公开(公告)号：US20060128325A1

公开(公告)日：2006-06-15

申请号：US11345158

申请日：2006-02-01

申请人： Chris Levesque ,  Jaleh Komaili ,  Jason Millard

发明人： Chris Levesque ,  Jaleh Komaili ,  Jason Millard

IPC分类号： H04B1/04

CPC分类号： H03F1/0238 ,  H03F1/0227 ,  H03F2200/294 ,  H03F2200/372

摘要： A low-noise switching voltage regulator for supplying a voltage to a radio frequency (RF) power amplifier is disclosed. In one embodiment, the invention can be conceptualized as a power amplifier supply circuit, comprising a pair of oppositely polarized semiconductor switches, and a data formatter configured to supply a data stream having a voltage transition on at least every other bit to each of the pair of oppositely polarized semiconductor switches.

公开(公告)号：US08874051B2

公开(公告)日：2014-10-28

申请号：US13310434

申请日：2011-12-02

申请人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

发明人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

IPC分类号： H04B1/04 ,  H03G3/30

CPC分类号： H04L1/0033 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/465 ,  H03G3/3042

摘要： A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.

摘要翻译： 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。

公开(公告)号：US20080232268A1

公开(公告)日：2008-09-25

申请号：US12052991

申请日：2008-03-21

申请人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

发明人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

IPC分类号： H04J1/16

CPC分类号： H04B1/525 ,  H04B1/30

摘要： A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset.

摘要翻译： 使用用于使用全双工操作模式（例如，WCDMA）的便携式手持机的发射信号二阶互调制（IM 2）消除器可控制地减少出现在接收信号中的发射信号引入的IM 2 接收便携式手机的通道。 发送信号IM 2消除器包括延迟估计器和数字信号调节器。 延迟估计器从接收信道接收第一输入，并从发送信道接收第二输入。 延迟估计器产生发送信道在接收信道中引入的IM 2的估计。 在将修改的接收信道信号转发到便携式手持机的基带子系统之前，数字信号调节器去除IM 2的估计。

公开(公告)号：US20080059159A1

公开(公告)日：2008-03-06

申请号：US11932779

申请日：2007-10-31

申请人： Jaleh Komaili ,  Yongbing Wan

发明人： Jaleh Komaili ,  Yongbing Wan

IPC分类号： G10L19/12 ,  G10L21/00

CPC分类号： H04L1/0011 ,  G10L19/24 ,  H04L1/0014 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0059 ,  H04W28/22 ,  H04W88/181 ,  Y10S370/914

摘要： The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission. The appropriate levels of channel coding necessary for reliable transmission are determined by various channel metrics, such as frame erase rate and bit error rate. The determination of the appropriate vocoder rate and level of channel coding for both the uplink and downlink may be determined centrally at the base station, with the vocoder rate and level of channel coding for the uplink being relayed to the mobile station. Alternatively, the appropriate vocoder rate and level of channel coding for the downlink may be determined by the mobile station, and the appropriate vocoder rate and level of channel coding for the uplink may be determined by the base station.

摘要翻译： 本发明包括具有基站和至少一个移动站的时分多址（TDMA）通信系统，每个移动站发送和接收携带数字编码语音的模拟射频信号。 使用声码器编码语音，该声码器以可变的编码速率对语音信号进行采样。 在射频信道遇到高信道干扰的期间，选择具有较低编码率的编码语音信道。 这种低速率编码语音与确保可靠传输所必需的高度信道编码相结合。 当射频信道正在经历低信道干扰水平时，需要较少的信道编码，并且使用具有较高编码率的声码器。 高速率编码语音与确保可靠传输所必需的较低信道编码相结合。 可靠传输所需的适当级别的信道编码由各种信道量度来确定，例如帧擦除率和误码率。 可以在基站中央确定适当的声码器速率和上行链路和下行链路的信道编码级别，其中声码器速率和上行链路的信道编码级别被中继到移动台。 或者，可以由移动台确定下行链路的适当的声码器速率和信道编码级别，并且可以由基站确定上行链路的适当的声码器速率和信道编码级别。

公开(公告)号：US20070116107A1

公开(公告)日：2007-05-24

申请号：US11566006

申请日：2006-12-01

申请人： Jaleh Komaili ,  Yongbing Wan

发明人： Jaleh Komaili ,  Yongbing Wan

IPC分类号： H03H7/30

CPC分类号： H04L1/0011 ,  G10L19/24 ,  H04L1/0014 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0059 ,  H04W28/22 ,  H04W88/181 ,  Y10S370/914

摘要： The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission. The appropriate levels of channel coding necessary for reliable transmission are determined by various channel metrics, such as frame erase rate and bit error rate. The determination of the appropriate vocoder rate and level of channel coding for both the uplink and downlink may be determined centrally at the base station, with the vocoder rate and level of channel coding for the uplink being relayed to the mobile station. Alternatively, the appropriate vocoder rate and level of channel coding for the downlink may be determined by the mobile station, and the appropriate vocoder rate and level of channel coding for the uplink may be determined by the base station.

