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    DIGITAL RADIO PROCESSOR ARCHITECTURE WITH REDUCED DCO MODULATION RANGE REQUIREMENT
    3.
    发明申请
    DIGITAL RADIO PROCESSOR ARCHITECTURE WITH REDUCED DCO MODULATION RANGE REQUIREMENT 有权
    具有减少DCO调制范围要求的数字无线电处理器架构

    公开(公告)号：US20090252269A1

    公开(公告)日：2009-10-08

    申请号：US12060886

    申请日：2008-04-02

    申请人： Sarma S. Gunturi ,  Jawaharlal Tangudu ,  Sthanunathan Ramakrishnan ,  Jayawardan Janardhanan ,  Debapriya Sahu ,  Subhashish Mukherjee

    发明人： Sarma S. Gunturi ,  Jawaharlal Tangudu ,  Sthanunathan Ramakrishnan ,  Jayawardan Janardhanan ,  Debapriya Sahu ,  Subhashish Mukherjee

    IPC分类号： H04L7/00

    CPC分类号： H04L27/362 ,  H04L7/0331

    摘要： A method of achieving reduced modulation range requirement in a Digitally Controlled Oscillator (DCO) which is deployed as part of a DRP (Digital Radio Processor) and tuned to a tuning frequency range having operating-channel center-frequencies, wherein phase difference between consecutive samples is termed as FCW (Frequency Control Word), uses the steps of digitally modifying and limiting the FCW so that the FCW does not exceed known FCW thresholds, e.g., chosen from π/2, π/4, π/8, and redistributing the FCWs while maintaining a cumulative sum of phases and without significant EVM (Error Vector Magnitude) degradation. The FCW threshold can be chosen arbitrarily and need not be in the form of π/2n. The method uses a FCW limiting algorithm which reduces supply voltage sensitivity of the DCO and enables significant reduction in area of capacitor bank which would be otherwise needed.

    摘要翻译： 一种在数字控制振荡器（DCO）中实现减少的调制范围要求的方法，其被部署为DRP（数字无线电处理器）的一部分并被调谐到具有操作信道中心频率的调谐频率范围，其中连续样本之间的相位差 被称为FCW（频率控制字），使用数字修改和限制FCW的步骤，使得FCW不超过已知的FCW阈值，例如从pi / 2，pi / 4，pi / 8选择并重新分配 FCW同时保持相位的累积和，并且没有显着的EVM（误差矢量幅度）劣化。 FCW阈值可以任​​意选择，不需要以pi / 2n的形式。 该方法使用FCW限制算法，其降低DCO的电源电压灵敏度，并且能够显着减小电容器组的面积，否则将需要它。

    Digital radio processor architecture with reduced DCO modulation range requirement
    4.
    发明授权
    Digital radio processor architecture with reduced DCO modulation range requirement 有权
    数字无线电处理器架构具有降低的DCO调制范围要求

    公开(公告)号：US08345811B2

    公开(公告)日：2013-01-01

    申请号：US12060886

    申请日：2008-04-02

    申请人： Sarma S. Gunturi ,  Jawaharlal Tangudu ,  Sthanunathan Ramakrishnan ,  Jayawardan Janardhanan ,  Debapriya Sahu ,  Subhashish Mukherjee

    发明人： Sarma S. Gunturi ,  Jawaharlal Tangudu ,  Sthanunathan Ramakrishnan ,  Jayawardan Janardhanan ,  Debapriya Sahu ,  Subhashish Mukherjee

    IPC分类号： H04L7/00

    CPC分类号： H04L27/362 ,  H04L7/0331

    摘要： A method of achieving reduced modulation range requirement in a Digitally Controlled Oscillator (DCO) which is deployed as part of a DRP (Digital Radio Processor) and tuned to a tuning frequency range having operating-channel center-frequencies, wherein phase difference between consecutive samples is termed as FCW (Frequency Control Word), uses the steps of digitally modifying and limiting the FCW so that the FCW does not exceed known FCW thresholds, e.g., chosen from π/2, π/4, π/8, and redistributing the FCWs while maintaining a cumulative sum of phases and without significant EVM (Error Vector Magnitude) degradation. The FCW threshold can be chosen arbitrarily and need not be in the form of π/2n. The method uses a FCW limiting algorithm which reduces supply voltage sensitivity of the DCO and enables significant reduction in area of capacitor bank which would be otherwise needed.

    摘要翻译： 一种在数字控制振荡器（DCO）中实现减少的调制范围要求的方法，其被部署为DRP（数字无线电处理器）的一部分并被调谐到具有操作信道中心频率的调谐频率范围，其中连续样本之间的相位差 被称为FCW（频率控制字），使用数字修改和限制FCW的步骤，使得FCW不超过已知的FCW阈值，例如从＆pgr; / 2，＆pgr; / 4，＆pgr / 并重新分配FCW，同时保持相位的累积和，并且没有显着的EVM（误差向量幅度）劣化。 FCW阈值可以任​​意选择，不需要以＆pgr / 2n的形式。 该方法使用FCW限制算法，其降低DCO的电源电压灵敏度，并且能够显着减小电容器组的面积，否则将需要它。

    Eliminating narrowband interference in a receiver
    5.
    发明授权
    Eliminating narrowband interference in a receiver 有权
    消除接收机中的窄带干扰

    公开(公告)号：US07796716B2

    公开(公告)日：2010-09-14

    申请号：US11828349

    申请日：2007-07-26

    申请人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Saty Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    发明人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Saty Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    IPC分类号： H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

    CPC分类号： H04L27/2647 ,  H04B1/71 ,  H04L25/03006

    摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.

    摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。

    ELIMINATING NARROWBAND INTERFERENCE IN A RECEIVER
    6.
    发明申请
    ELIMINATING NARROWBAND INTERFERENCE IN A RECEIVER 有权
    消除接收机中的窄带干扰

    公开(公告)号：US20080043888A1

    公开(公告)日：2008-02-21

    申请号：US11828349

    申请日：2007-07-26

    申请人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Satya Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    发明人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Satya Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    IPC分类号： H04L1/00 ,  H04B1/10 ,  H04B1/707

    CPC分类号： H04L27/2647 ,  H04B1/71 ,  H04L25/03006

    摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.

    摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。

    PARALLEL SEARCH CIRCUIT FOR A MEDICAL IMPLANT RECEIVER
    7.
    发明申请
    PARALLEL SEARCH CIRCUIT FOR A MEDICAL IMPLANT RECEIVER 审中-公开
    用于医疗植入物接收器的并行搜索电路

    公开(公告)号：US20100036460A1

    公开(公告)日：2010-02-11

    申请号：US12536562

    申请日：2009-08-06

    申请人： Sthanunathan Ramakrishnan ,  Jawaharlal Tangudu ,  Visvesvaraya Pentakota

    发明人： Sthanunathan Ramakrishnan ,  Jawaharlal Tangudu ,  Visvesvaraya Pentakota

    IPC分类号： A61N1/08 ,  H04B1/16

    CPC分类号： A61N1/3727

    摘要： Parallel search circuit for a medical implant receiver. The circuit includes a radio frequency receiver that receives a first set of contents of a band of channels. The circuit also includes a processing circuit coupled to the radio frequency receiver to process in parallel a second set of contents of a plurality of channels of the band of channels and to detect a signal in the band of channels.

    摘要翻译： 用于医疗植入物接收器的并行搜索电路。 该电路包括接收频道频带的第一组内容的射频接收机。 电路还包括耦合到射频接收机的处理电路并行处理频道频带的多个信道的第二组内容并且检测频道频带中的信号。

    METHOD AND APPARATUS TO IMPROVE SENSITIVITY OF DECODING TIME OF A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER
    8.
    发明申请
    METHOD AND APPARATUS TO IMPROVE SENSITIVITY OF DECODING TIME OF A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER 有权
    提高全球导航卫星系统接收机解码时间灵敏度的方法与装置

    公开(公告)号：US20120257651A1

    公开(公告)日：2012-10-11

    申请号：US13080337

    申请日：2011-04-05

    申请人： Sandeep Rao ,  Jaiganesh Balakrishnan ,  Sthanunathan Ramakrishnan

    发明人： Sandeep Rao ,  Jaiganesh Balakrishnan ,  Sthanunathan Ramakrishnan

    IPC分类号： H04L27/06 ,  H04B1/707

    CPC分类号： H04L25/03203 ,  G01S19/243 ,  G01S19/246

    摘要： A method and an integrated circuit to improve sensitivity of decoding time of a GNSS receiver are disclosed. A plurality of estimates of states of an encoder for one or more instances of a time counter is maintained. A signal comprising a plurality of data bits corresponding to an instance of the time counter is detected and at least one augmented state for each estimate of states of the encoder is determined. A corresponding augmented state for successive instances of the time counter is predicted and an augmented branch metric for each of the at least one augmented state is computed. A path metric for the each estimate is updated based on the augmented branch metric for each of the at least one augmented state and a time counter value is determined based on the path metric for the each estimate.

    摘要翻译： 公开了一种提高GNSS接收机解码时间灵敏度的方法和集成电路。 维持用于时间计数器的一个或多个实例的编码器的状态的多个估计。 检测包括对应于时间计数器的实例的多个数据位的信号，并且确定编码器状态的每个估计的至少一个增强状态。 预测时间计数器的连续实例的对应的增强状态，并且计算用于至少一个增强状态中的每一个的增强分支量度。 基于用于所述至少一个增强状态中的每一个的增强分支度量来更新每个估计的路径度量，并且基于每个估计的路径度量来确定时间计数器值。

    Signaling in a Medical Implant Based System
    9.
    发明申请
    Signaling in a Medical Implant Based System 审中-公开
    基于医学植入物系统的信号传导

    公开(公告)号：US20120106602A1

    公开(公告)日：2012-05-03

    申请号：US13347893

    申请日：2012-01-11

    申请人： Sthanunathan Ramakrishnan ,  Ganesan Thiagarajan ,  Divyesh Kumar Shah ,  Jaiganesh Balakrishnan ,  Sriram Murali

    发明人： Sthanunathan Ramakrishnan ,  Ganesan Thiagarajan ,  Divyesh Kumar Shah ,  Jaiganesh Balakrishnan ,  Sriram Murali

    IPC分类号： H04B1/38

    CPC分类号： A61N1/3727

    摘要： Signaling in a medical implant based system. A method includes transmitting bits modulated with a predefined sequence in a band of channels by a first medical transceiver. The method includes transmitting bits modulated with a first predefined sequence of a plurality of predefined sequences by a first medical transceiver. The first predefined sequence is detected by a second medical transceiver when the second medical transceiver enters into an active state. A predetermined action is preformed if the first predefined sequence is detected.

    摘要翻译： 在医疗植入物系统中进行信号传导。 一种方法包括通过第一医疗收发器传输利用频道频带中的预定义序列调制的比特。 该方法包括通过第一医疗收发器传输利用多个预定义序列的第一预定义序列调制的比特。 当第二医疗收发器进入活动状态时，第一预定义序列由第二医疗收发器检测。 如果检测到第一预定义序列，则执行预定动作。