法，系统和设备。 方法，系统和装置可以包括用于确定和/或设计用于在位置跟踪系统中实现的完美或半完美序列（包括前导码序列）的工具和技术。 可以确定并采用具有2个指数维数的序列，例如三进制序列，这有助于降低实现复杂度和/或操作功耗。 序列可以使用均方误差和/或最大自相关峰性能度量来确定。
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8.发明授权Ternary sequences with power of two exponent dimensionalities suitable for channel estimation 有权具有适合于信道估计的两个指数维度的幂的三元序列公开(公告)号：US09338034B2
公开(公告)日：2016-05-10
申请号：US14049256
申请日：2013-10-09
发明人： Siavash Ekbatani , Alok Kumar Gupta
IPC分类号： H04L25/02 , H04L25/49 , G01S5/06 , G01S5/00 , G01S5/02 , G01S11/08 , G06Q10/00 , H04W64/00 , G08B21/02
CPC分类号： H04L25/024 , G01S5/00 , G01S5/0205 , G01S5/0215 , G01S5/0221 , G01S5/0226 , G01S5/06 , G01S11/08 , G06Q10/00 , G08B21/0272 , H04L25/0226 , H04L25/4923 , H04W64/00
摘要： Methods, systems, and devices for channel estimation in a location tracking system are described. The methods, system, and devices may include tools and techniques for determining and/or designing perfect or semi-perfect sequences (including preamble sequences) for implementation in a location tracking system. Sequences having 2's exponent dimensionality, such as ternary sequences, may be determined and employed, which may help reduce implementation complexity and/or operating power consumption. Sequences may be determined using mean square error and/or maximum autocorrelation peak performance metrics.
摘要翻译： 描述了位置跟踪系统中用于信道估计的方法，系统和设备。 方法，系统和装置可以包括用于确定和/或设计用于在位置跟踪系统中实现的完美或半完美序列（包括前导码序列）的工具和技术。 可以确定并采用具有2个指数维数的序列，例如三进制序列，这有助于降低实现复杂度和/或操作功耗。 序列可以使用均方误差和/或最大自相关峰性能度量来确定。
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公开(公告)号：US20150094082A1
公开(公告)日：2015-04-02
申请号：US14042634
申请日：2013-09-30
发明人： Alok Kumar Gupta , Siavash Ekbatani
CPC分类号： H04W64/00 , H04L25/0204 , H04L25/0212 , H04L25/0216 , H04L25/0224 , H04L25/03
摘要： Methods, systems, and devices for channel estimation and/or earliest path detection in a location tracking system are described. The described tools and techniques may involve accumulation of energy of multiple copies of a periodic sequence, which may be contained and/or associated with a signal transmitted from a location tracking tag. One or more access points within the location tracking system may receive and process multiple copies of the sequence, employing period-wise coherent accumulation, and estimate an earliest path, or a corresponding delay associated with an earliest path, of the sequence. The access point(s) may transmit information related to the earliest path, including the corresponding delay, to a tracking management server, which may use the information to estimate and/or determine a location of a tag.
摘要翻译： 描述了位置跟踪系统中用于信道估计和/或最早路径检测的方法，系统和设备。 所描述的工具和技术可以涉及可以包含和/或与从位置跟踪标签发送的信号相关联的周期性序列的多个副本的能量的累积。 位置跟踪系统内的一个或多个接入点可以接收和处理序列的多个副本，采用周期性相干累加，并估计序列的最早路径或与最早路径相关联的对应延迟。 接入点可将与最早路径相关的信息（包括相应的延迟）发送到跟踪管理服务器，跟踪管理服务器可以使用该信息来估计和/或确定标签的位置。
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公开(公告)号：US11490451B2
公开(公告)日：2022-11-01
申请号：US17108767
申请日：2020-12-01
发明人： Siavash Ekbatani
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver device may identify an analog to digital converter (ADC) clipping rate for one or more measurement windows. The receiver device may modify, based at least in part on a determination that the ADC clipping rate does not satisfy a threshold, a low noise amplifier (LNA) gain value to be used by the receiver device. The receiver device may receive a signal using the modified LNA gain value. Numerous other aspects are provided.
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