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61. 发明授权

US07085255B2 Selectively activated AGC signal measurement unit 失效
公开(公告)号：US07085255B2
公开(公告)日：2006-08-01
申请号：US09872038
申请日：2001-06-01
申请人： Alexander Jacques , Leonid Kazakevich , Avi Silverberg
发明人： Alexander Jacques , Leonid Kazakevich , Avi Silverberg
IPC分类号： H04B7/212
CPC分类号： H04W52/52 , H03G3/3047
摘要： In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.

62. 发明申请

US20060050810A1 Hybrid transmitter architecture having high efficiency and large dynamic range 审中-公开
标题翻译：混合发射机架构具有高效率和大动态范围
公开(公告)号：US20060050810A1
公开(公告)日：2006-03-09
申请号：US11192523
申请日：2005-07-29
申请人： Tanbir Haque , Leonid Kazakevich
发明人： Tanbir Haque , Leonid Kazakevich
IPC分类号： H04L25/49 , H04L27/20
CPC分类号： H03F3/24 , H03F1/34 , H03F2200/336 , H03F2200/57 , H04L27/364
摘要： An adaptive hybrid transmitter architecture for use in a communication unit which dynamically adapts to maximize efficiency, delivers a large dynamic range and provides good distortion performance depending upon the required output power of the transmitter. In the upper portion of the operating range, the hybrid transmitter operates in a sigma delta mode including a noise shaping feedback loop. In the middle portion of the operating range, the transmitter operates in a Cartesian correction mode for error correction. At the lower portion of the operating range, the amplifier is operated in a linear mode, without feedback.
摘要翻译：用于通信单元的自适应混合发射机架构，其动态地适应最大化效率，提供大的动态范围，并且根据发射机的所需输出功率提供良好的失真性能。在操作范围的上部，混合发射机以包括噪声整形反馈回路的Σ-Δ模式工作。在操作范围的中间部分，发射机以笛卡尔校正模式操作，用于纠错。在工作范围的较低部分，放大器工作在线性模式，无反馈。

63. 发明授权

US07010282B2 Dynamic bias for RF power amplifiers 失效
标题翻译：射频功率放大器的动态偏置
公开(公告)号：US07010282B2
公开(公告)日：2006-03-07
申请号：US10722941
申请日：2003-11-26
申请人： Leonid Kazakevich , Patrick Cabrol
发明人： Leonid Kazakevich , Patrick Cabrol
IPC分类号： H04B1/04
CPC分类号： H03F1/0222 , H03F1/02 , H03F1/0205 , H03F1/0233 , H03F1/0261 , H03F1/0266 , H03F1/30 , H03F3/24 , H03F2200/451 , H03F2200/474 , H03G3/3042 , H03G3/3084 , H04B2001/0416 , H04B2001/045 , H04W52/08 , H04W52/52
摘要： A subscriber unit and method for wireless communication that dynamically adjusts RF amplifier operating bias for the subscriber unit's transmitter in response to a power control signal. The invention provides high-efficiency RF power amplification for applications where the available power source is limited. The invention uses a power control signal resident in wireless communication system architectures with a detector and voltage to current converter to arrive at a dynamic amplifier operating bias.
摘要翻译：一种用于无线通信的用户单元和方法，其响应于功率控制信号动态地调整用户单元的发射机的RF放大器工作偏置。本发明为可用电源有限的应用提供了高效的RF功率放大。本发明使用驻留在具有检测器和电压 - 电流转换器的无线通信系统架构中的功率控制信号来获得动态放大器工作偏置。

64. 发明申请

US20050190866A1 Digital automatic gain control 失效
标题翻译：数字自动增益控制
公开(公告)号：US20050190866A1
公开(公告)日：2005-09-01
申请号：US11113603
申请日：2005-04-25
申请人： Leonid Kazakevich , Fatih Ozluturk
发明人： Leonid Kazakevich , Fatih Ozluturk
IPC分类号： H03G3/30 , H03G7/00 , H04B17/00
CPC分类号： H03G7/001 , H03G3/3052
摘要： An automatic gain control system prevents input overload by precisely controlling the input level of a received, digitally modulated signal without variable gain amplification. Limiting amplification in conjunction with a logarithmic detection splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.
摘要翻译：自动增益控制系统通过精确地控制接收到的数字调制信号的输入电平，从而防止输入过载，而无需增益放大。限制放大结合对数检测将输入信号路径分成两部分，为下游数字信号处理提供单独的相位和幅度信息，其中单独的相位和幅度信息被处理而没有可变增益伪像。分离的相位信息还可以被分成I和Q信号。

