公开(公告)号：US20120105277A1

公开(公告)日：2012-05-03

申请号：US13098314

申请日：2011-04-29

Applicant: Curtis Ling ,  Anand Anandakumar

Inventor： Curtis Ling ,  Anand Anandakumar

IPC: G01S19/00

CPC classification number: G01S19/05 ,  G01S19/256 ,  G01S19/31 ,  G01S19/34

Abstract: Systems and methods for extracting synchronization information from ambient signals, such as broadcast television signals, and using the synchronization information as a reference for correcting the local time base so that a GNSS positioning receiver system maintains relative time base accuracy with respect to a GNSS time.

Abstract translation: 从诸如广播电视信号的环境信号中提取同步信息的系统和方法，以及使用同步信息作为校正本地时基的参考，以使得GNSS定位接收机系统相对于GNSS时间维持相对的时基精度。

公开(公告)号：US20120001797A1

公开(公告)日：2012-01-05

申请号：US12980202

申请日：2010-12-28

Applicant: Curtis Ling

Inventor： Curtis Ling

IPC: G01S19/05

CPC classification number: H04L7/0079 ,  G01S19/05 ,  G01S19/235 ,  G01S19/246 ,  H04B1/707

Abstract: A GNSS receiver communicates with any connectivity device, such as a WiFi device that is, in turn, in communication with a wired network having access to the DTI timing. Such connectivity devices may set their timing and frame synchronization to the DTI and thus serve as Geopositiong beacons, thereby enabling the GNSS receiver to accurately determine its position. The GNSS receiver may also use the DTI timing supplied by such a network to perform relatively long integration time so as to achieve substantially improved sensitivity that is necessary for indoor Geopositioning applications. Furthermore, the GNSS data, such as satellite orbital information, may also be propagated by such devices at high speed. By providing this data to the GNSS receivers via such connectivity devices in a rapid fashion, the GNSS receivers are enabled to receive the transmitted data associated with the satellite without waiting for the GNSS transmission from the satellites.

Abstract translation: GNSS接收器与任何连接设备进行通信，诸如与具有访问DTI定时的有线网络通信的WiFi设备。 这样的连接设备可以将它们的定时和帧同步设置为DTI，从而用作Geopositiong信标，从而使GNSS接收机能够准确地确定其位置。 GNSS接收机还可以使用由这种网络提供的DTI定时来执行相对较长的积分时间，以便实现对于室内地理定位应用所需的显着提高的灵敏度。 此外，诸如卫星轨道信息的GNSS数据也可以由这些设备以高速传播。 通过以快速方式通过这种连接装置向GNSS接收机提供该数据，GNSS接收机能够接收与卫星相关联的发射数据，而不用等待来自卫星的GNSS传输。

公开(公告)号：US20110280349A1

公开(公告)日：2011-11-17

申请号：US12947667

申请日：2010-11-16

Applicant: Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L7/00 ,  H04L27/06

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L7/0016 ,  H04L25/0216 ,  H04L27/265 ,  H04L27/2665 ,  H04L27/2671 ,  H04L27/2695

Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

Abstract translation: 描述了用于调整诸如OFDM系统的通信系统中的定时的系统和方法。 在一个实现中，产生误差信号以调整可变速率内插器的定时，以便调整FFT定时。 误差信号可以基于在通道的脉冲响应的估计中检测到有效峰值，其中峰值位置在随后的符号上被跟踪，并且响应于峰值的变化来调整系统时序。

公开(公告)号：US08010070B2

公开(公告)日：2011-08-30

申请号：US12247908

申请日：2008-10-08

Applicant: Anand K. Anandakumar ,  Curtis Ling ,  Sugbong Kang

Inventor： Anand K. Anandakumar ,  Curtis Ling ,  Sugbong Kang

IPC: H04B1/16

CPC classification number: H04B7/0857

Abstract: A wireless diversity receiver includes, in part, N signal processing paths, a bin-wise combiner, and an inverse transformation module. Each signal processing path includes, in part, a mixer adapted to downconvert a frequency of an RF signal received by that path, an analog-to-digital converter adapted to convert the downconverted signal from an analog signal to a digital signal, and a transformation block adapted to transform the digital signal represented in time domain to an associated frequency domain signal having M subband signals. The bin-wise combiner is configured to combine the corresponding subband signals of the N paths. The inverse transformation block is configured to transform the output of the bin-wise combiner to an associated time-domain signal.

Abstract translation: 无线分集接收机部分地包括N个信号处理路径，二进制组合器和逆变换模块。 每个信号处理路径部分地包括适于将由该路径接收的RF信号的频率下变频的混频器，适于将下变频信号从模拟信号转换为数字信号的模拟 - 数字转换器，以及转换 块，适于将在时域中表示的数字信号变换为具有M个子带信号的相关联的频域信号。 二进制组合器被配置为组合N个路径的相应子带信号。 逆变换块被配置为将二进制组合器的输出变换为相关联的时域信号。

公开(公告)号：US20110169697A1

公开(公告)日：2011-07-14

申请号：US12839362

申请日：2010-07-19

Applicant: Curtis Ling ,  Stuart Strickland

Inventor： Curtis Ling ,  Stuart Strickland

IPC: G01S5/02

CPC classification number: G01C21/20 ,  G01S5/0045 ,  G01S5/0236 ,  G01S5/10 ,  G01S19/48

Abstract: A mobile communication device includes, in part, a first wireless receiver adapted to determine, as it travels along a path, a multitude of positions of the mobile communication device using signals received from a primary positioning source, a second wireless receiver adapted to receive signals from one or more ambient wireless sources as the mobile communication device travels along the path, and a positioning module. An internal or external memory stores estimated positions and corresponding time references of the signals of the one or more ambient sources. The positioning module uses the data stored in the database to estimate the position of the mobile communication device when no primary positioning source signal is available. The positioning module optionally uses the data stored in the database to improve estimates of the position of the mobile communication device when primary positioning signal is available.

