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    • 2. 发明授权
    • Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals
    • 用于应用维特比型PSK解调的最佳相关GPS信号的方法和系统
    • US07599452B2
    • 2009-10-06
    • US10534735
    • 2002-11-27
    • Jorgen S. Nielsen
    • Jorgen S. Nielsen
    • H04L27/06
    • H04B1/71057H04L25/03178H04L27/2332H04L2027/003H04L2027/0042H04L2027/0046H04L2027/0067H04L2027/0085
    • A method and system of improving sensitivity in the demodulation of a received signal over an arbitrary measurement time epoch, the method comprising the steps of: correlating the received signal in a coherent fashion (80); and utilizing a Viterbi phase state keying trellis demodulation with a variable resolution of phase states over 360° to demodulate the radio frequency phase trajectory of the signal throughout the measurement time epoch (70); and the system comprising a receiver for receiving a direct sequence spread spectrum signal, the receiver comprising: an antenna (10) for receiving the direct sequence spread spectrum signal; a downconverter (40) for downconverting the received signal, producing a downconverted signal; an analog to digital converter (60) to convert the downconverted signal to a digital signal; a despreader (80) for despreading and coherently correlating the digital signal to a known signal, creating a despread signal; and a processor (70) for applying a Viterbi algorithm to the despread signal.
    • 一种改善在任意测量时间周期上解调接收信号的灵敏度的方法和系统,该方法包括以下步骤:以一致的方式对所接收的信号进行相关(80); 并利用具有超过360°的相位状态的可变分辨率的维特比相位状态键控网格解调来解调整个测量时间周期(70)中的信号的射频相位轨迹; 并且所述系统包括用于接收直接序列扩频信号的接收机,所述接收机包括:用于接收直接序列扩频信号的天线(10); 下变频器(40),用于下变频接收的信号,产生下变频信号; 模数转换器(60),用于将下变频信号转换成数字信号; 解扩器(80),用于将数字信号与已知信号进行解扩和相干相关,产生解扩信号; 以及用于将Viterbi算法应用于去扩展信号的处理器(70)。
    • 6. 发明申请
    • SYSTEM AND METHOD OF CONTROLLING TRANSMIT POWER FOR MOBILE WIRELESS DEVICES WITH MULTI-MODE OPERATION OF ANTENNA
    • 用于天线多模式操作的移动无线设备的发射功率控制系统和方法
    • US20110294488A1
    • 2011-12-01
    • US13208684
    • 2011-08-12
    • Xin JinJorgen S. Nielsen
    • Xin JinJorgen S. Nielsen
    • H04W52/02H04W88/02
    • H04W52/288H04W52/283
    • A radio control system in a communication device is disclosed, the radio control system comprising: (a) a sensor capable of detecting a change in use mode of said device; (b) a power controller connected to said sensor to determine a power configuration based on the use mode; and (c) a power regulator connected to said power controller to apply the power configuration to a transmitted signal. A method of controlling a power configuration in a communication device is disclosed, comprising the steps of: (a) detecting a use mode; (b) changing the power configuration as a function of the use mode; and (c) communicating at the changed power configuration. A radio control system in a communication device is disclosed, comprising: (a) a sensor capable of detecting a change in use mode of said device; (b) a radio controller connected to said sensor to determine a radio configuration based on the use mode; and (c) a radio configuration module connected to said radio controller to apply the radio configuration to the transmitted signal.
    • 公开了一种通信设备中的无线电控制系统,所述无线电控制系统包括:(a)能够检测所述设备的使用模式变化的传感器; (b)连接到所述传感器的功率控制器,以基于使用模式确定功率配置; 和(c)连接到所述功率控制器的功率调节器以将功率配置应用于所发送的信号。 公开了一种控制通信设备中的功率配置的方法,包括以下步骤:(a)检测使用模式; (b)根据使用模式改变功率配置; 和(c)以改变的电力配置进行通信。 公开了一种通信设备中的无线电控制系统,包括:(a)能够检测所述设备的使用模式变化的传感器; (b)连接到所述传感器的无线电控制器,以基于使用模式确定无线电配置; 以及(c)连接到所述无线电控制器的无线电配置模块,以将无线电配置应用于所发送的信号。
    • 7. 发明授权
    • System and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna
    • 利用天线多模式操作来控制移动无线设备的发射功率的系统和方法
    • US08023984B2
    • 2011-09-20
    • US10679575
    • 2003-10-06
    • Xin JinJorgen S. Nielsen
    • Xin JinJorgen S. Nielsen
    • H04B7/00H04B1/00H04M1/00
    • H04W52/288H04W52/283
    • A radio control system in a wireless communication device includes a sensor operable to detect a change in a use mode of the wireless communication device during a communication session according to a pre-determined list of conditions, the use mode being one of a plurality of use modes that the communication device can operate in. The radio control system also includes a power controller connected to the sensor, that is operable to determine a power configuration according to the user mode detected. The power configuration is adjusted to balance the radio frequency coverage of a signal to be transmitted and the SAR. Of the radiation absorption. Each use mode is a different scenario in which the wireless communication device can be used.
    • 无线通信设备中的无线电控制系统包括:传感器,用于根据预先确定的条件列表在通信会话期间检测无线通信设备的使用模式的变化,所述使用模式是多个使用中的一个 通信设备可以操作的模式。无线电控制系统还包括连接到传感器的功率控制器,其可操作以根据检测到的用户模式来确定功率配置。 调整功率配置以平衡要发送的信号和SAR的射频覆盖。 的辐射吸收。 每种使用模式是可以使用无线通信设备的不同场景。
    • 8. 发明申请
    • Feedback Compensation Detector For A Direct Conversion Transmitter
    • 直接转换发射机的反馈补偿检测器
    • US20100233974A1
    • 2010-09-16
    • US12785607
    • 2010-05-24
    • Jorgen S. Nielsen
    • Jorgen S. Nielsen
    • H04B1/04
    • H03C3/40H04B1/0475H04B1/30
    • A feedback compensation detector for a direct conversion transmitter includes a baseband processor, a direct up-converter, an antenna, and an impairment detection and compensation feedback circuit. The baseband processor generates an in-phase (I) baseband signal and a quadrature-phase (Q) baseband signal. The direct up-converter is coupled to the baseband processor, and combines the I and Q baseband signals with an RF carrier signal to generate an RF output signal. The antenna is coupled to the direct up-converter, and transmits the RF output signal. The impairment detection and compensation feedback circuit is coupled to the RF output signal and the I and Q baseband signals. The impairment detection and compensation feedback circuit down-converts the RF output signal to generate an intermediate frequency (IF) signal, measures at least one signal impairment in the IF signal, and pre-distorts the I and Q baseband signals to compensate for the measured signal impairment.
    • 用于直接转换发射机的反馈补偿检测器包括基带处理器,直接上变频器,天线以及损伤检测和补偿反馈电路。 基带处理器产生同相(I)基带信号和正交相位(Q)基带信号。 直接上变频器耦合到基带处理器,并且将I和Q基带信号与RF载波信号组合以产生RF输出信号。 天线耦合到直接上变频器,并发射RF输出信号。 损伤检测和补偿反馈电路耦合到RF输出信号和I和Q基带信号。 损伤检测和补偿反馈电路对RF输出信号进行下变频以产生中频(IF)信号,测量IF信号中的至少一个信号损害,并且预失真I和Q基带信号以补偿所测量的 信号障碍。