公开(公告)号：US20050107051A1

公开(公告)日：2005-05-19

申请号：US10792171

申请日：2004-03-02

申请人： Vladimir Aparin ,  Gary Ballantyne ,  Charles Persico

发明人： Vladimir Aparin ,  Gary Ballantyne ,  Charles Persico

IPC分类号： H04B1/52 ,  H04B1/00 ,  H01Q11/12 ,  H03C1/62 ,  H04B1/04 ,  H04B1/44 ,  H04B15/00 ,  H04B17/00

CPC分类号： H04B1/525

摘要： An adaptive filter suitable for fabrication on an RF integrated circuit and used for transmit (TX) leakage rejection in a wireless full-duplex communication system is described. The adaptive filter includes a summer and an adaptive estimator. The summer receives an input signal having a TX leakage signal and an estimator signal having an estimate of the TX leakage signal, subtracts the estimator signal from the input signal, and provides an output signal having the TX leakage signal attenuated. The adaptive estimator receives the output signal and a reference signal having a version of the transmit signal, estimates the TX leakage signal in the input signal based on the output signal and the reference signal, and provides the estimator signal. The adaptive estimator may utilize an LMS algorithm to minimize a mean square error between the TX leakage signal in the input signal and the TX leakage signal estimate in the estimator signal.

摘要翻译： 描述了适用于在RF集成电路上制造并用于无线全双工通信系统中的发射（TX）泄漏抑制的自适应滤波器。 自适应滤波器包括一个加法器和一个自适应估计器。 夏天接收具有TX泄漏信号的输入信号和具有TX泄漏信号的估计的估计信号，从输入信号中减去估计器信号，并且提供具有衰减的TX泄漏信号的输出信号。 自适应估计器接收输出信号和具有发射信号版本的参考信号，基于输出信号和参考信号估计输入信号中的TX泄漏信号，并提供估计器信号。 自适应估计器可以利用LMS算法来最小化输入信号中的TX泄漏信号与估计器信号中的TX泄漏信号估计之间的均方误差。

公开(公告)号：US20070052489A1

公开(公告)日：2007-03-08

申请号：US11211248

申请日：2005-08-24

申请人： Gary Ballantyne ,  Gurkanwal Sahota

发明人： Gary Ballantyne ,  Gurkanwal Sahota

IPC分类号： H03L7/00

CPC分类号： H03L7/107 ,  H03L7/093

摘要： An embodiment pertains to a phase locked loop (PLL) circuit. The PLL includes a voltage controlled oscillator which outputs a signal at a desired frequency. A phase detector is coupled to an output from the voltage controlled oscillator. The phase detector compares the phase of a signal output from the voltage controlled oscillator (VCO) with the phase of a reference signal. A loop filter is coupled to the VCO and the phase detector. The loop filter has a locking mode of operation for locking the phase of the VCO signal to the phase of the reference signal. The loop filter can subsequently be placed in a tracking mode of operation which adjusts the phase of the VCO signal to track the phase of the reference signal.

摘要翻译： 实施例涉及锁相环（PLL）电路。 PLL包括以期望频率输出信号的压控振荡器。 相位检测器耦合到压控振荡器的输出。 相位检测器将从压控振荡器（VCO）输出的信号的相位与参考信号的相位进行比较。 环路滤波器耦合到VCO和相位检测器。 环路滤波器具有用于将VCO信号的相位锁定到参考信号的相位的锁定操作模式。 随后可以将环路滤波器置于跟踪操作模式中，该操作模式调整VCO信号的相位以跟踪参考信号的相位。

公开(公告)号：US20050014477A1

公开(公告)日：2005-01-20

申请号：US10620896

申请日：2003-07-15

申请人： Gary Ballantyne

发明人： Gary Ballantyne

IPC分类号： H04B1/40 ,  H04B1/04

CPC分类号： H04B7/0689 ,  H04B1/405

摘要： This disclosure is directed to techniques for voice and data transmission from a wireless communication device, such as mobile telephone handset. In accordance with the disclosure, a wireless communication provides a hybrid coupler that permits voice and data calls to be combined for transmission over a common air interface. When increased transmit power is required, the wireless communication device prioritizes the voice call over the data call. In this case, the voice call is sent over both the voice output branch and the data output branch, taking advantage of the power amplifier in each output branch chain to achieve a greater overall transmit power for the voice transmission. In this manner, the mobile subscriber unit independently and simultaneously handles data and voice calls under ordinary circumstances, but drops the data call and combines the voice and data output branches for voice transmission when increased transmit power is required for the voice transmission.