Abstract translation: 移动通信设备部分地包括第一无线接收机，其适于在使用从主定位源接收的信号时确定移动通信设备的多个位置，第二无线接收机适于接收信号 当移动通信设备沿着路径行进时，来自一个或多个环境无线源，以及定位模块。 内部或外部存储器存储一个或多个环境源的信号的估计位置和对应的时间基准。 当没有主定位源信号可用时，定位模块使用存储在数据库中的数据来估计移动通信设备的位置。 定位模块可选地使用存储在数据库中的数据来改善当主定位信号可用时移动通信设备的位置的估计。

公开(公告)号：US20100296567A1

公开(公告)日：2010-11-25

申请号：US12799378

申请日：2010-04-23

Applicant: James Qiu ,  Sridhar Ramesh ,  Sheng Ye ,  Curtis Ling

Inventor： James Qiu ,  Sridhar Ramesh ,  Sheng Ye ,  Curtis Ling

IPC: H04L27/06 ,  H04B17/00

CPC classification number: H04W52/0245 ,  H03G3/20 ,  H04B1/109 ,  H04B17/00 ,  H04L1/20 ,  H04L27/06 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/40

Abstract: A communication receiver which applies signal processing for quantitatively estimating receive signal factors such as communication channel quality, signal characteristics, and overall system received bit error rate (BER) or packet error rate (PER) and which applies a general algorithm for mapping these estimated factors to control receiver performance and minimize power consumption.

Abstract translation: 一种通信接收机，其应用信号处理，用于定量估计诸如通信信道质量，信号特征和总体系统接收误比特率（BER）或分组差错率（PER）的接收信号因子，并且其应用用于映射这些估计因子的通用算法 以控制接收机性能并降低功耗。

公开(公告)号：US20090088120A1

公开(公告)日：2009-04-02

申请号：US12240734

申请日：2008-09-29

Applicant: Curtis Ling ,  Shuang Yu

Inventor： Curtis Ling ,  Shuang Yu

IPC: H04B1/16

CPC classification number: H04L27/0014 ,  H04B1/30

Abstract: A receiver includes a static I/Q calibration block and a correlation/integration block. The static I/Q calibration block is configured to substantially eliminate mismatches between in-phase and quadrature components of a portion of the spectrum having associated I/Q mismatches that are relatively frequency-independent. The correlation/integration block is configured to substantially eliminate mismatches between the in-phase and quadrature components of portions of the spectrum having associated I/Q mismatches that are relatively frequency-dependent in accordance with a pair of signals generated by the static I/C calibration block.

Abstract translation: 接收机包括静态I / Q校准块和相关/积分块。 静态I / Q校准块被配置为基本上消除具有相对频率无关的相关联的I / Q失配的频谱的一部分的同相和正交分量之间的失配。 相关/积分块被配置为基本上消除具有相关的I / Q失配的频谱部分的相位和正交分量之间的不匹配，这些失配与根据由静态I / C产生的一对信号相对地依赖于频率 校准块。

公开(公告)号：US20080204143A1

公开(公告)日：2008-08-28

申请号：US12040754

申请日：2008-02-29

Applicant: Raymond Montemayor ,  Curtis Ling

Inventor： Raymond Montemayor ,  Curtis Ling

IPC: H03G3/10

CPC classification number: H03G3/3052

Abstract: Linear wide dynamic range variable gain amplifiers can be configured using a variable gain amplifier having an abbreviated gain control range in combination with a discrete attenuator controlled to select an attenuation from a predetermined set of attenuation values. The variable gain amplifier is configured to provide substantially linear gain control over the abbreviated gain control range, where the abbreviated gain control range is less than a total desired gain control range. The difference between adjacent attenuation values in the set of attenuation values is configured to be approximately less than or equal to the abbreviated gain control range.

Abstract translation: 线性宽动态范围可变增益放大器可以使用具有缩写增益控制范围的可变增益放大器与被控制为从预定衰减值集合中选择衰减的离散衰减器组合来配置。 可变增益放大器被配置为在缩写增益控制范围上提供基本线性增益控制，其中缩写增益控制范围小于总期望增益控制范围。 该组衰减值中的相邻衰减值之间的差被配置为近似小于或等于缩写增益控制范围。

公开(公告)号：US20060078069A1

公开(公告)日：2006-04-13

申请号：US11248643

申请日：2005-10-12

Applicant: Kishore Seendripu ,  Raymond Montemayor ,  Sheng Ye ,  Glenn Chang ,  Curtis Ling

Inventor： Kishore Seendripu ,  Raymond Montemayor ,  Sheng Ye ,  Glenn Chang ,  Curtis Ling

IPC: H04L27/06

CPC classification number: H04B1/28 ,  H03D7/166

Abstract: A receiver configured to selectively receive an RF signal from an operating band having a plurality of RF channels. The receiver is configured to upconvert the desired RF channel to an intermediate frequency (IF) greater than the RF channel frequencies. The upconverted RF channel is downconverted to baseband or a low IF. The receiver can perform channel selection by filtering the baseband or low IF signal. The baseband or low IF signal can be upconverted to a programmable output IF.

Abstract translation: 一种被配置为从具有多个RF信道的工作频带有选择地接收RF信号的接收机。 接收机被配置为将期望的RF信道上变频到大于RF信道频率的中频（IF）。 上变频的RF信道被下变频到基带或低IF。 接收机可以通过对基带或低IF信号进行滤波来执行信道选择。 基带或低IF信号可以上变频到可编程输出IF。