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    DIGITAL BASEBAND RECEIVER INCLUDING A HIGH PASS FILTER COMPENSATION MODULE FOR SUPPRESSING GROUP DELAY VARIATION DISTORTION INCURRED DUE TO ANALOG HIGH PASS FILTER DEFICIENCIES
    3.
    发明申请
    DIGITAL BASEBAND RECEIVER INCLUDING A HIGH PASS FILTER COMPENSATION MODULE FOR SUPPRESSING GROUP DELAY VARIATION DISTORTION INCURRED DUE TO ANALOG HIGH PASS FILTER DEFICIENCIES 审中-公开
    数字基带接收器，包括高通滤波器补偿模块，用于抑制模拟高通滤波器缺陷引起的组延迟变差失真

    公开(公告)号：WO2005006567A3

    公开(公告)日：2006-03-30

    申请号：PCT/US2004015800

    申请日：2004-05-20

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

    Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

    IPC: H03D3/00

    CPC classification number: H03D3/009

    Abstract: A digital baseband (DBB) radio frequency (RF) receiver (105) includes a digital high pass filter compensation (HPFC) module (205) used to suppress group delay variation distortion caused by using low cost analog high pass filters (HPFO) (175A, 175B, 185A, 185B) in the receiver. The digital HPFC module (205) reduces a cutoff frequency, established by the HPFs for the real and imaginary signal component frequency domain responses by providing a first compensation signal having a first predetermined value (K1). The digital HPFC module adjusts the gain of the high pass response of the real and imaginary signal component frequency domains by providing a second compensation signal having a second predetermined value (K2).

    Abstract translation: 数字基带（RFB）射频（RF）接收机（105）包括数字高通滤波器补偿（HPFC）模块（205），用于抑制使用低成本模拟高通滤波器（HPFO）（175A）引起的群延迟变化失真 ，175B，185A，185B）。 数字HPFC模块（205）通过提供具有第一预定值（K1）的第一补偿信号来减少由HPF为实信号分量和虚信号分量频域响应建立的截止频率。 数字HPFC模块通过提供具有第二预定值（K2）的第二补偿信号来调整实信号分量频域和虚信号分量频域的高通响应的增益。

    METHOD AND SYSTEM FOR SUPPRESSING CARRIER LEAKAGE
    4.
    发明申请
    METHOD AND SYSTEM FOR SUPPRESSING CARRIER LEAKAGE 审中-公开
    用于抑制载波泄漏的方法和系统

    公开(公告)号：WO2005002063A3

    公开(公告)日：2005-10-13

    申请号：PCT/US2004013486

    申请日：2004-04-30

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

    Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

    IPC: H03C3/40 ,  H04B1/30 ,  H04L27/00 ,  H04L27/04

    CPC classification number: H04B1/30 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018

    Abstract: A method and system for determining at least one DC offset compensation value used to suppress carrier leakage occurring on real (184) and imaginary (186) signal paths in an analog radio transmitter when a significant temperature change (168) in the transmitter is detected. At least one DC offset signal having a level that corresponds to the at least one DC offset compensation value is provided to a digital DC offset compensation module which adjusts the DC level of at least one of the real and imaginary signal paths (184 and 186).

    Abstract translation: 一种用于当检测到发射机中的显着温度变化（168）时，确定至少一个DC偏移补偿值的方法和系统，所述至少一个DC偏移补偿值用于抑制在模拟无线电发射机中实际（184）和虚（186）信号路径上发生的载波泄漏。 具有对应于至少一个DC偏移补偿值的电平的至少一个DC偏移信号被提供给数字DC偏移补偿模块，其调整实信号路径和虚信号路径（184和186）中的至少一个的DC电平， 。

    METHOD AND SYSTEM FOR ALL DIGITAL GAIN CONTROL
    5.
    发明申请
    METHOD AND SYSTEM FOR ALL DIGITAL GAIN CONTROL 审中-公开
    所有数字增益控制的方法和系统

    公开(公告)号：WO03104925A2

    公开(公告)日：2003-12-18

    申请号：PCT/US0317857

    申请日：2003-06-05

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  YANG RUI

    IPC: H03M1/18 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H03G7/06 ,  H03M1/12 ,  H04B17/40 ,  G06F

    CPC classification number: H03G7/06 ,  H03G3/001 ,  H03M1/1235

    Abstract: 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.

    Abstract translation: 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，并且满足剩余的要求，而没有太多困难，使用模数转换方法，通过压缩有效ADC位数来增加有效ADC位的数量 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。

    KASKADENFREQUENZUMSETZER UNTER VERWENDUNG VON PHASENVERSCHOBENEN SIGNALEN DER LOKALEN OSZILLATOREN
    6.
    发明申请
    KASKADENFREQUENZUMSETZER UNTER VERWENDUNG VON PHASENVERSCHOBENEN SIGNALEN DER LOKALEN OSZILLATOREN 审中-公开

    公开(公告)号：WO0158103A3

    公开(公告)日：2002-02-14

    申请号：PCT/US0103041

    申请日：2001-01-31

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID

    IPC: H03D7/16

    CPC classification number: H03D7/163 ,  H03D7/166

    Abstract: For direct up- or down-conversion between baseband and carrier frequency signals, each component of such a signal is supplied to a first mixer together with a local oscillator signal at one-half the carrier frequency and the output from that first mixer is supplied to a second mixer together with the same local oscillator signal, but at a phase which differs by 90 DEG from that of the local oscillator signal supplied to the first mixer.

