公开(公告)号：US20100217553A1

公开(公告)日：2010-08-26

申请号：US12641219

申请日：2009-12-17

Applicant: William Von Novak ,  Stanley S. Toncich ,  Roberto Rimini ,  Kevin D. Lee

Inventor： William Von Novak ,  Stanley S. Toncich ,  Roberto Rimini ,  Kevin D. Lee

IPC: G06F19/00 ,  G01R27/00

CPC classification number: H04B5/0056 ,  G06K7/0008

Abstract: Exemplary embodiments are directed to wireless power transfer. Energy from a transmit antenna is coupled to internal signals on a transmitter. An impedance measurement circuit generates an impedance indication signal for indicating an impedance difference between the coupled internal signals by comparing them. A controller samples the impedance indication signal and determines digital signaling values responsive to changes in the impedance indication signal. The impedance measurement circuit measures one or more of magnitude difference of the internal signals, phase difference of the internal signals, and changes in power consumed by an amplifier coupled between the RF signal and the transmit antenna. A transmitter generates the electromagnetic field with a transmit antenna responsive to a Radio Frequency (RF) signal to create a coupling-mode region within a near field of the transmit antenna.

Abstract translation: 示例性实施例涉及无线功率传输。 来自发射天线的能量耦合到发射机上的内部信号。 阻抗测量电路通过比较它们来产生用于指示耦合的内部信号之间的阻抗差的阻抗指示信号。 控制器对阻抗指示信号进行采样，并根据阻抗指示信号的变化确定数字信号值。 阻抗测量电路测量内部信号的幅度差异，内部信号的相位差和耦合在RF信号与发射天线之间的放大器消耗的功率变化中的一个或多个。 发射机利用射频（RF）信号产生具有发射天线的电磁场，以在发射天线的近场内产生耦合模式区域。

公开(公告)号：US20100034327A1

公开(公告)日：2010-02-11

申请号：US12510176

申请日：2009-07-27

Applicant: Roberto Rimini

Inventor： Roberto Rimini

IPC: H04L27/08

CPC classification number: H03G3/3052

Abstract: Techniques for performing joint time-frequency automatic gain control (AGC) by a receiver are described. In an aspect, the receiver may transform time-domain samples with a fast Fourier transform (FFT) to obtain frequency-domain symbols and may detect for saturation of the frequency-domain symbols. The receiver may adjust a gain based on whether saturation is detected and may apply the gain prior to the FFT. In one design, the receiver may use a nominal value for a setpoint if saturation is not detected and may reduce the setpoint if saturation is detected. The receiver may adjust the gain based on the setpoint, which may determine the average power of the time-domain samples. In another design, the receiver may determine the gain based on a gain offset and may vary the gain offset based on whether saturation is detected. For both designs, the receiver may apply the gain on digital samples and/or an analog signal prior to the FFT.

Abstract translation: 描述了由接收机执行联合时频自动增益控制（AGC）的技术。 在一方面，接收机可以利用快速傅里叶变换（FFT）来变换时域采样以获得频域符号，并且可以检测频域符号的饱和度。 接收机可以基于是否检测到饱和度来调整增益，并且可以在FFT之前应用增益。 在一种设计中，如果未检测到饱和度，则接收器可以使用额定值作为设定值，如果检测到饱和，则可能会降低设定值。 接收机可以基于设定点调整增益，这可以确定时域采样的平均功率。 在另一种设计中，接收机可以基于增益偏移来确定增益，并且可以基于是否检测到饱和度来改变增益偏移。 对于这两种设计，接收机可以在FFT之前将增益应用于数字样本和/或模拟信号。

公开(公告)号：US07532664B2

公开(公告)日：2009-05-12

申请号：US10909607

申请日：2004-08-02

Applicant: Roberto Rimini ,  Jukka Tapaninen

Inventor： Roberto Rimini ,  Jukka Tapaninen

IPC: H04B1/707

CPC classification number: H04W52/24 ,  H04B1/712 ,  H04B17/336 ,  H04B2201/70701 ,  H04W52/42

