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    COMMUNICATION TRANSMISSION IMPAIRMENT EMULATOR
    11.
    发明申请
    COMMUNICATION TRANSMISSION IMPAIRMENT EMULATOR 审中-公开
    通信传输模拟器

    公开(公告)号：WO0209313A3

    公开(公告)日：2002-06-20

    申请号：PCT/US0122882

    申请日：2001-07-20

    Applicant: INTERDIGITAL TECH CORP

    Inventor： NOLAN JAMES ,  KAZAKEVICH LEONID ,  TYRA FRYDERYK ,  REGIS ROBERT ,  SCHREIDER FRED

    IPC: H04B17/00

    CPC classification number: H04B17/0087

    Abstract: A communication transmission emulator digitally emulates a plurality of signal impairments created by the transmission components and communication medium in a typical communication system. A variety of linear and non-linear distortion characteristics are impressed on a baseband signal between transmit and receive modems to effect thorough testing and optimization of modem performance without requiring transmission frequency components and/or communication channel. The communication transmission emulator comprises transmission channel transmit modules, receive modules and communication media modules. Transmit and receive modules accepting or outputting analogue or digital signals. The transmission emulator is configurable to allow a simulation of a single channel communication; a simulation of a full duplex communication; a simulation of a common base station receiver with multiple users transmitting and a simulation of a base station transmitter with multiple users receiving, all configurations with or without the communication media emulator module. The communication media modules simulate multipath signal components and distortions for the chosen medium.

    Abstract translation: 通信传输仿真器在典型的通信系统中对由传输组件和通信介质创建的多个信号损伤进行数字仿真。 在发射和接收调制解调器之间的基带信号上施加各种线性和非线性失真特性，以实现调制解调器性能的全面测试和优化，而不需要传输频率分量和/或通信信道。 通信传输仿真器包括传输信道发射模块，接收模块和通信媒体模块。 发送和接收模块接收或输出模拟或数字信号。 传输仿真器可配置为允许单信道通信的仿真; 全双工通信的仿真; 具有多个用户发送的公共基站接收机的模拟和具有多个用户接收的基站发射机的模拟，所有具有或不具有通信媒体仿真器模块的配置。 通信媒体模块模拟所选介质的多路径信号分量和失真。

    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY
    12.
    发明申请
    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY 审中-公开
    具有可变通信能力的模块化基站

    公开(公告)号：WO9948228A9

    公开(公告)日：2000-07-27

    申请号：PCT/US9905776

    申请日：1999-03-17

    Applicant: INTERDIGITAL TECH CORP ,  POLAN JEFFREY ,  DICK STEPHEN G ,  KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  REGIS ROBERT T ,  TURNER RICHARD

    Inventor： POLAN JEFFREY ,  DICK STEPHEN G ,  KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  REGIS ROBERT T ,  TURNER RICHARD

    IPC: H04B7/26 ,  H04W88/08 ,  H04Q7/36

    CPC classification number: H04W88/08 ,  H04B7/2628 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/449

    Abstract: The present invention provides a base station architecture that is modular in configuration, lowering the initial cost of implementing a new CDMA telecommunication system for a defined geographical region while allowing for future capacity. The scalable architecture is assembled from a digital base station unit that is configured to support a plurality of simultaneous wireless calls connecting to a conventional public switched telephone network. For initial startup, two base station units are deployed for redundancy in case of a single failure. Additional base station units may be added when the need arises for extra traffic capacity. If sectorization is required, the base station units may be directionally oriented. Coupled to and remote from each base station unit are two amplified antenna modules that contain an omni-directional or an external directional antenna, a high power RF amplifier for transmitted frequencies and a low noise amplifier for received frequencies. A separate power supply module capable of supporting two base station units provides continued service in the event of a mains power outage.

