公开(公告)号：US20110032015A1

公开(公告)日：2011-02-10

申请号：US12793546

申请日：2010-06-03

申请人： Jinxia Bai ,  Linbo Li

发明人： Jinxia Bai ,  Linbo Li

IPC分类号： H03L7/00

CPC分类号： H04L7/0008 ,  G06F1/12 ,  H04L7/0025

摘要： A method, apparatus and system for correcting different clock domains are disclosed. The disclosed implementations correct a second clock domain by making reference to a resampling filter, or similar device, used to correct a first clock domain. The implementations thereby facilitate clock correction using fewer or a different variety of elements.

摘要翻译： 公开了一种用于校正不同时钟域的方法，装置和系统。 所公开的实现通过参考用于校正第一时钟域的重采样滤波器或类似装置来校正第二时钟域。 因此，这些实施方式使用较少或不同种类的元件便于时钟校正。

公开(公告)号：US07873340B2

公开(公告)日：2011-01-18

申请号：US11373369

申请日：2006-03-10

申请人： Linbo Li ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

发明人： Linbo Li ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

IPC分类号： H04B1/06 ,  H04B7/00 ,  H04L27/08

CPC分类号： H03G3/3052 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/294 ,  H03F2200/372 ,  H03G1/0088 ,  H03G3/3068 ,  H04B1/109

摘要： Systems and methods are provided for tracking and compensating for analog gain mismatches or changes in a receiver. In an embodiment, a method is provided to track analog gain step magnitudes during operation of a device. The method includes employing an error signal between an automatic gain control (AGC) output and a reference level as input to a gain step magnitude tracking component. This also includes determining at least one compensation value from the AGC output to update a nominal gain step magnitude that tracks an actual gain step magnitude.

摘要翻译： 提供系统和方法来跟踪和补偿接收机中的模拟增益失配或变化。 在一个实施例中，提供了一种用于在设备操作期间追踪模拟增益步幅的方法。 该方法包括采用自动增益控制（AGC）输出和参考电平之间的误差信号作为增益步长跟踪分量的输入。 这还包括从AGC输出确定至少一个补偿值以更新追踪实际增益步幅的标称增益步幅。

公开(公告)号：US07706288B2

公开(公告)日：2010-04-27

申请号：US11359148

申请日：2006-02-21

申请人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

发明人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

IPC分类号： H04L12/26 ,  H04W4/00 ,  H04W36/00

CPC分类号： H04W48/16

摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.

摘要翻译： 描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。 接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。 在确定被监视的RF信道包括FLO信号之后，接收机可以在第一RF信道和所监视的RF信道之间切换，以便于提供FLO信号的无缝接收，FLO信号可以在RF信道之间超帧同步。 可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

公开(公告)号：US20080020768A1

公开(公告)日：2008-01-24

申请号：US11828333

申请日：2007-07-25

申请人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

发明人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling ,  Raghuraman Krishnamoorthi

IPC分类号： H04Q7/20

CPC分类号： H04W36/28 ,  H04W36/30 ,  H04W72/085

摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.

摘要翻译： 描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。 接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。 在确定被监视的RF信道包括FLO信号之后，接收机可以使用关于当前MLC解码状态的信息在第一RF信道和被监控的RF信道之间切换，以便于提供FLO信号的无缝接收，其可以是超帧 在RF信道之间同步。 可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

公开(公告)号：US08605836B2

公开(公告)日：2013-12-10

申请号：US11373612

申请日：2006-03-09

申请人： Vinay Murthy ,  Linbo Li ,  Raghuraman Krishnamoorthi

发明人： Vinay Murthy ,  Linbo Li ,  Raghuraman Krishnamoorthi

IPC分类号： H04L27/08

CPC分类号： H03G7/007 ,  H03G3/3068 ,  H03G3/3078 ,  H03G3/3089 ,  H04B1/18 ,  H04L27/2601 ,  H04L27/2614 ,  H04L27/2647

摘要： Techniques for performing automatic gain control (AGC) at a wireless receiver are described. The total gain for the wireless receiver is achieved with discrete gain steps for analog circuitry and continuous gain for a digital variable gain amplifier (DVGA). An AGC loop is updated based on power measurements for an output signal from the DVGA. A first gain for the analog circuitry is selected from among multiple discrete gain values based on the AGC loop to maintain the average power of a baseband signal within a predetermined range at an analog-to-digital converter (ADC) input. A second gain for the DVGA is selected based on the AGC loop to maintain the average power of the output signal at a reference power level. The first gain is switched in a manner to avoid saturation of the ADC caused by the baseband signal and to provide switching hysteresis. The AGC may be performed in log domain and with multiple modes.

