公开(公告)号：US06816474B2

公开(公告)日：2004-11-09

申请号：US10366039

申请日：2003-02-13

申请人： Inyup Kang ,  Mark D. Levin ,  Arthur J. Neufeld

发明人： Inyup Kang ,  Mark D. Levin ,  Arthur J. Neufeld

IPC分类号： H04B7216

CPC分类号： H04B7/2668 ,  H04B7/216

摘要： Provided is a system and method for constructing a data message in a communications device including a processor configured to process sequentially transmitted messages. Each of the messages requires a predetermined number of data frames. The technique of the instant invention includes receiving portions of at least two of the transmitted messages in the processor. Each of the at least two received portions includes a subset of the predetermined number of data frames and excludes a remainder of the predetermined number of data frames. The subset of one of the received portions substantially matches the remainder of the other portion. Next, a determination is made as to whether a total number of the received subsets equals the predetermined number. Finally, a synthesized messaged is produced when the total number of the subsets is at least equal to the predetermined number. The synthesized message is formed of a combination of the subsets from each of the received portions.

摘要翻译： 提供了一种用于在通信设备中构建数据消息的系统和方法，该通信设备包括被配置为处理顺序发送的消息的处理器。 每个消息都需要预定数量的数据帧。 本发明的技术包括在处理器中接收至少两个发送消息的部分。 所述至少两个接收部分中的每一个包括预定数量的数据帧的子集，并且排除预定数量的数据帧的剩余部分。 接收部分之一的子集基本上与另一部分的其余部分相匹配。 接下来，确定接收到的子集的总数是否等于预定数。 最后，当子集的总数至少等于预定数量时，产生合成的消息。 合成消息由来自每个接收部分的子集的组合形成。

公开(公告)号：US06480529B1

公开(公告)日：2002-11-12

申请号：US09468556

申请日：1999-12-21

申请人： Gilbert C. Sih ,  Ian Fevrier ,  Inyup Kang ,  Christopher Patrick

发明人： Gilbert C. Sih ,  Ian Fevrier ,  Inyup Kang ,  Christopher Patrick

IPC分类号： H04B1500

CPC分类号： H04B1/7093 ,  G06F17/15 ,  H04B2201/70711

摘要： A novel and improved method and apparatus for searching is described. This searcher combines the ability to search multiple offsets of single pilots, such as those found in the IS-95 system, with the ability to search multiple pilots, such as those found in a GPS location determination system. Both types of searching can be done in a single architecture combining the parallel computation features of a matched filter with the flexibility of allowing a variable number of coherent accumulations and a variable number of non-coherent accumulations to be performed at high speed for a wide range of search hypotheses in a resource efficient manner. This invention allows for parallel use of the matched filter structure in a time-sliced manner to search multiple windows. In addition, the searcher allows for optional independent Walsh decovering for each search window. The time-sharing approach allows for optional frequency searching of any offset.

摘要翻译： 描述了一种新颖的，改进的搜索方法和装置。 该搜索者组合搜索诸如在IS-95系统中发现的单个导频的多个偏移的能力，具有搜索多个导频的能力，例如在GPS位置确定系统中发现的那些。 两种类型的搜索可以在单个架构中完成，该结构将匹配滤波器的并行计算特征与允许可变数量的相干累加的灵活性并且可变数量的非相干累加在高范围内进行宽范围 的资源有效的搜索假设。 本发明允许以时间分割的方式并行使用匹配的滤波器结构来搜索多个窗口。 此外，搜索器允许为每个搜索窗口选择独立的沃尔什解密。 时间分配方法允许任意偏移量的可选频率搜索。

公开(公告)号：US06381728B1

公开(公告)日：2002-04-30

申请号：US09259665

申请日：1999-02-26

申请人： Inyup Kang

发明人： Inyup Kang

IPC分类号： H03M1300

CPC分类号： H03M13/2775 ,  H03M13/2957 ,  H03M13/3972

摘要： The present invention is a novel and improved technique for decoding with particular application to turbo, or iterative, coding techniques. In accordance with one embodiment of the invention a system for decoding includes a channel deinterleaver RAM for storing a block of symbol estimates and for reading out at least three different portions of said block in substantially simultaneous fashion. A set of 3 state metric calculators receives the three portion in a substantially simultanous fashion and generate corresponding sets of state metric calculations from said three portions of the channel deinterleaver block.