    Abstract translation: 本发明提供了一种模块化配置的基站架构，降低了为所定义的地理区域实施新的CDMA电信系统的初始成本，同时允许将来的容量。 可扩展架构由数字基站单元组合，数字基站单元被配置为支持连接到常规公共交换电话网络的多个同时无线呼叫。 对于初始启动，在单个故障的情况下，部署了两个基站单元以实现冗余。 当需要额外的流量时，可以添加额外的基站单元。 如果需要扇区化，则基站单元可以是定向的。 耦合到每个基站单元并且远离每个基站单元的两个放大天线模块包含全向或外部定向天线，用于发射频率的高功率RF放大器和用于接收频率的低噪声放大器。 能够支持两个基站单元的单独的电源模块在主电源中断的情况下提供持续的服务。

    PRECISE SLEEP TIMER USING A LOW-COST AND LOW-ACCURACY CLOCK
    13.
    发明申请
    PRECISE SLEEP TIMER USING A LOW-COST AND LOW-ACCURACY CLOCK 审中-公开
    精密休眠定时器使用低成本和低精度时钟

    公开(公告)号：WO2005062855A3

    公开(公告)日：2007-06-28

    申请号：PCT/US2004042951

    申请日：2004-12-22

    Applicant: INTERDIGITAL TECH CORP ,  BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

    Inventor： BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

    IPC: H04B1/16 ,  G08C17/00 ,  H04B1/00 ,  H04B1/38 ,  H04B7/005 ,  H04B7/01 ,  H04B7/015 ,  H04W52/28

    CPC classification number: H04W52/288 ,  H04W52/0216 ,  H04W52/0248 ,  H04W52/0293 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/24

    Abstract: A wireless transmit/receive unit (WTRLJ) 11 uses an oscillator providing accuracy for synchronized communications parameters in an active mode (Fig. 1 , WTRLJ 11), and operates at reduced power during a discontinuous reception (DRX) mode (Fig. 1 WTRU 12). A real time clock (RTC) 28 is used as the frequency standard during the reduced power operation, and a frequency adjustment is effected while the RTC 28 is used as the frequency standard. By effecting the frequency adjustment, the RTC 28 is able to be used as the frequency standard for substantial time periods, thereby reducing power consumption of the WTRU 12 during the DRX mode.

    Abstract translation: 无线发射/接收单元（WTRLJ）11使用振荡器提供在活动模式下的同步通信参数的精度（图1，WTRLJ 11），并且在不连续接收（DRX）模式期间以降低的功率工作（图1 WTRU 12）。 使用实时时钟（RTC）28作为降频操作期间的频率标准，并且在使用RTC28作为频率标准时进行频率调整。 通过进行频率调整，RTC28能够被用作相当长的时间段的频率标准，从而在DRX模式期间降低了WTRU 12的功耗。

    METHOD AND SYSTEM FOR COMPENSATING FOR PHASE VARIATIONS INTERMITTENTLY INTRODUCED INTO COMMUNICATION SIGNALS BY ENABLING OR DISABLING AN AMPLIFIER
    15.
    发明申请
    METHOD AND SYSTEM FOR COMPENSATING FOR PHASE VARIATIONS INTERMITTENTLY INTRODUCED INTO COMMUNICATION SIGNALS BY ENABLING OR DISABLING AN AMPLIFIER 审中-公开
    通过启用或禁用放大器来互相介入通信信号的相位变化补偿方法和系统

    公开(公告)号：WO2005002242A2

    公开(公告)日：2005-01-06

    申请号：PCT/US2004013882

    申请日：2004-05-05

    Applicant: INTERDIGITAL TECH CORP ,  DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

    Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

    IPC: H03G3/30 ,  H04B1/16 ,  H04Q

    CPC classification number: H03G3/3052

    Abstract: A communication system including an amplifier, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The amplifier receives a communication signal. If the amplifier is enabled, the amplifier amplifies the communication signal and outputs the amplified communication signal to the receiver. If the amplifier is disabled, the amplifier passes the communication signal to the receiver without amplifying it. The receiver outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to the insertion phase variation compensation module which counteracts the effects of a phase offset intermittently introduced into the communication signal when the amplifier is enabled or disabled.

    Abstract translation: 一种包括放大器，接收器，模数转换器（ADC）和插入相位变化补偿模块的通信系统。 放大器接收通信信号。 如果放大器使能，放大器放大通信信号，并将放大的通信信号输出到接收器。 如果放大器被禁用，放大器将通信信号传递到接收器而不进行放大。 接收器向ADC输出模拟复合信号。 ADC将数字复合信号输出到插入相位变化补偿模块，该模块抵消当放大器使能或禁用时间断地引入通信信号的相位偏移的影响。

    MULTIUSER DETECTION OF DIFFERING DATA RATE SIGNALS
    16.
    发明申请
    MULTIUSER DETECTION OF DIFFERING DATA RATE SIGNALS 审中-公开
    多重检测不同数据速率信号

