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    • 4. 发明申请
    • LMS Adaptive Filter for Digital Cancellation of Second Order Inter-Modulation Due to Transmitter Leakage
    • LMS自适应滤波器,用于由于发射机泄漏而进行二阶互调的数字消除
    • US20080232268A1
    • 2008-09-25
    • US12052991
    • 2008-03-21
    • Masoud KahriziJaleh KomailiJohn E. Vasa
    • Masoud KahriziJaleh KomailiJohn E. Vasa
    • H04J1/16
    • H04B1/525H04B1/30
    • 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.
    • 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。
    • 6. 发明申请
    • Closed-Loop Adaptive Power Control For Adjusting Bandwidth In A Mobile Handset Transmitter
    • 用于在移动手机发射机中调节带宽的闭环自适应功率控制
    • US20110021237A1
    • 2011-01-27
    • US12865687
    • 2009-02-07
    • Yongqiang HeJohn E. VasaMasoud Kahrizi
    • Yongqiang HeJohn E. VasaMasoud Kahrizi
    • H04B7/00
    • H04W52/52H04W52/226H04W52/367
    • A mobile handset is arranged with an adaptive power controller to controllably adjust transmit power. The adaptive power controller is coupled to a power amplifier module to form a closed feedback loop. The adaptive power control module includes a first shifter, a first sealer, an accumulator and a hold element. The first shifter and first sealer receive respective bandwidth control signals and an error signal. The first shifter and first sealer generate a modified error signal that is forwarded to and filtered by the accumulator and the hold element to generate a power control signal. The power control signal, which is generated the radio frequency subsystem of the handset can quickly and accurately track rapid changes in transmit power.
    • 移动手机配置有自适应功率控制器以可控地调节发射功率。 自适应功率控制器耦合到功率放大器模块以形成闭合反馈回路。 自适应功率控制模块包括第一变速器,第一闭合器,蓄能器和保持元件。 第一移位器和第一密封器接收相应的带宽控制信号和误差信号。 第一移位器和第一密封器产生经过累加器和保持元件转发和滤波的修正误差信号,以产生功率控制信号。 产生手机射频子系统的功率控制信号可以快速,准确地跟踪发射功率的快速变化。
    • 8. 发明授权
    • Closed-loop adaptive power control for adjusting bandwidth in a mobile handset transmitter
    • 用于调整移动手持机发射机中的带宽的闭环自适应功率控制
    • US08606311B2
    • 2013-12-10
    • US12865687
    • 2009-02-07
    • Yongqiang HeJohn E. VasaMasoud Kahrizi
    • Yongqiang HeJohn E. VasaMasoud Kahrizi
    • H04B7/00
    • H04W52/52H04W52/226H04W52/367
    • A mobile handset is arranged with an adaptive power controller to controllably adjust transmit power. The adaptive power controller is coupled to a power amplifier module to form a closed feedback loop. The adaptive power control module includes a first shifter, a first sealer, an accumulator and a hold element. The first shifter and first sealer receive respective bandwidth control signals and an error signal. The first shifter and first sealer generate a modified error signal that is forwarded to and filtered by the accumulator and the hold element to generate a power control signal. The power control signal, which is generated the radio frequency subsystem of the handset can quickly and accurately track rapid changes in transmit power.
    • 移动手机配置有自适应功率控制器以可控地调节发射功率。 自适应功率控制器耦合到功率放大器模块以形成闭合反馈回路。 自适应功率控制模块包括第一变速器,第一闭合器,蓄能器和保持元件。 第一移位器和第一密封器接收相应的带宽控制信号和误差信号。 第一移位器和第一密封器产生经过累加器和保持元件转发和滤波的修正误差信号,以产生功率控制信号。 产生手机射频子系统的功率控制信号可以快速,准确地跟踪发射功率的快速变化。
    • 9. 发明授权
    • LMS adaptive filter for digital cancellation of second order inter-modulation due to transmitter leakage
    • LMS自适应滤波器,用于由于发射机泄漏而导致的二阶互调的数字消除
    • US08050201B2
    • 2011-11-01
    • US12052991
    • 2008-03-21
    • Masoud KahriziJaleh KomailiJohn E. Vasa
    • Masoud KahriziJaleh KomailiJohn E. Vasa
    • H04B7/005
    • H04B1/525H04B1/30
    • 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.
    • 使用用于使用全双工操作模式(例如,WCDMA)的便携式手机的发送信号二阶互调制(IM2)消除器可控制地减少出现在接收信道中的接收信号中的发送信号引入的IM2 的便携式手机。 发送信号IM2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IM2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IM2的估计。
    • 10. 发明授权
    • Self-testing transceiver architecture and related method
    • 自检收发器架构及相关方法
    • US08862064B2
    • 2014-10-14
    • US12924353
    • 2010-09-24
    • Masoud KahriziZhimin ZhouHooman Darabi
    • Masoud KahriziZhimin ZhouHooman Darabi
    • H04B17/00
    • H04B17/0027H04B17/13H04B17/19
    • A self-testing transceiver comprises a receiver, and a transmitter including a power amplifier (PA) and a plurality of transmitter pre-PA stages. The plurality of transmitter pre-PA stages are configured to generate a communication signal at a receive frequency of the transceiver and the receiver is configured to process another communication signal at a transmit frequency of the transceiver, thereby enabling transceiver self-testing. A method for use by a transceiver for self-testing comprises generating a first communication signal at a transmit frequency of the transceiver by a transmitter of the transceiver, processing the first communication signal by a receiver of the transceiver, generating a second communication signal at a receive frequency of the transceiver by the transmitter, and processing the second communication signal by the receiver. The described generating and processing of the first and second communication signals resulting in self-testing by the transceiver.
    • 自检收发器包括接收器和包括功率放大器(PA)和多个发射器预PA级的发射器。 多个发射器预PA级被配置为以收发器的接收频率生成通信信号,并且接收器被配置为以收发器的发射频率处理另一通信信号,由此使能收发器自检。 收发信机用于自检的方法包括:通过收发信机的发射机在收发信机的发射频率下生成第一通信信号,由收发信机的接收机处理第一通信信号,产生第二通信信号 由发射机接收收发信机的频率,并由接收机处理第二通信信号。 所描述的第一和第二通信信号的产生和处理导致收发器的自检。