SYSTEMS AND METHODS FOR SWITCHING REFERENCE CRYSTAL OSCILLATORS FOR A TRANSCEIVER OF A WIRELESS DEVICE

    公开(公告)号:EP3764551A3

    公开(公告)日:2021-01-27

    申请号:EP20192706.8

    申请日:2016-12-19

    摘要: Systems and methods are disclosed herein that relate to a wireless device that intelligently uses different reference crystal oscillators (XOs) for a Phase Locked Loop(s) (PLL(s)) in a transceiver of the wireless device. Embodiments of a method of operation of a wireless device comprising a first XO that operates at a first reference frequency and a second XO that operates at a second reference frequency that is greater than the first reference frequency are disclosed. In some embodiments, the method of operation of the wireless devices comprises making a decision as to whether to configure a receiver of the wireless device to use the first XO or the second XO and configuring the receiver of the wireless device to use the first XO or the second XO in accordance with the decision.

    Analog-to-digital converter
    2.
    发明授权
    Analog-to-digital converter 有权
    模数转换器/ Digitalumsetzer

    公开(公告)号:EP2592757B1

    公开(公告)日:2017-04-26

    申请号:EP11189058.8

    申请日:2011-11-14

    IPC分类号: H03M3/00

    摘要: A continuous-time ”£-ADC (1) is disclosed, comprising a sampled quantizer (5) arranged to generate samples y(n) of a digital output signal of the ”£-ADC (1) at sample instants nT. The ”£-ADC (1) further comprises two or more DACs (10a-b), each arranged to generate an analog feedback signal based on the samples of the digital output signal generated by the sampled quantizer (5), and a continuous-time analog network (20) arranged to generate an analog input signal to the quantizer (5) based on the feedback signal(s) from the two or more DACs (10a-b) and an analog input signal to the 4E-ADC (1). At least a first DAC (10a) of the two or more DACs (10a-b) is adapted to generate a pulsed feedback signal that, for each n, comprises a pulse, the magnitude of which is proportional to the sample of the digital output signal at sample instant nT and which lasts between the time instants (n+±1)T and (n+²1)T, wherein 0

    摘要翻译: 公开了一种连续时间“-ADC(1),包括被采样的量化器(5),被配置为在采样时刻nT产生”-ADC(1)的数字输出信号的采样y(n)“。 “-ADC(1)还包括两个或更多个DAC(10a-b),每个DAC(10a-b)被布置为基于由采样的量化器(5)生成的数字输出信号的采样来产生模拟反馈信号, 时间模拟网络(20),其被布置为基于来自所述两个或更多个DAC(10a-b)的反馈信号和到4E-ADC(1)的模拟输入信号,向量化器(5)生成模拟输入信号 )。 两个或多个DAC(10a-b)中的至少第一DAC(10a)适于产生脉冲反馈信号,对于每个n,脉冲反馈信号包括脉冲,其幅度与数字输出的采样成比例 信号在采样时刻nT,并且在时刻(n +±1)T和(n + 21)T之间持续,其中0 <±1 <2 <1。两个或更多个DAC的至少第二DAC(10b) (10a-b)适于产生脉冲反馈信号,对于每个n,脉冲反馈信号包括脉冲,该脉冲的幅度与采样时刻nT处的数字输出信号的采样成比例,并且在时刻(n + ±2)T和(n +2)T,其中0 <±2 <1 <2。 第一DAC(10a)位于第一反馈回路中,第二DAC(10b)位于第二反馈回路中,第二反馈回路是相对于第一反馈回路的外部反馈回路。 还公开了相应的无线电接收机电路,相应的集成电路和相应的无线电通信装置。

    Apparatus and Method for Power Saving
    3.
    发明公开
    Apparatus and Method for Power Saving 审中-公开
    Vorrichtung und Verfahren zum Stromsparen

    公开(公告)号:EP2530864A1

    公开(公告)日:2012-12-05

    申请号:EP11168687.9

    申请日:2011-06-03

    IPC分类号: H04L1/20 H04B17/00 H04W52/02

    摘要: The present invention takes advantage of a phase correlation process at a receiver, for example the plurality of different clock phases that are provided for ascertaining the most favourable phase for burst reception in a digital signalling link, and uses this phase correlation information for a different purpose. For example, the plurality of different clock phases are used to provide an indication of the quality of the received signal. The quality of the received signal can then be used to adapt one or more parameters in the digital signalling link, to save power when desired.