    公开(公告)号：WO2004079717A2

    公开(公告)日：2004-09-16

    申请号：PCT/US2004006231

    申请日：2004-03-01

    Applicant: INTERDIGITAL TECH CORP ,  REZNIK ALEXANDER ,  ZEIRA ARIELA ,  OZLUTURK FATIH ,  KAZAKEVICH LEONID

    Inventor： REZNIK ALEXANDER ,  ZEIRA ARIELA ,  OZLUTURK FATIH ,  KAZAKEVICH LEONID

    IPC: G10L

    CPC classification number: H04B1/7103 ,  H04B1/71055 ,  H04B2001/71077 ,  H04B2201/70705

    Abstract: A first detector receives a received signal and extracts the data signals from the received signal. A hard decision converter converts soft symbols outputted by the first detector into hard symbols. An interference canceller extracts the voice signals from the received signal. A second detector is connected to the output of the interference canceller, and extracts the individual voice signals. The second detector is a different detector type than the first detector.

    Abstract translation: 第一检测器接收接收信号并从接收信号中提取数据信号。 硬判决转换器将由第一检测器输出的软符号转换成硬符号。 干扰消除器从接收到的信号中提取语音信号。 第二检测器连接到干扰消除器的输出，并提取各个声音信号。 第二检测器是与第一检测器不同的检测器类型。

    METHOD AND SYSTEM FOR IMPLEMENTING SMART ANTENNAS AND DIVERSITY TECHNIQUES
    18.
    发明申请
    METHOD AND SYSTEM FOR IMPLEMENTING SMART ANTENNAS AND DIVERSITY TECHNIQUES 审中-公开
    实现智能天线和多样性技术的方法和系统

    公开(公告)号：WO03077356A2

    公开(公告)日：2003-09-18

    申请号：PCT/US0306464

    申请日：2003-03-04

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  KLAHN GERARD ,  OZLUTURK FATIH

    IPC: H04B7/08 ,  H01Q

    CPC classification number: H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

    Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

    Abstract translation: 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 天线选择对于上行链路和下行链路具有更大的灵活性和适用性，其中优先给予接收更好质量信号的天线。 在每个时隙期间进行测量，以确定要以更好的质量信号给予天线的加权。 提供技术和装置以在从时隙到单个符号的间隔范围内进行测量，例如，选择最佳信号，本文所描述的技术可以被单独使用，并且在一些情况下被组合以在效率上接收额外的益处。

    TIME SLOT STRUCTURE AND AUTOMATIC GAIN CONTROL METHOD FOR A WIRELESS COMMUNICATION SYSTEM
    19.
    发明申请
    TIME SLOT STRUCTURE AND AUTOMATIC GAIN CONTROL METHOD FOR A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无缝通信系统的时隙结构和自动增益控制方法

    公开(公告)号：WO0232018A3

    公开(公告)日：2002-08-29

    申请号：PCT/US0131612

    申请日：2001-10-10

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OLESEN ROBERT L ,  AXNESS TIMOTHY A ,  KAZAKEVICH LEONID

    IPC: H04L5/16 ,  H03G3/20 ,  H03M1/18 ,  H04B1/16 ,  H04B1/707 ,  H04B7/005 ,  H04B17/00 ,  H04J3/00 ,  H04L5/14 ,  H04B7/26

    CPC classification number: H04W52/52 ,  H03G3/3078 ,  H03M1/185 ,  H04B17/318 ,  H04L5/1484

    Abstract: A method and system for automatic gain control (AGC) in a TDD communication system, wherein each time slot of the communication signal contains a preamble in binary phase shift keying (BPSK) format, located at the beginning of the time slot. The channel estimation by the receiver is improved since the preamble allows AGC to quickly estimate the signal strength and adjust the gain accordingly. This permits all data symbols within the data burst, which follows the preamble, to be correctly received, and results in a midamble channel estimate that is much more accurate. It also allows the AGC circuit within the TDD receiver to be greatly simplified.

    Abstract translation: 一种用于TDD通信系统中的自动增益控制（AGC）的方法和系统，其中通信信号的每个时隙包含位于时隙开头的二进制相移键控（BPSK）格式的前导码。 由于前同步码允许AGC快速估计信号强度并相应地调整增益，所以改善了接收机的信道估计。 这允许正确地接收跟随前导码的数据突发内的所有数据符号，并且导致更准确的中间码信道估计。 它还允许TDD接收机内的AGC电路大大简化。

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