摘要翻译： 本发明包括具有基站和至少一个移动站的时分多址（TDMA）通信系统，每个移动站发送和接收携带数字编码语音的模拟射频信号。 使用声码器编码语音，该声码器以可变的编码速率对语音信号进行采样。 在射频信道遇到高信道干扰的期间，选择具有较低编码率的编码语音信道。 这种低速率编码语音与确保可靠传输所必需的高度信道编码相结合。 当射频信道正在经历低信道干扰水平时，需要较少的信道编码，并且使用具有较高编码率的声码器。 高速率编码语音与确保可靠传输所必需的较低信道编码相结合。 可靠传输所需的适当级别的信道编码由各种信道量度来确定，例如帧擦除率和误码率。 可以在基站中央确定适当的声码器速率和上行链路和下行链路的信道编码级别，其中声码器速率和上行链路的信道编码级别被中继到移动台。 或者，可以由移动台确定下行链路的适当的声码器速率和信道编码级别，并且可以由基站确定上行链路的适当的声码器速率和信道编码级别。

公开(公告)号：US08565358B2

公开(公告)日：2013-10-22

申请号：US13361247

申请日：2012-01-30

申请人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

发明人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

IPC分类号： H04B17/00

CPC分类号： H04L27/3809 ,  H03G3/3089 ,  H04L27/2647

摘要： A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine.

公开(公告)号：US08374297B2

公开(公告)日：2013-02-12

申请号：US12210229

申请日：2008-09-15

申请人： Jaleh Komaili ,  Thomas Obkircher ,  William J. Domino

发明人： Jaleh Komaili ,  Thomas Obkircher ,  William J. Domino

IPC分类号： H03D1/04 ,  H03D1/06

CPC分类号： H03D3/009 ,  H04L27/3863

摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.

摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。

公开(公告)号：US20100067622A1

公开(公告)日：2010-03-18

申请号：US12210229

申请日：2008-09-15

申请人： Jaleh Komaili ,  Thomas Obkircher ,  William J. Domino

发明人： Jaleh Komaili ,  Thomas Obkircher ,  William J. Domino

IPC分类号： H04L29/14 ,  G01R29/18

CPC分类号： H03D3/009 ,  H04L27/3863

摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.

摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。

公开(公告)号：US07558359B2

公开(公告)日：2009-07-07

申请号：US11566006

申请日：2006-12-01

申请人： Jaleh Komaili ,  Yongbing Wan

发明人： Jaleh Komaili ,  Yongbing Wan

IPC分类号： H04L23/00 ,  H04L7/00 ,  H04B1/38

CPC分类号： H04L1/0011 ,  G10L19/24 ,  H04L1/0014 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0059 ,  H04W28/22 ,  H04W88/181 ,  Y10S370/914

摘要： The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission. The appropriate levels of channel coding necessary for reliable transmission are determined by various channel metrics, such as frame erase rate and bit error rate. The determination of the appropriate vocoder rate and level of channel coding for both the uplink and downlink may be determined centrally at the base station, with the vocoder rate and level of channel coding for the uplink being relayed to the mobile station. Alternatively, the appropriate vocoder rate and level of channel coding for the downlink may be determined by the mobile station, and the appropriate vocoder rate and level of channel coding for the uplink may be determined by the base station.

摘要翻译： 本发明包括具有基站和至少一个移动站的时分多址（TDMA）通信系统，每个移动站发送和接收携带数字编码语音的模拟射频信号。 使用声码器编码语音，该声码器以可变的编码速率对语音信号进行采样。 在射频信道遇到高信道干扰的期间，选择具有较低编码率的编码语音信道。 这种低速率编码语音与确保可靠传输所必需的高度信道编码相结合。 当射频信道正在经历低信道干扰水平时，需要较少的信道编码，并且使用具有较高编码率的声码器。 高速率编码语音与确保可靠传输所必需的较低信道编码相结合。 可靠传输所需的适当级别的信道编码由各种信道量度来确定，例如帧擦除率和误码率。 可以在基站中央确定适当的声码器速率和上行链路和下行链路的信道编码级别，其中声码器速率和上行链路的信道编码级别被中继到移动台。 或者，可以由移动台确定下行链路的适当的声码器速率和信道编码级别，并且可以由基站确定上行链路的适当的声码器速率和信道编码级别。

公开(公告)号：US20050227630A1

公开(公告)日：2005-10-13

申请号：US10820252

申请日：2004-04-08

申请人： Jaleh Komaili ,  Darioush Agahi ,  Ricke Clark

发明人： Jaleh Komaili ,  Darioush Agahi ,  Ricke Clark

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04B1/40 ,  H04B7/26 ,  H04L1/00 ,  H04L25/08 ,  H04L27/00 ,  H04L27/233

CPC分类号： H04B7/2662 ,  H04B7/2675 ,  H04L27/2332 ,  H04L2027/0065 ,  H04W56/0035

摘要： A system for synchronizing a portable transceiver to a network is disclosed. Embodiments of the system for synchronizing a portable transceiver to a network include a crystal oscillator, a frequency synthesizer adapted to receive an output of the crystal oscillator, logic coupled to the crystal oscillator, the logic configured to estimate a frequency error of a received signal; and a first control signal supplied from the logic to the frequency synthesizer, the first control signal configured to adjust the frequency synthesizer to compensate for the error.

摘要翻译： 公开了一种用于将便携式收发器同步到网络的系统。 用于将便携式收发器同步到网络的系统的实施例包括晶体振荡器，适于接收晶体振荡器的输出的频率合成器，耦合到晶体振荡器的逻辑，该逻辑被配置为估计接收信号的频率误差; 以及从逻辑提供给频率合成器的第一控制信号，第一控制信号被配置为调整频率合成器以补偿误差。