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    • 1. 发明授权
    • Radio receiver having a diversity antenna structure
    • 具有分集天线结构的无线电接收机
    • US08457264B2
    • 2013-06-04
    • US10944509
    • 2004-09-17
    • James Ward Girardeau, Jr.Paul Morris AstrachanMathew A. RybickiBojan Subasic
    • James Ward Girardeau, Jr.Paul Morris AstrachanMathew A. RybickiBojan Subasic
    • H04B1/10
    • H04B7/0857
    • A radio receiver includes a first diversity antenna structure, a second diversity antenna structure, a first RF receiver section, a second RF receiver section, a combining module, and a baseband processing module. The first diversity antenna structure provides the received inbound RF signals from one of the plurality of first antennas based on a first antenna selection signal to produce first received inbound RF signals. The second diversity antenna structure provides the received inbound RF signals from one of the plurality of second antennas based on a second antenna selection signal to produce second received inbound RF signals. The first and second RF receiver sections are operably coupled to convert the first and second received inbound RF signals into first and second inbound baseband signals, respectively. The combining module combines the first and second inbound baseband signals to produce inbound baseband signals.
    • 无线电接收机包括第一分集天线结构,第二分集天线结构,第一RF接收机部分,第二RF接收机部分,组合模块和基带处理模块。 第一分集天线结构基于第一天线选择信号提供来自多个第一天线之一的接收入站RF信号,以产生第一接收的入站RF信号。 第二分集天线结构基于第二天线选择信号提供来自多个第二天线之一的接收的入站RF信号,以产生第二接收的入站RF信号。 第一和第二RF接收机部分可操作地耦合以分别将第一和第二接收入站RF信号转换成第一和第二入站基带信号。 组合模块组合第一和第二入站基带信号以产生入站基带信号。
    • 4. 发明授权
    • Correlation module for use in a radio receiver
    • 用于无线电接收机的相关模块
    • US07280588B2
    • 2007-10-09
    • US10742499
    • 2003-12-19
    • James C. LynchJames Ward Girardeau, Jr.Paul Morris Astrachan
    • James C. LynchJames Ward Girardeau, Jr.Paul Morris Astrachan
    • H04B1/69H03D1/00
    • H04B1/707H04B1/70752H04B2201/70711
    • A correlation module includes a plurality of first functional modules, a plurality of second functional modules, a plurality of function adjust modules, a summation module, a correlation value register, and a correlation evaluation module. The plurality of first functional modules is operably coupled to perform a first function upon a first corresponding pipelined data element to produce a first corresponding value. The plurality of second functional modules is operably coupled to perform a second function upon a second corresponding pipelined data element to produce a second corresponding value. The plurality of function adjust modules is operably coupled to selected ones of the plurality of first functional modules and to selected ones of the plurality of second functional modules. The summation module is operably coupled to sum the plurality of first corresponding values, the plurality of second corresponding values, and a previous correlation value to produce a current correlation value. The correlation evaluation module is operably coupled to compare the current correlation value with a correlation threshold to determine whether current pipelined data correlates with the expected pattern of the training sequence.
    • 相关模块包括多个第一功能模块,多个第二功能模块,多个功能调整模块,求和模块,相关值寄存器和相关性评估模块。 多个第一功能模块可操作地耦合以在第一对应流水线数据元件上执行第一功能以产生第一对应值。 多个第二功能模块可操作地耦合以在第二对应流水线数据元件上执行第二功能以产生第二对应值。 多个功能调整模块可操作地耦合到多个第一功能模块中的选定的功能模块和多个第二功能模块中的选定的功能模块。 求和模块可操作地耦合以对多个第一对应值,多个第二对应值和先前的相关值求和以产生电流相关值。 相关评估模块可操作地耦合以将当前相关值与相关阈值进行比较,以确定当前流水线数据是否与训练序列的期望模式相关。
    • 5. 发明授权
    • Fast signal detection process
    • 快速信号检测过程
    • US07072632B2
    • 2006-07-04
    • US10683955
    • 2003-10-10
    • Paul Morris AstrachanJames Ward Girardeau, Jr.
