公开(公告)号：US20130287135A1

公开(公告)日：2013-10-31

申请号：US13460498

申请日：2012-04-30

申请人： Hongbing Cheng ,  Soobok Yeo ,  Kwangman Ok ,  Inyup Kang

发明人： Hongbing Cheng ,  Soobok Yeo ,  Kwangman Ok ,  Inyup Kang

IPC分类号： H04B15/00

CPC分类号： H04B17/318 ,  H04B17/345

摘要： A method of operation of a communication system includes: calculating a total received power estimation based on a designated received signal having a designated pilot symbol; calculating an instantaneous channel estimation based on the designated pilot symbol calculating a channel gain power estimation based on the instantaneous channel estimation; calculating a total interference power estimation based on a difference between the instantaneous channel estimation and a delayed channel estimation; calculating a designated received power based on a difference between the total received power estimation and the total interference power estimation; and determining a relative transmission power estimation based on the designated received power and the channel gain power estimation for communicating with a device.

摘要翻译： 一种通信系统的操作方法，包括：基于具有指定导频符号的指定接收信号，计算总接收功率估计; 基于所述指定的导频符号计算基于所述瞬时信道估计的信道增益功率估计的瞬时信道估计; 基于瞬时信道估计和延迟信道估计之间的差计算总干扰功率估计; 基于总接收功率估计与总干扰功率估计之间的差来计算指定接收功率; 以及基于所指定的接收功率和所述信道增益功率估计来确定与设备通信的相对发射功率估计。

公开(公告)号：US20120033767A1

公开(公告)日：2012-02-09

申请号：US13181209

申请日：2011-07-12

申请人： Thomas B. Wilborn ,  Brian C. Banister ,  Sungho Yun ,  Supratik Bhattacharjee ,  Inyup Kang

发明人： Thomas B. Wilborn ,  Brian C. Banister ,  Sungho Yun ,  Supratik Bhattacharjee ,  Inyup Kang

IPC分类号： H04L27/06 ,  H04L27/00

CPC分类号： H04L25/03184 ,  H04L25/067

摘要： A method for quantizing decision metrics (e.g., log likelihood ratios (LLRs)) for reduction of memory requirements in wireless communication is described. The method includes selecting a quantization algorithm. The quantization algorithm may be selected as a function of a characteristic of a decision metric representative of a transport block received over a communication channel, a characteristic of the transport block, or a condition of the communication channel. The method further includes quantizing the decision metric using the selected quantization algorithm to generate at least one quantized decision metric representative of the transport block. The method further includes storing the quantized decision metric and an indicia of the selected quantization algorithm to enable recovery of the decision metric representative of the transport block prior to decoding.

摘要翻译： 描述了用于量化用于减少无线通信中的存储器要求的决策度量（例如，对数似然比（LLR））的方法。 该方法包括选择量化算法。 可以根据表示通过通信信道接收的传输块，传输块的特性或通信信道的条件的决策度量的特性来选择量化算法。 该方法还包括使用所选择的量化算法对决策度量进行量化，以生成表示传输块的至少一个量化决策度量。 该方法还包括存储量化的决策度量和所选量化算法的标记，以使得能够在解码之前恢复表示传输块的决策度量。

公开(公告)号：US07954016B2

公开(公告)日：2011-05-31

申请号：US12717742

申请日：2010-03-04

申请人： Hanfang Pan ,  Inyup Kang ,  James Krysl

发明人： Hanfang Pan ,  Inyup Kang ,  James Krysl

IPC分类号： H03M13/03 ,  G06F11/00 ,  G11C29/00

CPC分类号： H03M13/2764 ,  H03M13/2703

摘要： Embodiments disclosed herein address the need in the art for an efficient multi-symbol deinterleaver. In one aspect, a plurality of memory banks are deployed to receive and simultaneously store a plurality of values, such as soft decision values determined from a modulation constellation, in accordance with a storing pattern. In another aspect, the storing pattern comprises a plurality of cycles, a selected subset of the plurality of memory banks and an address offset for use in determining the address for storing into the respective memory banks indicated for each cycle. In yet another aspect, the stored values may be accessed in order with a sequentially increasing index, such as an address. Various other aspects are also presented. These aspects have the benefit of allowing multiple symbol values to be deinterleaved in an efficient manner, thus meeting computation time constraints, and conserving power.