摘要翻译： 本发明是一种用于特定应用于turbo或迭代编码技术的解码的新颖和改进的技术。 根据本发明的一个实施例，用于解码的系统包括用于存储符号估计块并用于以基本同时的方式读出所述块的至少三个不同部分的信道去交织器RAM。 一组3个状态度量计算器以基本同时的方式接收三个部分，并从通道解交织器块的所述三个部分产生相应的状态度量计算集合。

公开(公告)号：US08626099B2

公开(公告)日：2014-01-07

申请号：US11376502

申请日：2006-03-14

申请人： Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Brett C. Walker ,  Paul E. Peterzell ,  Raghu Challa ,  Matthew L. Severson ,  Arun Raghupathy ,  Gilbert Christopher Sih

发明人： Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Brett C. Walker ,  Paul E. Peterzell ,  Raghu Challa ,  Matthew L. Severson ,  Arun Raghupathy ,  Gilbert Christopher Sih

IPC分类号： H04B1/06

CPC分类号： H03G3/3078 ,  H03G3/3068 ,  H03G3/3089

摘要： A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus.

摘要翻译： 具有用于去除信号分量的DC偏移的DC环路的直接下变频接收机架构，提供一系列增益的数字可变增益放大器（DVGA），用于为DVGA和RF提供增益控制的自动增益控制（AGC）回路 /模拟电路和串行总线接口（SBI）单元，通过串行总线为RF /模拟电路提供控制。 可以如本文所述有利地设计和定位DVGA。 可以基于DC循环的操作模式来选择VGA循环的操作模式，因为这两个循环彼此相互作用。 在采集模式下，DC环路工作的持续时间可以被选择为与采集模式中的DC环路带宽成反比。 一些或全部RF /模拟电路的控制可以通过串行总线提供。

公开(公告)号：US08615212B2

公开(公告)日：2013-12-24

申请号：US11862330

申请日：2007-09-27

申请人： Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Brett C. Walker ,  Paul E. Peterzell ,  Raghu Challa ,  Matthew L. Severson ,  Arun Raghupathy ,  Gilbert Christopher Sih

发明人： Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Brett C. Walker ,  Paul E. Peterzell ,  Raghu Challa ,  Matthew L. Severson ,  Arun Raghupathy ,  Gilbert Christopher Sih

IPC分类号： H04B7/00

CPC分类号： H03G3/3078 ,  H03G3/3068 ,  H03G3/3089

摘要： A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus.

公开(公告)号：US20120051407A1

公开(公告)日：2012-03-01

申请号：US13033902

申请日：2011-02-24

申请人： Zhu Ji ,  Brian Clarke Banister ,  Inyup Kang

发明人： Zhu Ji ,  Brian Clarke Banister ,  Inyup Kang

IPC分类号： H04W24/00 ,  H04B1/38

CPC分类号： H03H17/0294 ,  H03H17/0642

摘要： Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at least one performance requirement of the transceiver. In particular, the methods and apparatus perform sampling of an input signal at a first sampling rate to gain one or more input signal samples. The input signal samples are then filtered using parallel or polyphase filtering operating at a second sampling rate lower than the first sampling rate. The filtered samples are then interpolated at the second sampling rate to achieve resampling of the input signal. Polyphase filtering affords an effectively high input sampling rate for good spectrum image rejection, while allowing the second sampling rate to be effectively much lower than the first rate, thereby reducing the complexity of multiplier operations for interpolation.

摘要翻译： 公开了无线收发器中采样率转换的方法和装置。 方法和装置通过基于收发器的至少一个性能要求自适应地设置信号的采样速率来实现采样率的敏捷设置或重新采样。 特别地，方法和装置以第一采样率对输入信号进行采样，以获得一个或多个输入信号采样。 然后使用以低于第一采样速率的第二采样率运行的并行或多相滤波来过滤输入信号采样。 然后以第二采样率对经滤波的采样进行内插，以实现输入信号的重新采样。 多相滤波提供了有效的高输入采样率以获得良好的频谱图像抑制，同时允许第二采样率实际上远低于第一速率，从而降低了用于插值的乘法器操作的复杂度。

公开(公告)号：US08064556B2

公开(公告)日：2011-11-22

申请号：US11502178

申请日：2006-08-09

申请人： Parvathanathan Subrahmanya ,  Inyup Kang ,  Jia Fei ,  Rajesh Sundaresan

发明人： Parvathanathan Subrahmanya ,  Inyup Kang ,  Jia Fei ,  Rajesh Sundaresan

IPC分类号： H04B1/10

CPC分类号： H04B1/71057 ,  H04B7/0669 ,  H04B7/0673 ,  H04B7/0845 ,  H04L25/03044 ,  H04L25/03292 ,  H04L2025/03509

摘要： This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is “fractionally spaced,” which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.