    • Paul Morris AstrachanJames Ward Girardeau, Jr.
    • H04B17/00
    • H04B17/318
    • A valid signal may be detected by initializing gain settings of the receiver section. The processing then continues by measuring received signal strength of a signal received by the receiver section to produce a 1st received signal strength indication (RSSI). The processing continues by adjusting the gain setting of the receiver section such that the 1st received signal strength indication is a predetermined offset less than a signal strength threshold. The process then continues by measuring the received signal strength of the gain adjusted representation of the signal to produce a 2nd received signal strength indication. The processing continues by appending a 2nd offset to the 2nd received signal strength value to produce an adjusted received signal strength indication value when the 2nd received signal strength value drifts from the signal strength threshold less the predetermined offset. The processing continues by measuring the received signal strength of received signals and appending the offset until a possible valid signal is detected. When the possible valid signal is detected, the gain of the receiver is adjusted based on its dynamic range.
    • 可以通过初始化接收器部分的增益设置来检测有效信号。 然后通过测量由接收器部分接收的信号的接收信号强度来继续处理以产生接收信号强度指示(RSSI)的处理。 通过调整接收机部分的增益设置继续进行处理,使得接收信号强度指示为小于信号强度阈值的预定偏移。 然后,该过程通过测量信号的增益调整表示的接收信号强度来继续,以产生接收信号强度指示。 该处理继续,通过将2< nd&>偏移补偿附加到第2< nd>接收信号强度值,以产生调整的接收信号强度指示值,当第2 nd / >接收信号强度值从信号强度阈值漂移小于预定偏移量。 该处理通过测量接收到的信号的接收信号强度并附加偏移直到检测到可能的有效信号而继续。 当检测到可能的有效信号时,根据其动态范围调整接收机的增益。
    • 6. 发明授权
    • Method and apparatus for synchronized channel transmission
    • 用于同步信道传输的方法和装置
    • US07961759B2
    • 2011-06-14
    • US10376806
    • 2003-02-28
    • Michael R. MayJames Ward Girardeau, Jr.Paul M. AstrachanMathew A. Rybicki
    • Michael R. MayJames Ward Girardeau, Jr.Paul M. AstrachanMathew A. Rybicki
    • H04J3/06
    • H04L7/041H04L27/2607H04L27/2662H04L27/2678
    • A method and apparatus for synchronized channel transmission are disclosed. One embodiment of the method comprises: generating a first data stream and a second data stream; packetizing the first data stream to produce a first plurality of data packets; packetizing the second data stream to produce a second plurality of data packets; baseband processing the first plurality of data packets to produce a first plurality of symbols for each of the first plurality of data packets; baseband processing the second plurality of data packets to produce a second plurality of symbols for each of the second plurality of data packets; converting the first plurality of symbols into a first radio frequency signal; converting the second plurality of symbols into a second radio frequency signal; and synchronizing at least one of: generating the first and the second data streams, packetizing the first and second data streams, baseband processing the first and second plurality of data packets, and converting the first and second plurality of symbols.
    • 公开了一种用于同步信道传输的方法和装置。 该方法的一个实施例包括:产生第一数据流和第二数据流; 打包第一数据流以产生第一多个数据分组; 打包第二数据流以产生第二多个数据分组; 基带处理所述第一多个数据分组以产生所述第一多个数据分组中的每一个的第一多个符号; 基带处理所述第二多个数据分组以产生所述第二多个数据分组中的每一个的第二多个符号; 将所述第一多个符号转换为第一射频信号; 将所述第二多个符号转换为第二射频信号; 以及同步以下各项中的至少一个:产生所述第一和第二数据流,对所述第一和第二数据流进行分组,对所述第一和第二多个数据分组进行基带处理,以及转换所述第一和第二多个符号。
    • 8. 发明授权
    • Method and apparatus for signal decoding in a diversity reception system with maximum ratio combining
    • 用于具有最大比率组合的分集接收系统中的信号解码的方法和装置
    • US07421046B2
    • 2008-09-02
    • US10376486
    • 2003-02-28
    • Bradley A. WallaceJames Ward Girardeau, Jr.James Robert Kelton
    • Bradley A. WallaceJames Ward Girardeau, Jr.James Robert Kelton
    • H04B7/10H04L27/00
    • H04B7/0857
    • A method signal for decoding in a diversity reception system can include converting the received RF signal into a plurality of digital baseband signals; phase aligning the plurality of digital baseband signals to produce a plurality of phase aligned digital baseband signals; determining a plurality of error terms from the plurality of phase aligned digital baseband signals; one of which corresponding to one of the plurality of phase aligned digital baseband signals; determining a plurality of weighting factors for the plurality of error terms based on characteristics of the plurality of digital baseband signals, one of which corresponding to one of the plurality of error terms; applying the plurality of weighting factors to the plurality of error terms to produce a plurality of weighted error terms; summing the plurality of weighted error terms to produce an error term for decoding.