摘要翻译： 本公开涉及用于来自诸如移动电话手持机的无线通信设备的语音和数据传输的技术。 根据本公开，无线通信提供混合耦合器，其允许组合语音和数据呼叫以在公共空中接口上传输。 当需要增加发射功率时，无线通信设备通过数据呼叫来优先处理语音呼叫。 在这种情况下，语音呼叫通过语音输出分支和数据输出分支发送，利用每个输出分支链中的功率放大器来实现用于语音传输的更大的总发射功率。 以这种方式，移动用户单元在通常情况下独立地并且同时处理数据和语音呼叫，但是当语音传输需要增加发射功率时，丢弃数据呼叫并组合用于语音传输的语音和数据输出分支。

公开(公告)号：US20070184811A1

公开(公告)日：2007-08-09

申请号：US11352487

申请日：2006-02-09

申请人： Gary Ballantyne

发明人： Gary Ballantyne

IPC分类号： H04B1/16

CPC分类号： H04B1/109 ,  H04W52/0245 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/40

摘要： In general, the disclosure is directed to techniques for combining a high performance receiver and a low power receiver within a wireless communication device (WCD) to reduce power consumption. Upon receiving a signal from a base station, a controller within the WCD detects one or more channel conditions of a radio frequency (RF) environment between the base station and the WCD. The controller selects a high performance receiver to process the received signal when the RF environment is unfavorable and selects a low power receiver to process the received signal when the RF environment is favorable. In this manner, the WCD implements an adaptive receiver that adapts its receiver structure according to RF channel conditions.

摘要翻译： 通常，本公开涉及用于组合无线通信设备（WCD）内的高性能接收机和低功率接收机以降低功耗的技术。 在从基站接收到信号时，WCD内的控制器检测基站和WCD之间的射频（RF）环境的一个或多个信道条件。 当RF环境不利时，控制器选择高性能接收机处理接收信号，并且当RF环境有利时选择低功率接收机来处理接收信号。 以这种方式，WCD实现了根据RF信道条件来适应其接收机结构的自适应接收机。

公开(公告)号：US20070058750A1

公开(公告)日：2007-03-15

申请号：US11228090

申请日：2005-09-15

申请人： Puay Hoe See ,  Gary Ballantyne ,  James Jaffee ,  Gurkanwal Sahota

发明人： Puay Hoe See ,  Gary Ballantyne ,  James Jaffee ,  Gurkanwal Sahota

IPC分类号： H01Q11/12 ,  H03C3/09 ,  H04L25/03

CPC分类号： H04L27/361 ,  H03C3/0966 ,  H03C3/0983

摘要： A phase modulator faithfully reproduces higher frequency modulation using an offset phase-locked loop (OPLL) without passing excessive noise through an increased bandwidth of the OPLL. A quadrature modulator modulates information from a baseband signal onto a passband IF signal and, after a limiter strips away amplitude variations, the OPLL reproduces the phase modulation on an RF signal. The OPLL introduces a group delay that does not vary linearly with the modulation frequency and that consequently causes distortion when uncompensated. A baseband filter filters the amplitude of the baseband signal and introduces a complementary group delay that compensates for the OPLL group delay and results in a combined group delay of the baseband filter, quadrature modulator, limiter and OPLL that remains substantially constant as modulation frequency varies. Compensating for the OPLL group delay reduces distortion and the spectral energy at offset frequencies from the carrier frequency of the RF signal.

摘要翻译： 相位调制器使用偏移锁相环（OPLL）忠实地再现更高的频率调制，而不会通过OPLL的带宽增加而过多的噪声。 正交调制器将信号从基带信号调制到通带IF信号上，并且在限幅器剥离幅度变化之后，OPLL再现RF信号上的相位调制。 OPLL引入了不随调制频率线性变化的群延迟，从而导致无补偿时的失真。 基带滤波器对基带信号的幅度进行滤波，并引入补偿组延迟，补偿OPLL组延迟，并导致基带滤波器，正交调制器，限幅器和OPLL的组合群延迟，其随调制频率变化而保持基本恒定。 补偿OPLL组延迟可以减少偏移频率下的失真和频谱能量与RF信号的载波频率。