摘要翻译： 本文公开的实施例解决了本领域对于有效的多符号解交织器的需要。 在一个方面，部署多个存储体以根据存储模式接收并同时存储多个值，诸如从调制星座确定的软判决值。 在另一方面，存储模式包括多个周期，多个存储体的选定子集和用于确定用于存储到为每个周期指示的相应存储体中的地址的地址偏移。 在另一方面，可以按顺序增加的索引（诸如地址）按顺序访问所存储的值。 还提出了各种其他方面。 这些方面具有允许以有效的方式解码多个符号值的好处，从而满足计算时间限制并节省功率。

公开(公告)号：US07649860B2

公开(公告)日：2010-01-19

申请号：US10061874

申请日：2002-01-31

申请人： Inyup Kang ,  Christopher Patrick ,  Bruce R. Meagher ,  Shimman Patel ,  Tao Li ,  Joseph Cheung ,  Pillappakkam Srinivas ,  Gregory B. Foerster ,  Srinivas Varadarajan ,  Jian Wei

发明人： Inyup Kang ,  Christopher Patrick ,  Bruce R. Meagher ,  Shimman Patel ,  Tao Li ,  Joseph Cheung ,  Pillappakkam Srinivas ,  Gregory B. Foerster ,  Srinivas Varadarajan ,  Jian Wei

IPC分类号： H04B7/212

CPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B2201/70709

摘要： A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a “real-time” or “off-line” mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.

摘要翻译： 用于CDMA和GPS信号的导频搜索器。 在一个方面，搜索器与“实时”或“离线”模式中的采样缓冲器结合操作。 可以通过公共端口以TDM方式执行对/从缓冲器的读取/从缓冲器的读取/读取，并且可以在存储在缓冲器中之前对样本进行抽取和打包。 在另一方面，对导频的总体搜索被划分成多个任务，其中每个任务对应于在给定采样段上的搜索，并且基于特定的一组参数值。 任务可以存储在队列中，并根据队列中的顺序一次执行一次。 在执行新任务之前，将该任务的参数值下载到一组配置寄存器。 可以对参数进行排序和链接，以便仅下载新值。

公开(公告)号：US20090082036A1

公开(公告)日：2009-03-26

申请号：US12277104

申请日：2008-11-24

申请人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

发明人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

IPC分类号： H04W64/00

CPC分类号： G01S5/0036 ,  G01S19/235 ,  G01S19/254 ,  G01S19/258 ,  G01S19/30

摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location on a subscriber unit in a terrestrial wireless telephone system using a set of satellites each transmitting a signal, the terrestrial wireless telephone system having base stations, including the steps of transmitting an aiding message from the base station to the subscriber unit, said aiding message containing information regarding a data boundary for each signal from the set of satellites, applying correlation codes to each signal yielding corresponding correlation data and accumulating said correlation data over an first interval preceding a corresponding data boundary yielding a first accumulation result, and a second interval following said corresponding data boundary yielding a second accumulation result.

摘要翻译： 本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。 本发明的一个实施例包括一种用于在陆地无线电话系统中的用户单元上执行位置定位的方法，该方法使用一组发射信号的卫星，具有基站的地面无线电话系统包括以下步骤：从 基站到用户单元，所述辅助消息包含关于来自卫星组的每个信号的数据边界的信息，将相关代码应用于产生相应相关数据的每个信号，并在对应的数据边界之前的第一间隔上累加所述相关数据 产生第一累积结果，并且在所述对应数据边界之后的第二间隔产生第二累积结果。

公开(公告)号：US20080119158A1

公开(公告)日：2008-05-22

申请号：US11562393

申请日：2006-11-21

申请人： Daniel F. Filipovic ,  Inyup Kang

发明人： Daniel F. Filipovic ,  Inyup Kang

IPC分类号： H04B1/10

CPC分类号： H04B15/00 ,  H04B1/109

摘要： In accordance with one aspect of the disclosure, apparatus are provided. A filter is provided to receive from an antenna a receive signal of a given type and a low noise amplifier is provided to amplify the received signal. A translator down translates the receive signal carried at a radio frequency to be carried at an intermediate frequency. An I/Q channel separator is provided to separate the receive signal carried at the intermediate frequency into an analog in-phase (I) signal in an I channel and an analog quadrature-phase (Q) in a Q channel. An analog-to-digital (A/D) converter is provided to respectively convert the I signal and the Q signal to digital domain representations of the I signal and the Q signal. An intermodulation (IM) distortion avoider is provided to avoid IM distortion in the receive signal. The IM distortion avoider includes a carrier frequency exchanger to exchange an IM carrier frequency of IM distortion contained in the receive signal with a carrier frequency of the receive signal.