摘要翻译： 描述了在无线接收机处执行自动增益控制（AGC）的技术。 无线接收机的总增益通过模拟电路的离散增益步长和数字可变增益放大器（DVGA）的连续增益来实现。 基于来自DVGA的输出信号的功率测量来更新AGC环路。 基于AGC环路从多个离散增益值中选择模拟电路的第一增益，以将模拟 - 数字转换器（ADC）输入端的基带信号的平均功率维持在预定范围内。 基于AGC环路选择DVGA的第二增益，以将输出信号的平均功率维持在参考功率电平。 第一增益以避免由基带信号引起的ADC饱和并提供开关滞后的方式进行切换。 AGC可以在对数域和多种模式下执行。

公开(公告)号：US08457064B2

公开(公告)日：2013-06-04

申请号：US12051758

申请日：2008-03-19

申请人： Binita Gupta ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Ashok Mantravadi

发明人： Binita Gupta ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Ashok Mantravadi

IPC分类号： H04W4/00

CPC分类号： H04W36/30 ,  H04W36/0055 ,  H04W72/005

摘要： Methods and apparatus for RF handoff in a multi-frequency network. A method includes generating seamless and partially seamless handoff tables for multiplexes carried in a current LOI, wherein the seamless and partially seamless handoff tables comprise neighboring RF channels carrying one or more of the multiplexes in the current LOI, detecting a handoff event initiated by acquisition failures on a current RF, selecting a selected RF channel from the seamless and partially seamless handoff tables, and performing a handoff to the selected RF channel. An apparatus includes processing logic configured to generate the seamless and partially seamless handoff tables, detect a handoff event initiated by acquisition failures on a current RF, and select a selected RF channel from the seamless and partially seamless handoff tables. The apparatus also includes channel switch logic configured to perform a handoff to the selected RF channel.

摘要翻译： 多频网络中RF切换的方法和装置。 一种方法包括为当前LOI中携带的多路复用产生无缝和部分无缝切换表，其中无缝和部分无缝切换表包括在当前LOI中携带一个或多个多路复用的相邻RF信道，检测由采集失败发起的切换事件 在当前RF上，从无缝和部分无缝切换表中选择所选择的RF信道，以及对所选择的RF信道执行切换。 一种装置包括处理逻辑，其被配置为生成无缝和部分无缝切换表，检测由当前RF获取故障引发的切换事件，以及从无缝和部分无缝切换表中选择所选择的RF信道。 该装置还包括被配置为执行到所选择的RF信道的切换的信道切换逻辑。

公开(公告)号：US07720185B2

公开(公告)日：2010-05-18

申请号：US11557035

申请日：2006-11-06

申请人： Bojan Vrcelj ,  Ashok Mantravadi ,  Fuyun Ling ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Murali Ramaswamy Chari ,  Vinay Murthy

发明人： Bojan Vrcelj ,  Ashok Mantravadi ,  Fuyun Ling ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Murali Ramaswamy Chari ,  Vinay Murthy

IPC分类号： H04B1/10

CPC分类号： H04L25/03044 ,  H04B1/1036 ,  H04B1/109 ,  H04B15/00 ,  H04B2215/061 ,  H04L2025/03477

摘要： The disclosure is directed to a receiver. The receiver includes an interference canceller configured to filter digital samples produced from a modulated signal transmitted over a wireless channel, and a digital variable gain amplifier (DVGA) configured to amplify the filtered digital samples.

