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    • 2. 发明申请
    • Radio receiver having a diversity antenna structure
    • 具有分集天线结构的无线电接收机
    • US20050032497A1
    • 2005-02-10
    • US10944509
    • 2004-09-17
    • James GirardeauPaul AstrachanMathew RybickiBojan Subasic
    • James GirardeauPaul AstrachanMathew RybickiBojan Subasic
    • H04B7/08H04B1/00H04B1/06H04B7/00
    • 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 includes a plurality of first antennas and each of the plurality of first antennas is operably coupled to receive inbound radio frequency (RF) signals, wherein 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 includes a plurality of second antennas and each of the plurality of second antennas is operably coupled to receive the inbound RF signals, wherein 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 RF receiver section is operably coupled to convert the first received inbound RF signals into first inbound baseband signals. The second RF receiver section is operably coupled to convert the second received inbound RF signals into second inbound baseband signals. The combining module is operably coupled to combine the first and second inbound baseband signals to produce inbound baseband signals. The baseband processing module is operably coupled to convert the inbound baseband signals into inbound data and to produce the first and second antenna selection signals based on signal integrity of the first and second diversity antenna structures, respectively.
    • 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。 所述第一分集天线结构包括多个第一天线,并且所述多个第一天线中的每一个可操作地耦合以接收入站射频(RF)信号,其中所述第一分集天线结构提供从所述多个 基于第一天线选择信号的第一天线以产生第一接收的入站RF信号。 第二分集天线结构包括多个第二天线,并且多个第二天线中的每一个可操作地耦合以接收入站RF信号,其中第二分集天线结构从多个第二天线之一提供接收的入站RF信号 在第二天线选择信号上产生第二接收的入站RF信号。 第一RF接收机部分可操作地耦合以将第一接收的入站RF信号转换成第一入站基带信号。 第二RF接收机部分可操作地耦合以将第二接收的入站RF信号转换成第二入站基带信号。 组合模块可操作地耦合以组合第一和第二入站基带信号以产生入站基带信号。 基带处理模块可操作地耦合以将入站基带信号转换成入站数据,并且分别基于第一和第二分集天线结构的信号完整性产生第一和第二天线选择信号。
    • 4. 发明申请
    • Fast signal detection process
    • 快速信号检测过程
    • US20050079841A1
    • 2005-04-14
    • US10683955
    • 2003-10-10
    • Paul AstrachanJames Girardeau
    • Paul AstrachanJames Girardeau
    • 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以产生第一接收信号强度指示(RSSI),继续该处理。 通过调整接收机部分的增益设置继续处理,使得第一接收信号强度指示是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,以产生第二接收信号强度指示。 当第二接收信号强度值从信号强度阈值漂移小于预定偏移量时,通过将第二偏移附加到第二接收信号强度值来进行处理,以产生调整的接收信号强度指示值 。 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。
    • 5. 发明申请
    • Correlation module for use in a radio receiver
    • 用于无线电接收机的相关模块
    • US20050135464A1
    • 2005-06-23
    • US10742499
    • 2003-12-19
    • James LynchJames GirardeauPaul Astrachan
    • James LynchJames GirardeauPaul Astrachan
    • H04B1/707H04L27/06
    • 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。