Abstract: In one aspect this invention provides a method to operate a receiver, and includes applying signals received from at least first and second antennas to corresponding first and second finger pairs, where each finger pair comprises a first finger member and a second finger member, and outputting traffic symbols and pilot symbols from each finger member; space combining weighted pilot symbols for each pair to produce a noise plus interference estimation for the pair under consideration; combining the noise plus interference estimation of each pair to generate a cumulative noise plus interference estimate; subtracting the cumulative noise plus interference estimate from an estimate of the total signal energy input to a channel decoder to generate an unbiased total signal estimate; and dividing the unbiased total signal estimate by the cumulative noise plus interference estimate to obtain an unbiased and accurate signal to interference plus noise ratio estimate that accounts for both space correlated and uncorrelated interference terms.

Abstract translation: 在一个方面，本发明提供了一种操作接收机的方法，并且包括将从至少第一和第二天线接收的信号应用于对应的第一和第二手指对，其中每个手指对包括第一手指构件和第二手指构件，并且输出 每个手指成员的交通符号和导频符号; 空间组合每对的加权导频符号，以产生正在考虑的对的噪声加干扰估计; 组合每对的噪声加干扰估计以产生累积噪声加干扰估计; 从输入到信道解码器的总信号能量的估计中减去累积噪声加干扰估计，以产生无偏差总信号估计; 并且将无偏差总信号估计除以累积噪声加干扰估计，以获得占空间相关和不相关干扰项的无偏差和准确的信噪比加噪声比估计。

公开(公告)号：US20060023775A1

公开(公告)日：2006-02-02

申请号：US10909607

申请日：2004-08-02

Applicant: Roberto Rimini ,  Jukka Tapaninen

Inventor： Roberto Rimini ,  Jukka Tapaninen

IPC: H04B1/707 ,  H04L1/02

CPC classification number: H04W52/24 ,  H04B1/712 ,  H04B17/336 ,  H04B2201/70701 ,  H04W52/42

Abstract: In one aspect this invention provides a method to operate a receiver, and includes applying signals received from at least first and second antennas to corresponding first and second finger pairs, where each finger pair comprises a first finger member and a second finger member, and outputting traffic symbols and pilot symbols from each finger member; space combining weighted pilot symbols for each pair to produce a noise plus interference estimation for the pair under consideration; combining the noise plus interference estimation of each pair to generate a cumulative noise plus interference estimate; subtracting the cumulative noise plus interference estimate from an estimate of the total signal energy input to a channel decoder to generate an unbiased total signal estimate; and dividing the unbiased total signal estimate by the cumulative noise plus interference estimate to obtain an unbiased and accurate signal to interference plus noise ratio estimate that accounts for both space correlated and uncorrelated interference terms.

公开(公告)号：US06836647B2

公开(公告)日：2004-12-28

申请号：US10120569

申请日：2002-04-10

Applicant: Roberto Rimini ,  Nick Carbone

Inventor： Roberto Rimini ,  Nick Carbone

IPC: H04B1700

CPC classification number: H03G3/3068 ,  H04B1/707

Abstract: A system and method for estimating the power-level of a signal received at a mobile-station receiver operating in a wireless network according to a CDMA standard. An analog automatic gain controller (AGC) loop, a digital filter, and a digital AGC loop are used, in sequence, to process a received RF signal that has been amplified, converted to baseband, and filtered using an analog baseband signal. The linear gain values of the analog AGC and the digital AGC are multiplied to produce a gain-value product. The logarithm of the gain-value product is used for executing the power-estimating function by comparison to a predetermined received-signal power estimation curve.

Abstract translation: 一种用于估计在根据CDMA标准在无线网络中操作的移动台接收机处接收的信号的功率电平的系统和方法。 依次使用模拟自动增益控制器（AGC）环路，数字滤波器和数字AGC环路来处理已被放大，转换为基带的接收RF信号，并使用模拟基带信号进行滤波。 将模拟AGC和数字AGC的线性增益值相乘以产生增益值乘积。 通过与预定的接收信号功率估计曲线相比较，增益值乘积的对数被用于执行功率估计功能。