65. 发明申请

US20050020297A1 Multi-mode radio with interference cancellation circuit 有权
标题翻译：具有干扰消除电路的多模无线电
公开(公告)号：US20050020297A1
公开(公告)日：2005-01-27
申请号：US10852640
申请日：2004-05-24
申请人： Timothy Axness , Leonid Kazakevich
发明人： Timothy Axness , Leonid Kazakevich
IPC分类号： H04B1/00 , H04B1/10 , H04B1/44 , H04Q20060101
CPC分类号： H04B1/0057 , H04B1/525
摘要： A multi-mode wireless transmit/receive unit (WTRU) includes at least one antenna, first and second communication mode receivers and a first communication mode transmitter. The first and second receivers simultaneously receive signals from the antenna. The first transmitter generates and sends a first type of signal to the antenna while, at the same time, the second receiver receives a second type of signal from the antenna. In a preferred embodiment, the WTRU further includes a vector multiplier configured to reduce or eliminate interference of signals received by the second receiver, the interference being caused by the first transmitter. The vector multiplier adjusts the phase and amplitude of noise (i.e., spurious in-band noise) measured by the second receiver. The WTRU may further include a second communication mode transmitter configured to generate and send a second type of signal to the antenna.
摘要翻译：多模式无线发射/接收单元（WTRU）包括至少一个天线，第一和第二通信模式接收机和第一通信模式发射机。第一和第二接收机同时从天线接收信号。第一发射机产生并向天线发送第一类型的信号，同时第二接收机从天线接收第二类型的信号。在优选实施例中，WTRU还包括被配置为减少或消除由第二接收机接收的信号的干扰的矢量乘法器，该干扰由第一发射机引起。矢量乘法器调节由第二接收机测量的噪声的相位和幅度（即，杂带带内噪声）。 WTRU可以进一步包括第二通信模式发射机，其被配置为产生并向天线发送第二类型的信号。

66. 发明授权

US08553746B2 Method and system for code reuse and capacity enhancement using null steering 有权
公开(公告)号：US08553746B2
公开(公告)日：2013-10-08
申请号：US13438635
申请日：2012-04-03
申请人： Nadar Bolourchi , Leonid Kazakevich , Rui Yang
发明人： Nadar Bolourchi , Leonid Kazakevich , Rui Yang
IPC分类号： H04B1/00
CPC分类号： H01Q3/2611 , H04B7/0617 , H04B7/0669 , H04J13/0077 , H04W88/08
摘要： The number of users and data capacity of wireless systems are increased by employing apparatus and method for increasing the number of spreading codes available in the system by providing a mechanism to reuse the already allocated spreading code or use the codes that may correlate to those already being used within the same sector/cell. This, in return, provides capacity improvement proportional to the number of added base station (BS) antennas for each cell. An antenna null steering technique for code allocation maintains the cross correlation properties of the codes only for the desired user and to obtain a gain in capacity improvement.

67. 发明授权

US08532039B2 Method for a radio frequency (RF) sampling apparatus with arrays of time interleaved samplers and scenario based dynamic resource allocation 有权
标题翻译：具有时间交错采样器阵列和基于场景的动态资源分配的射频（RF）采样装置的方法
公开(公告)号：US08532039B2
公开(公告)日：2013-09-10
申请号：US12716514
申请日：2010-03-03
申请人： Tanbir Haque , Leonid Kazakevich , Scott M. Newton
发明人： Tanbir Haque , Leonid Kazakevich , Scott M. Newton
IPC分类号： H04J1/00 , H04W4/00 , H04B7/212
CPC分类号： H04W72/085 , H03M1/1215 , H04B1/28
摘要： A method and apparatus for dynamic resource allocation of an RF sampling system based on a signal quality measurement determined by generating a plurality of time-interleaved samples from a received radio frequency (RF) signal and combining the plurality of time-interleaved samples to generate the signal quality.
摘要翻译：一种用于基于通过从所接收的射频（RF）信号生成多个时间交织采样而确定的信号质量测量的RF采样系统的动态资源分配的方法和装置，并且组合所述多个时间交织样本以产生信号质量。