    • 用于在分集接收系统中解码的方法信号可以包括将所接收的RF信号转换成多个数字基带信号; 对多个数字基带信号进行相位对准以产生多个相位对准的数字基带信号; 从所述多个相位对准的数字基带信号中确定多个误差项; 其中一个对应于所述多个相位对准的数字基带信号之一; 基于所述多个数字基带信号的特性来确定所述多个误差项的多个加权因子,所述多个数字基带信号中的一个对应于所述多个误差项之一; 将所述多个加权因子应用于所述多个误差项以产生多个加权误差项; 对多个加权误差项求和以产生用于解码的误差项。
    • 9. 发明授权
    • Apparatus for recovering timing of a digital signal for a transceiver
    • 用于恢复收发器的数字信号定时的装置
    • US06707868B1
    • 2004-03-16
    • US09291136
    • 1999-04-12
    • John R. CamagnaJames Ward Girardeau, Jr.Stanley K. LingHiroshi Takatori
    • John R. CamagnaJames Ward Girardeau, Jr.Stanley K. LingHiroshi Takatori
    • H04L700
    • H04L7/0058H04L25/0202H04L2025/03471
    • A digital timing recovery system wherein the rate conversion is independent of the sampling rate, and which may be set in a network mode or a remote mode. The invention includes a transceiver core for processing transmit and receive data at a predetermined baud rate, an analog front end for transmitting and receiving analog signals over a network, a phase detector for generating a phase error estimate and a timing controller for receiving the phase error estimate signal and generating a receive and transmit phase control signal for controlling timing of the analog front end. A selector is provided for selecting a remote mode of operation or a network mode of operation. The analog front end further includes a transmit converter for converting the transmit data at the baud rate to a digital output at a transmit rate and a digital to analog converter for converting the digital output to an analog signal, and an analog to digital converter for converting the analog receive signal to a digital receive signal and a receive converter for converting the digital receive signal at a receive rate to the baud rate. The phase detector includes a channel estimator for generating a coefficient error signal and the timing controller includes a loop filter for producing a control signal for a numerically controlled oscillator that produces a baud interrupt signal and the phase control signals.
    • 数字定时恢复系统,其中速率转换独立于采样速率,并且其可以被设置在网络模式或远程模式中。 本发明包括用于以预定波特率处理发送和接收数据的收发机核心,用于通过网络发送和接收模拟信号的模拟前端,用于产生相位误差估计的相位检测器和用于接收相位误差的定时控制器 估计信号并产生用于控制模拟前端的定时的接收和发送相位控制信号。 提供选择器用于选择远程操作模式或网络操作模式。 模拟前端还包括发送转换器,用于将波特率的发送数据以发送速率转换为数字输出,以及用于将数字输出转换为模拟信号的数模转换器,以及用于转换的模数转换器 到数字接收信号的模拟接收信号和用于以接收速率将数字接收信号转换成波特率的接收转换器。 相位检测器包括用于产生系数误差信号的信道估计器,并且定时控制器包括用于产生用于产生波特率中断信号和相位控制信号的数控振荡器的控制信号的环路滤波器。