摘要翻译： 本公开涉及一种接收机。 接收机包括被配置为对通过无线信道传输的调制信号产生的数字样本进行滤波的干扰消除器，以及被配置成放大经滤波的数字样本的数字可变增益放大器（DVGA）。

公开(公告)号：US20090016380A1

公开(公告)日：2009-01-15

申请号：US12051209

申请日：2008-03-19

申请人： Binita Gupta ,  An Mei Chen ,  Devarshi Shah ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Ashok Mantravadi ,  Taoufik Tani

发明人： Binita Gupta ,  An Mei Chen ,  Devarshi Shah ,  Linbo Li ,  Raghuraman Krishnamoorthi ,  Ashok Mantravadi ,  Taoufik Tani

IPC分类号： H04J1/00

CPC分类号： H04W76/11 ,  H04W48/12 ,  H04W72/02 ,  H04W76/15

摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a multiplex set that comprises one or more content flows, wherein the multiplex set is one of a vertical multiplex (VM) set and a unified multiplex (UM) set, generating an overhead message that associates one or more RF carrier frequencies with the one or more content flows, and transmitting the overhead message over the multi-frequency network. An apparatus includes input logic configured to receive an overhead message that associates one or more content flows with one or more RF carrier frequencies, and processing logic configured to detect a channel switch event that identifies a selected content flow, determine a selected RF carrier frequency associated with the selected content flow based on the overhead message, and switch to the selected RF carrier frequency to receive the selected content flow.

摘要翻译： 多频网络中RF信道切换的方法和装置。 一方面，一种方法包括识别包括一个或多个内容流的多路复用集合，其中多路复用集合是垂直多路复用（VM）集合和统一多路复用（UM）集合之一，生成将开销消息与一个或多个内容流相关联的开销消息， 具有一个或多个内容流的更多RF载波频率，以及通过多频网络发送开销消息。 一种装置包括输入逻辑，其被配置为接收将一个或多个内容流与一个或多个RF载波频率相关联的开销消息，以及被配置为检测识别所选内容流的信道切换事件的处理逻辑，确定所选择的RF载波频率相关联 所选择的内容流程基于开销消息，并且切换到所选择的RF载波频率以接收所选择的内容流。

公开(公告)号：US20070115801A1

公开(公告)日：2007-05-24

申请号：US11521701

申请日：2006-09-15

申请人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling

发明人： Linbo Li ,  Ashok Mantravadi ,  Fuyun Ling

IPC分类号： H04J11/00

CPC分类号： H04B7/0404 ,  H04B7/0805 ,  H04B7/0808 ,  H04B7/0811 ,  H04B7/0814 ,  H04B7/0857 ,  H04B7/0874 ,  H04L1/0003 ,  H04L1/0057 ,  H04L1/0066 ,  H04L25/022 ,  H04L27/2647 ,  H04W72/085

摘要： Systems and methods are provided for enhancing signal quality at receivers in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to independent signal processing paths for the respective antennas where output from the paths is then combined to enhance overall signal quality at the receiver.

摘要翻译： 提供了用于在无线网络中的接收机处提高信号质量的系统和方法。 在一个实施例中，基于诸如接收信号功率或信噪比（SNR）的信号质量参数从天线子集中选择天线。 在另一个实施例中，多个天线被施加到各个天线的独立信号处理路径，其中来自路径的输出然后被组合以增强接收机处的整体信号质量。

公开(公告)号：US20160366691A1

公开(公告)日：2016-12-15

申请号：US15014800

申请日：2016-02-03

申请人： Hyukjoon KWON ,  Sandeep KRISHNAMURTHY ,  Linbo LI ,  Jungwon LEE

发明人： Hyukjoon KWON ,  Sandeep KRISHNAMURTHY ,  Linbo LI ,  Jungwon LEE

IPC分类号： H04W72/04

CPC分类号： H04L27/3405 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/007 ,  H04L5/003 ,  H04L27/18 ,  H04L27/3411 ,  H04W72/0473

摘要： Apparatuses, systems, and methods are described for power allocation in a superposition multiple access communication system capable of using non-uniform joint constellations or super-constellations. In one method, the conditional probability of a correctly-received symbol and a normalized weighting coefficient is calculated for each receiver and then the sum of weighted efficiencies is calculated. The optimal power allocation is determined for each receiver by maximizing the sum of weighted spectral efficiencies.

摘要翻译： 描述了能够使用不均匀联合星座或超星座的叠加多址通信系统中的功率分配的装置，系统和方法。 在一种方法中，针对每个接收机计算正确接收的符号和归一化加权系数的条件概率，然后计算加权效率之和。 通过最大化加权频谱效率之和，为每个接收机确定最佳功率分配。