摘要翻译： 根据本公开的一个方面，提供了装置。 提供了一种滤波器，用于从天线接收给定类型的接收信号，并且提供低噪声放大器以放大所接收的信号。 翻译器向下转换以一个中频传送的射频携带的接收信号。 提供I / Q通道分离器以将在中频载送的接收信号分离为I通道中的模拟同相（I）信号和Q通道中的模拟正交相（Q）。 提供模数（A / D）转换器以分别将I信号和Q信号转换为I信号和Q信号的数字域表示。 提供互调（IM）失真提供者以避免接收信号中的IM失真。 IM失真解除器包括载波频率交换机，用于将接收信号中包含的IM失真的IM载波频率与接收信号的载波频率进行交换。

公开(公告)号：US20070127557A1

公开(公告)日：2007-06-07

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： H04B1/00 ,  H03H7/30

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：US20070110130A1

公开(公告)日：2007-05-17

申请号：US11621145

申请日：2007-01-09

申请人： Inyup Kang ,  Mark Roh ,  Brendon Johnson

发明人： Inyup Kang ,  Mark Roh ,  Brendon Johnson

IPC分类号： H04B1/00

CPC分类号： H04B1/70758 ,  H04B1/70757 ,  H04B1/7117

摘要： In general, the invention facilitates searching for energy peaks in spread spectrum wireless communication systems with greater precision. More particularly, various embodiments of the invention may involve reporting not only an energy peak and its associated offset, but also the energy levels corresponding to one or more offsets occurring before and after the offset at which the energy peak occurs. Interpolation or extrapolation techniques may be used to predict the actual location of an energy peak based on the apparent location of the peak and the energy levels observed at surrounding offsets.

摘要翻译： 通常，本发明有助于以更高的精度搜索扩频无线通信系统中的能量峰值。 更具体地，本发明的各种实施例可以包括不仅报告能量峰值及其相关联的偏移，还报告对应于发生能量峰值的偏移之前和之后发生的一个或多个偏移的能级。 可以使用插值或外插技术来基于峰值的表观位置和在周围偏移处观察到的能量水平来预测能量峰值的实际位置。

公开(公告)号：US20050218871A1

公开(公告)日：2005-10-06

申请号：US10814935

申请日：2004-03-30

申请人： Inyup Kang ,  Karthikeyan Ethirajan ,  Matthew Severson

发明人： Inyup Kang ,  Karthikeyan Ethirajan ,  Matthew Severson

IPC分类号： G05F1/40 ,  G06F1/32

CPC分类号： G05F1/40 ,  G06F1/3203 ,  G06F1/324 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/172

摘要： A method and apparatus for voltage regulation uses, in one aspect, worst-case supply voltages specific to the process split of the integrated device at issue. In another aspect, a two-phase voltage regulation system and method identifies the characterization data pertinent to a family of integrated circuit devices in a first phase, and identifies an associated process split of a candidate integrated circuit device in a second phase. The characterization data from the first phase is then used to provide supply voltages that correspond to target frequencies of operation for the candidate device. In another aspect, a hybrid voltage regulator circuit includes an open loop circuit which automatically identifies the process split of the integrated circuit device and allows a regulator to modify supply voltage based on characterization data specific to that process split, and a closed loop circuit which fine-tunes the supply voltage. In one embodiment, the closed-loop circuit includes a critical path replica for providing estimated frequencies of operation necessary for a critical path in the integrated circuit device. A ring oscillator circuit may be used in one embodiment in the critical path and/or in the open loop circuit.

摘要翻译： 一方面，用于电压调节的方法和装置在一个方面使用特定于所讨论的集成器件的工艺分裂的最坏情况的电源电压。 在另一方面，两相电压调节系统和方法识别与第一阶段中的集成电路器件系列相关的特征数据，并且识别在第二阶段中候选集成电路器件的相关联的工艺分组。 然后使用来自第一阶段的表征数据来提供对应于候选设备的目标操作频率的电源电压。 另一方面，混合电压调节器电路包括开环电路，其自动识别集成电路器件的工艺分离，并且允许调节器基于该工艺分离特有的特性数据修改供电电压，以及闭环电路 调节电源电压。 在一个实施例中，闭环电路包括关键路径副本，用于提供集成电路设备中的关键路径所需的估计工作频率。 在一个实施例中，在关键路径和/或开环电路中可以使用环形振荡器电路。

公开(公告)号：US20050208916A1

公开(公告)日：2005-09-22

申请号：US11131147

申请日：2005-05-16

申请人： Paul Peterzell ,  Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Matthew Severson

发明人： Paul Peterzell ,  Tao Li ,  Christian Holenstein ,  Inyup Kang ,  Matthew Severson

IPC分类号： H03G1/00 ,  H03G3/20 ,  H03G3/30 ,  H04L27/22 ,  H04L27/38 ,  H04B1/06 ,  H04B1/26 ,  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.

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。