公开(公告)号：US07302245B2

公开(公告)日：2007-11-27

申请号：US11327864

申请日：2006-01-09

申请人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

IPC分类号： H04Q7/20

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

摘要翻译： 在时分双工（TDD）系统中，可以根据某些信息的可用性（例如信号干扰比）来以各种形式实现适用于基站处的自动增益控制器（AGC）的可靠的初始化方案 （SIR），扩散因子等参数。 实现了用于一个或多个时隙的增益可调放大器的初始控制字的更准确的估计。 该方案适用于TDD系统的每个时隙的AGC初始化，但也适用于其他传输系统，但不限于此。

公开(公告)号：US06873833B2

公开(公告)日：2005-03-29

申请号：US10686055

申请日：2003-10-14

申请人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

IPC分类号： H04B17/40 ,  H03G3/30 ,  H04L5/14 ,  H04Q7/20

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

摘要翻译： 在时分双工（TDD）系统中，可以根据某些信息的可用性（例如信号干扰比）来以各种形式实现适用于基站处的自动增益控制器（AGC）的可靠的初始化方案 （SIR），扩散因子等参数。 实现了用于一个或多个时隙的增益可调放大器的初始控制字的更准确的估计。 该方案适用于TDD系统的每个时隙的AGC初始化，但也适用于其他传输系统，但不限于此。

公开(公告)号：US07039378B2

公开(公告)日：2006-05-02

申请号：US11041784

申请日：2005-01-24

申请人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

IPC分类号： H04Q7/20

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

摘要翻译： 在时分双工（TDD）系统中，可以根据某些信息的可用性（例如信号干扰比）来以各种形式实现适用于基站处的自动增益控制器（AGC）的可靠的初始化方案 （SIR），扩散因子等参数。 实现了用于一个或多个时隙的增益可调放大器的初始控制字的更准确的估计。 该方案适用于TDD系统的每个时隙的AGC初始化，但也适用于其他传输系统，但不限于此。

公开(公告)号：US20070171962A1

公开(公告)日：2007-07-26

申请号：US11731617

申请日：2007-03-30

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.

摘要翻译： 通过采用用于增加系统中可用的扩展码数目的装置和方法来提高无线系统的用户数量和数据容量，提供一种机制来重用已经分配的扩展码或使用可能与已经分配的扩展码相关的代码 在相同的扇区/单元格内使用。 这反过来提供了与每个小区的增加的基站（BS）天线的数量成比例的能力提高。 用于代码分配的天线零点转向技术仅针对期望的用户维护代码的互相关性质，并获得容量改进的增益。

公开(公告)号：US07130662B2

公开(公告)日：2006-10-31

申请号：US10331073

申请日：2002-12-27

申请人： Leonid Kazakevich ,  Rui Yang ,  Alexander Reznik

发明人： Leonid Kazakevich ,  Rui Yang ,  Alexander Reznik

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： H04B7/04

摘要： A “smart antenna” method and system for use in cellular networks where the wireless transmit receive unit and/or the base station utilize multi-user detection (MUD). The interference to and from other users is taken into consideration to maximize the desired signal while eliminating or reducing interfering signals, thereby increasing overall system capacity.

摘要翻译： 一种在无线发射接收单元和/或基站利用多用户检测（MUD）的蜂窝网络中使用的“智能天线”方法和系统。 考虑到来自其他用户的干扰以最大化期望的信号，同时消除或减少干扰信号，从而增加整个系统容量。

公开(公告)号：US20080240259A1

公开(公告)日：2008-10-02

申请号：US12135288

申请日：2008-06-09

申请人： Leonid Kazakevich ,  Rui Yang

发明人： Leonid Kazakevich ,  Rui Yang

IPC分类号： H04B14/04

CPC分类号： H03G7/06 ,  H03G3/001 ,  H03M1/1235

摘要： An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.

摘要翻译： 模拟/数字增益控制装置避免了与闭环AGC电路的性质相关的一些要求，并且不需要很多困难就可以满足剩余的要求，使用模数转换方法，通过压缩有效的ADC位数来增加有效的ADC位数 基带输入模拟信号使用对数电路。 在将压缩的模拟信号转换为数字信号之后，使用数字反对数处理或查找表（LUT）将数字信号扩展回原始的线性刻度。 由于反日志功能的性质，反日志进程输出的字大小大于输入字大小。 为了减小数字信号的字大小，可以应用开环归一化技术。

公开(公告)号：US20080070536A1

公开(公告)日：2008-03-20

申请号：US11944852

申请日：2007-11-26

申请人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

IPC分类号： H03G3/30 ,  H04L5/14

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

摘要翻译： 在时分双工（TDD）系统中，可以根据某些信息的可用性（例如信号干扰比）来以各种形式实现适用于基站处的自动增益控制器（AGC）的可靠的初始化方案 （SIR），扩散因子等参数。 实现了用于一个或多个时隙的增益可调放大器的初始控制字的更准确的估计。 该方案适用于TDD系统的每个时隙的AGC初始化，但也适用于其他传输系统，但不限于此。

公开(公告)号：US20070049349A1

公开(公告)日：2007-03-01

申请号：US11590966

申请日：2006-10-31

申请人： Leonid Kazakevich ,  Rui Yang ,  Alexander Reznik

发明人： Leonid Kazakevich ,  Rui Yang ,  Alexander Reznik

IPC分类号： H04M1/00

CPC分类号： H04B7/04

摘要： A “smart antenna” method and system for use in cellular networks where the wireless transmit receive unit and/or the base station utilize multi-user detection (MUD). The interference to and from other users is taken into consideration to maximize the desired signal while eliminating or reducing interfering signals, thereby increasing overall system capacity.

摘要翻译： 一种在无线发射接收单元和/或基站利用多用户检测（MUD）的蜂窝网络中使用的“智能天线”方法和系统。 考虑到来自其他用户的干扰以最大化期望的信号，同时消除或减少干扰信号，从而增加整个系统容量。

公开(公告)号：US20060111061A1

公开(公告)日：2006-05-25

申请号：US11327864

申请日：2006-01-09

申请人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

IPC分类号： H01Q11/12

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

公开(公告)号：US20050135515A1

公开(公告)日：2005-06-23

申请号：US11041784

申请日：2005-01-24

申请人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

发明人： Rui Yang ,  Donald Grieco ,  Leonid Kazakevich

IPC分类号： H04B17/40 ,  H03G3/30 ,  H04L5/14 ,  H04L27/08

CPC分类号： H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

摘要： In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.