    摘要翻译: 本发明利用接收机的相位相关处理,例如提供用于确定在数字信令链路中用于突发接收的最有利相位的多个不同的时钟相位,并且将该相位相关信息用于不同的目的 。 例如,多个不同的时钟相位用于提供接收信号质量的指示。 然后可以使用接收信号的质量来调整数字信号链路中的一个或多个参数,以便在需要时节省功率。

    Narrowband interference cancellation method and apparatus
    4.
    发明公开
    Narrowband interference cancellation method and apparatus 审中-公开
    窄带干扰抑制装置和

    公开(公告)号:EP1986334A3

    公开(公告)日:2012-04-25

    申请号:EP08153760.7

    申请日:2008-03-31

    发明人: Sundström, Lars

    IPC分类号: H04B1/12 H04B1/707

    摘要: A Cartesian Feedback-loop Signal Canceller (CFSC) recovers a signal of interest from a composite signal by cancelling a narrowband interferer from the composite signal. According to one embodiment, narrowband interference cancellation is performed by destructively combining a composite signal including a narrowband interference signal and a signal of interest with an estimate of the narrowband interference signal to generate an interference-compensated signal. A feedback signal is generated having Cartesian components derived from the interference-compensated signal. Cartesian components associated with the signal of interest are removed from the feedback signal to generate the narrowband interference signal estimate.

    Narrowband interference cancellation method and apparatus
    6.
    发明公开
    Narrowband interference cancellation method and apparatus 审中-公开
    Schmalband-Störungsunterdrückungund Vorrichtung

    公开(公告)号:EP1986334A2

    公开(公告)日:2008-10-29

    申请号:EP08153760.7

    申请日:2008-03-31

    发明人: Sundström, Lars

    IPC分类号: H04B1/10 H04B1/707

    摘要: A Cartesian Feedback-loop Signal Canceller (CFSC) recovers a signal of interest from a composite signal by cancelling a narrowband interferer from the composite signal. According to one embodiment, narrowband interference cancellation is performed by destructively combining a composite signal including a narrowband interference signal and a signal of interest with an estimate of the narrowband interference signal to generate an interference-compensated signal. A feedback signal is generated having Cartesian components derived from the interference-compensated signal. Cartesian components associated with the signal of interest are removed from the feedback signal to generate the narrowband interference signal estimate.

    摘要翻译: 笛卡尔反馈回路信号消除器(CFSC)通过从复合信号中消除窄带干扰信号,从复合信号中恢复感兴趣的信号。 根据一个实施例,通过将包括窄带干扰信号和感兴趣信号的复合信号与窄带干扰信号的估计相差组合来产生窄带干扰消除以产生干扰补偿信号。 生成具有从干涉补偿信号导出的笛卡尔分量的反馈信号。 与感兴趣信号相关联的笛卡尔分量从反馈信号中去除以产生窄带干扰信号估计。

    SYSTEMS AND METHODS FOR SWITCHING REFERENCE CRYSTAL OSCILLATORS FOR A TRANSCEIVER OF A WIRELESS DEVICE

    公开(公告)号:EP4254792A3

    公开(公告)日:2024-02-28

    申请号:EP23187562.6

    申请日:2016-12-19

    摘要: Systems and methods are disclosed herein that relate to a wireless device that intelligently uses different reference crystal oscillators (XOs) for a Phase Locked Loop(s) (PLL(s)) in a transceiver of the wireless device. Embodiments of a method of operation of a wireless device comprising a first XO that operates at a first reference frequency and a second XO that operates at a second reference frequency that is greater than the first reference frequency are disclosed. In some embodiments, the method of operation of the wireless devices comprises making a decision as to whether to configure a receiver of the wireless device to use the first XO or the second XO and configuring the receiver of the wireless device to use the first XO or the second XO in accordance with the decision. In a first embodiment the decision is based, on whether or not the wireless device is synchronized to a wireless network and in a second embodiment the decision is based on whether or not a synchronization signal was detected whilst performing an initial cell search.

    Complex intermediate frequency based receiver architecture
    10.
    发明公开
    Complex intermediate frequency based receiver architecture 有权
    Komplexe Zwischenfrequenz-basierteEmpfängerarchitektur

    公开(公告)号:EP2487788A1

    公开(公告)日:2012-08-15

    申请号:EP11001147.5

    申请日:2011-02-11

    IPC分类号: H03D7/18

    摘要: The disclosure relates to a Complex Intermediate Frequency (CIF)-based receiver adapted to process a received signal comprising a signal component at a desired frequency and a signal component as an image frequency. The CIF-based receiver determines the power of the received signal by calibrating the receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency, introduces signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency, and determines the power of the signal component at the image frequency based on the amount of degradation.

    摘要翻译: 本发明涉及一种基于复杂中频(CIF)的接收机,其适于处理包含期望频率的信号分量的接收信号和作为图像频率的信号分量。 基于CIF的接收机通过校准接收机来确定接收信号的功率,以使图像频率处的信号分量的功率最小化,从而影响在期望频率处的信号分量,从而引起来自图像频率的信号泄漏以故意降级 以期望频率的信号分量的质量,并且基于退化量确定图像频率处的信号分量的功率。