68. 发明授权

US07664201B2 Digital automatic gain control 失效
标题翻译：数字自动增益控制
公开(公告)号：US07664201B2
公开(公告)日：2010-02-16
申请号：US11113603
申请日：2005-04-25
申请人： Leonid Kazakevich , Fatih Ozluturk
发明人： Leonid Kazakevich , Fatih Ozluturk
IPC分类号： H04K1/02
CPC分类号： H03G7/001 , H03G3/3052
摘要： An automatic gain control system prevents input overload by precisely controlling the input level of a received, digitally modulated signal without variable gain amplification. Limiting amplification in conjunction with a logarithmic detection splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.
摘要翻译：自动增益控制系统通过精确地控制接收到的数字调制信号的输入电平，从而防止输入过载，而无需增益放大。限制放大结合对数检测将输入信号路径分成两部分，为下游数字信号处理提供单独的相位和幅度信息，其中单独的相位和幅度信息被处理而没有可变增益伪像。分离的相位信息还可以被分成I和Q信号。

69. 发明申请

US20090074108A1 METHOD AND SYSTEM FOR ADJUSTING THE AMPLITUDE AND PHASE CHARACTERISTICS OF REAL AND IMAGINARY SIGNAL COMPONENTS OF COMPLEX SIGNALS PROCESSED BY AN ANALOG RADIO TRANSMITTER 失效
标题翻译：用于调节由模拟无线电发射机处理的复杂信号的实际和图像信号分量的幅度和相位特性的方法和系统
公开(公告)号：US20090074108A1
公开(公告)日：2009-03-19
申请号：US12275806
申请日：2008-11-21
申请人： Alpaslan Demir , Leonid Kazakevich , Kenneth P. Kearney
发明人： Alpaslan Demir , Leonid Kazakevich , Kenneth P. Kearney
IPC分类号： H04B1/00
CPC分类号： H03C3/406 , H04B1/30
摘要： A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be determined in response to detecting a significant temperature change in the transmitter. Corresponding amplitude and phase adjustment signals having levels that correspond to the compensation values are provided to respective amplitude and phase imbalance compensation modules to adjust the amplitude and phase characteristics of at least one of the real and imaginary signal components.
摘要翻译：用于确定用于调整由模拟无线电发射机处理的复信号的实信号和虚信号分量的幅度和相位特性的幅度和相位补偿值的方法和系统。可以响应于检测到发射器中的明显的温度变化来确定补偿值。具有对应于补偿值的电平的对应幅度和相位调整信号被提供给相应的幅度和相位不平衡补偿模块，以调整实信号分量和虚信号分量中的至少一个的振幅和相位特性。

70. 发明授权

US07502600B2 Dynamic bias for RF power amplifiers 失效
标题翻译：射频功率放大器的动态偏置
公开(公告)号：US07502600B2
公开(公告)日：2009-03-10
申请号：US11368802
申请日：2006-03-06
申请人： Leonid Kazakevich , Patrick Cabrol
发明人： Leonid Kazakevich , Patrick Cabrol
IPC分类号： H04B1/04
CPC分类号： H03F1/0222 , H03F1/02 , H03F1/0205 , H03F1/0233 , H03F1/0261 , H03F1/0266 , H03F1/30 , H03F3/24 , H03F2200/451 , H03F2200/474 , H03G3/3042 , H03G3/3084 , H04B2001/0416 , H04B2001/045 , H04W52/08 , H04W52/52
摘要： A method for wireless communication that dynamically adjusts RF amplifier operating bias for the subscriber unit's transmitter in response to a power control signal. The invention provides high-efficiency RF power amplification for applications where the available power source is limited. The invention uses a power control signal resident in wireless communication system architectures with a detector and voltage to current converter to arrive at a dynamic amplifier operating bias.
摘要翻译：一种用于无线通信的方法，用于响应于功率控制信号动态地调整用户单元发射机的RF放大器工作偏置。本发明为可用电源有限的应用提供了高效的RF功率放大。本发明使用驻留在具有检测器和电压 - 电流转换器的无线通信系统架构中的功率控制信号来获得动态放大器工作偏置。

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