摘要翻译： 本公开描述了用于扩频无线通信的均衡技术。 这些技术可以包括基于所估计的信道脉冲响应和所估计的信道方差估计信道脉冲响应，估计信道方差，以及为均衡器选择滤波器系数。 此外，根据本公开，信道方差估计涉及对于不同接收样本的两个或多个协方差的估计。 重要的是，均衡器是“分数间隔”的，这意味着均衡器定义了分数滤波系数（滤波器抽头），不同于传统的均衡器，假设滤波器系数是以整数芯片间隔定义的。 这些技术可以允许均衡器考虑天线分集，例如接收分集，发射分集，或者可能两者。

公开(公告)号：US07991041B2

公开(公告)日：2011-08-02

申请号：US11560060

申请日：2006-11-15

申请人： Byonghyo Shim ,  Farrokh Abrishamkar ,  Inyup Kang

发明人： Byonghyo Shim ,  Farrokh Abrishamkar ,  Inyup Kang

IPC分类号： H04B1/10 ,  H03D1/04

CPC分类号： H04B1/71072 ,  H04B1/71055 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70702

摘要： Techniques for recovering a desired transmission in the presence of interfering transmissions are described. For iterative detection and cancellation, multiple groups of code channels are formed for a plurality of code channels for at least one sector. Processing is performed for the multiple groups of code channels in multiple iterations. For each iteration, data detection and signal cancellation are performed for the multiple groups of code channels in multiple stages, e.g., in a sequential order starting with the strongest group to the weakest group. Each stage of each iteration may perform data detection, signal reconstruction, and signal cancellation. Each stage of each iteration may also perform equalization, data detection, signal reconstruction, and signal cancellation.

摘要翻译： 描述了在存在干扰传输的情况下恢复所需传输的技术。 对于迭代检测和消除，针对至少一个扇区的多个代码信道形成多组代码信道组。 在多个迭代中针对多组代码信道执行处理。 对于每个迭代，对于多个阶段的多组代码信道执行数据检测和信号消除，例如以从最强组到最弱组的顺序顺序执行。 每个迭代的每个阶段都可以执行数据检测，信号重建和信号消除。 每个迭代的每个阶段也可以执行均衡，数据检测，信号重建和信号消除。

公开(公告)号：US07929509B2

公开(公告)日：2011-04-19

申请号：US11126526

申请日：2005-05-10

申请人： Inyup Kang

发明人： Inyup Kang

IPC分类号： H04B7/216

CPC分类号： H04B1/7083 ,  H04B1/70735

摘要： A method and apparatus for reduced acquisition time are disclosed. In one embodiment, such as in a W-CDMA system, a receiver receives one or more signals from remote stations, each signal comprising a scrambling code associated with one of a plurality of code groups, each code group identified by a unique series of a synchronization codes. A searcher identifies a subset of first synchronization codes, and a processor selects one or more hypotheses in response to the received subset. The searcher may then perform searching for a scrambling code in accordance with the one or more hypotheses. The scrambling code search may be performed in parallel with continued synchronization code searching. Various other embodiments are also disclosed.

摘要翻译： 公开了一种缩短采集时间的方法和装置。 在一个实施例中，例如在W-CDMA系统中，接收机从远程站接收一个或多个信号，每个信号包括与多个代码组中的一个相关联的扰码，每个代码组由唯一的一系列 同步码 搜索者识别第一同步码的子集，并且处理器响应于所接收的子集选择一个或多个假设。 然后，搜索者可以根据一个或多个假设执行搜索扰码。 可以与继续的同步码搜索并行地执行扰码搜索。 还公开了各种其它实施例。

公开(公告)号：US20110044380A1

公开(公告)日：2011-02-24

申请号：US12823668

申请日：2010-06-25

申请人： Thomas D. Marra ,  Soon-Seng Lau ,  Inyup Kang ,  Arash Mirbagheri

发明人： Thomas D. Marra ,  Soon-Seng Lau ,  Inyup Kang ,  Arash Mirbagheri

IPC分类号： H04B15/00

CPC分类号： H04B1/525 ,  H03M1/661 ,  H04B1/0475

摘要： A method for interference reduction is described. The method is implemented in a wireless device. It is determined that a page is going to be received via a secondary receiver. It is also determined that a digital-to-analog converter (DAC) image from a transmitter will cause interference with the secondary receiver when the page is received. A sampling frequency of the DAC for the transmitter is changed so that there are not any DAC images from the transmitter that will cause interference with the secondary receiver.

摘要翻译： 描述了一种减少干扰的方法。 该方法在无线设备中实现。 确定将通过次级接收器接收页面。 还确定，当接收到页面时，来自发射器的数模转换器（DAC）图像将引起与次级接收机的干扰。 改变发射机的DAC的采样频率，使得没有来自发射机的任何DAC图像将导致与次要接收机的干扰。