    Abstract translation: 对于基带和载波频率信号之间的直接上变频或下变频，这种信号的每个分量与载波频率的一半的本地振荡器信号一起提供给第一混频器，并且将来自该第一混频器的输出提供给 第二混频器与相同的本地振荡器信号，但是与提供给第一混频器的本地振荡器信号的相位相差90°的相位。

    ONE BIT DIGITAL QUADRATURE MODULATOR
    7.
    发明申请
    ONE BIT DIGITAL QUADRATURE MODULATOR 审中-公开
    一位数字数字调制器

    公开(公告)号：WO2007106460A3

    公开(公告)日：2007-11-01

    申请号：PCT/US2007006266

    申请日：2007-03-12

    Applicant: INTERDIGITAL TECH CORP ,  HAQUE TANBIR ,  KAZAKEVICH LEONID

    Inventor： HAQUE TANBIR ,  KAZAKEVICH LEONID

    IPC: H04L27/36

    CPC classification number: H04L27/361 ,  H03F3/217 ,  H03F3/24 ,  H03F2200/331 ,  H03F2200/336 ,  H04B1/0014 ,  H04B1/0475 ,  H04B2001/0408 ,  H04L27/362 ,  H04L27/364

    Abstract: In a digital Cartesian modulation transmitter, an encoder generates 1-bit logic signals from in-phase and quadrature signals. A single bit digital modulator multiplexes the 1-bit logic signals for Cartesian I/Q modulation. A digital upconverter (DUG) upconverts the multiplexed 1-bit logic signal. A digital power amplifier (DPA) generates a radio frequency (RF) signal based on the upconverted signal. In a digital polar modulation transmitter, an encoder converts a magnitude signal to a first 1-bit logic signal. A digital phase modulator modulates a carrier using a phase signal to generate a second 1-bit logic signal. A DUC upconverts the second 1-bit logic signal. A first-in first-out (FIFO) memory stores the first 1-bit logic signal. A combiner combines angle information contained in the second 1-bit logic signal with magnitude information contained in the first 1-bit logic signal stored in the FIFO memory. A DPA generates an RF signal based on the combined signal.

    Abstract translation: 在数字笛卡尔调制发射机中，编码器从同相和正交信号中产生1位逻辑信号。 单位数字调制器将1位逻辑信号复用为笛卡尔I / Q调制。 数字上变频器（DUG）上变频复用的1位逻辑信号。 数字功率放大器（DPA）基于上变频信号产生射频（RF）信号。 在数字极化调制发射机中，编码器将幅度信号转换为第一个1位逻辑信号。 数字相位调制器使用相位信号来调制载波以产生第二个1位逻辑信号。 DUC将第二个1位逻辑信号上变频。 先进先出（FIFO）存储器存储第一个1位逻辑信号。 组合器将包含在第二1位逻辑信号中的角度信息与存储在FIFO存储器中的第一1位逻辑信号中包含的幅度信息相结合。 DPA根据组合信号产生RF信号。

    METHOD AND APPARATUS FOR ESTIMATING AND CONTROLLING INITIAL TIME SLOT GAIN IN A WIRELESS COMMUNICATION SYSTEM
    9.
    发明申请
    METHOD AND APPARATUS FOR ESTIMATING AND CONTROLLING INITIAL TIME SLOT GAIN IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    用于无线通信系统中初始时间段增益的估计和控制的方法和装置

    公开(公告)号：WO2004095765A2

    公开(公告)日：2004-11-04

    申请号：PCT/US2004008160

    申请日：2004-03-16

    Applicant: INTERDIGITAL TECH CORP ,  YANG RUI ,  GRIECO DONALD M ,  KAZAKEVICH LEONID

    Inventor： YANG RUI ,  GRIECO DONALD M ,  KAZAKEVICH LEONID

    IPC: H04B17/40 ,  H03G3/30 ,  H04L5/14 ,  H04L

    CPC classification number: H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

    Abstract: 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.

    Abstract translation: 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。

    WIRELESS COMMUNICATION METHOD AND SYSTEM WITH CONTROLLED WTRU PEER-TO-PEER COMMUNICATIONS
    10.
    发明申请
    WIRELESS COMMUNICATION METHOD AND SYSTEM WITH CONTROLLED WTRU PEER-TO-PEER COMMUNICATIONS 审中-公开
    具有受控WTRU对等通信的无线通信方法和系统

    公开(公告)号：WO2004032536A3

    公开(公告)日：2004-10-14

    申请号：PCT/US0330967

    申请日：2003-09-30

    Applicant: INTERDIGITAL TECH CORP

    Inventor： REDDY GAUTAM G ,  CHITRAPU PRABHAKAR R ,  KAZAKEVICH LEONID ,  HUNKELER TERESA ,  CHANDRA ARTY

    IPC: H04B7/26 ,  G01S5/00 ,  H04L12/28 ,  H04L12/56 ,  H04L29/02 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/04 ,  H04W88/06 ,  H04Q7/00

    CPC classification number: H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

    Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs (33, 37). The wireless network has at least one base station (25) having a transceiver operating in an infrastructure communication mode withmulti mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications (40) of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on(duality of Service criteria).

    Abstract translation: 无线网络提供与多模式无线WTRU的受控无线通信（33,37）。 所述无线网络具有至少一个基站（25），所述基站具有以与多模WTRU的基础设施通信模式操作的收发机，以及控制器，所述控制器经由与WTRU的基础设施通信来传输控制信号，所述WTRU控制对等模式通信（40） 该WTRU与其他WTRU。 WTRU具有被配置用于在与网络基站的基础设施通信模式中进行选择性操作并且处于与其他WTRU的对等通信模式中的收发器组件。 WTRU还具有收发器控制器，该收发器控制器被配置为基于在与网络基站的基础设施通信中接收到的通信信号来选择性地控制与其他WTRU的对等模式通信。 优选地，收发器控制器被配置为基于（服务标准的二重性）来控制收发器组件以在基础设施通信模式和对等通信模式之间切换。

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