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11.发明申请METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING A TRANSMITTER'S IMPEDANCE AND IMPLEMENTING A HYBRID POWER AMPLIFIER THEREIN WHICH SELECTIVELY CONNECTS LINEAR AND SWITCH-MODE POWER AMPLIFIERS IN SERIES 审中-公开用于动态调整发射机阻抗的方法和装置，并实现其中选择性连接线性和开关功率放大器的混合功率放大器
公开(公告)号：WO2005101678A2
公开(公告)日：2005-10-27
申请号：PCT/US2005009209
申请日：2005-03-18
Applicant: INTERDIGITAL TECH CORP , HAQUE TANBIR , DEMIR ALPASLAN , KAZAKEVICH LEONID , KLAHN GERALD
Inventor： HAQUE TANBIR , DEMIR ALPASLAN , KAZAKEVICH LEONID , KLAHN GERALD
CPC classification number: H04B1/0458 , H03F1/0261 , H03F1/56 , H03F3/24 , H03F2200/207 , H03F2200/465 , H03G3/3042 , H04W52/52 , Y02D70/14
Abstract: A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.
Abstract translation: 一种用于动态调整发射机功率放大器（PA）和天线之间的阻抗以有效地将功率从PA传输到天线的方法和装置。 根据PA是线性PA还是开关模式PA，PA和天线之间的阻抗根据功率电平测量和/或PA直流（DC）消耗测量值进行调整。 在另一个实施例中，包括第一级线性PA和第二级开关模式PA的混合PA实现在发射机中。 混合PA根据第一级线性PA的输出功率电平选择性地将第一级线性PA的输出连接到第二级开关模式PA的输入端和混合PA的输出端之间，输出功率 混合PA的电平或由发射功率控制（TPC）指令指示的要求。
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12.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
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。
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公开(公告)号：WO2004073321A3
公开(公告)日：2004-12-09
申请号：PCT/US2004003207
申请日：2004-02-05
Applicant: INTERDIGITAL TECH CORP , DEMIR ALPASLAN , GRIECO DONALD M , HAIM JOHN W , BEDNARZ ANDREW F , PIETRASKI PHILIP J , GUCCIONE LOUIS J , CHITRAPU PRABHAKAR R
Inventor： DEMIR ALPASLAN , GRIECO DONALD M , HAIM JOHN W , BEDNARZ ANDREW F , PIETRASKI PHILIP J , GUCCIONE LOUIS J , CHITRAPU PRABHAKAR R
CPC classification number: H04B1/7083 , H04B1/70735 , H04B1/70755 , H04B1/709 , H04B2201/70701 , H04W48/16 , H04W56/00
Abstract: A method and system for performing initial cell search is disclosed. Step 1 (208) processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 (210) processing is performed to obtain the toffset and code group. Step 3 (212) processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.
Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1（208）处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2（210）处理以获得折射和代码组。 执行步骤3（212）处理以识别执行初始小区搜索的WTRU可与其同步的基站的中置码。
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14.发明申请
公开(公告)号：WO2004047309A2
公开(公告)日：2004-06-03
申请号：PCT/US0336130
申请日：2003-11-14
Applicant: INTERDIGITAL TECH CORP
Inventor： KAZAKEVICH LEONID , OZLUTURK FATIH , DEMIR ALPASLAN
CPC classification number: H04B7/0837 , H04B7/0871 , H04B17/309 , H04B17/318 , H04W52/42
Abstract: A wireless transmit/receive unit (WTRU) has multiple receivers with an interface to combine received signals to provided enhanced reception. A control unit selectively controls the powering of the receivers to limit power consumption based on selected parameters.
Abstract translation: 无线发射/接收单元（WTRU）具有多个接收机，具有将接收到的信号组合以提供增强的接收的接口。 控制单元选择性地控制接收机的供电以基于所选择的参数来限制功耗。
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15.发明公开METHOD AND APPARATUS FOR ESTIMATING AND CORRECTING BASEBAND FREQUENCY ERROR IN A RECEIVER 审中-公开方法和装置在接收机中估计和校正的基带频率误差
公开(公告)号：EP1815601A4
公开(公告)日：2008-01-23
申请号：EP05813289
申请日：2005-10-19
Applicant: INTERDIGITAL TECH CORP
Inventor： PIETRASKI PHILIP J , YANG RUI , BELURI MIHAELA , DEMIR ALPASLAN
CPC classification number: H04B1/7097 , H04B1/712 , H04L25/03248
Abstract: A method and apparatus for estimating and correcting baseband frequency error in a receiver. In one embodiment, an equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. In another embodiment, a channel estimator performs channel estimation and generates Rake receiver finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights.
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Patent Agency Ranking
公开(公告)号：EP1595346A4
公开(公告)日：2006-09-13
申请号：EP04708578
申请日：2004-02-05
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , GRIECO DONALD M , HAIM JOHN W , BEDNARZ ANDREW F , PIETRASKI PHILIP J , GUCCIONE LOUIS J , CHITRAPU PRABHAKAR R
CPC classification number: H04B1/7083 , H04B1/70735 , H04B1/70755 , H04B1/709 , H04B2201/70701 , H04W48/16 , H04W56/00
Abstract: A method and system for performing initial cell search is disclosed. Step 1 (208) processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 (210) processing is performed to obtain the toffset and code group. Step 3 (212) processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.
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17.发明公开METHOD AND APPARATUS FOR ESTIMATING THE STEP-SIZE OF AN ADAPTIVE EQUALIZER 审中-公开用于估计自适应洗涤剂的步骤尺寸的方法和装置
公开(公告)号：EP1810402A4
公开(公告)日：2011-09-28
申请号：EP05814908
申请日：2005-10-20
Applicant: INTERDIGITAL TECH CORP
Inventor： PIETRASKI PHILIP J , BELURI MIHAELA , DEMIR ALPASLAN
IPC: H04L25/03
CPC classification number: H04L25/03019 , H04B2201/70701 , H04L2025/03687
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18.发明公开ADAPTIVE EQUALIZER WITH A DUAL-MODE ACTIVE TAPS MASK GENERATOR AND A PILOT REFERENCE SIGNAL AMPLITUDE CONTROL UNIT 审中-公开自适应均衡器随着对一个导频信号的振幅加倍模式激活TAP屏蔽发生器和控制单元
公开(公告)号：EP1807932A4
公开(公告)日：2009-09-02
申请号：EP05816112
申请日：2005-11-02
Applicant: INTERDIGITAL TECH CORP
Inventor： PIETRASKI PHILIP J , BELURI MIHAELA , DEMIR ALPASLAN , PAN JUNG-LIN , STERNBERG GREGORY S , YANG RUI , LI BIN
IPC: H04L25/03
CPC classification number: H04L25/03038 , H04B1/7097 , H04L27/0014 , H04L2025/03509 , H04L2025/03547 , H04L2025/03585 , H04L2025/03611 , H04L2025/03617 , H04L2025/03687 , H04L2027/003 , H04L2027/0038 , H04L2027/0065
Abstract: An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.
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19.发明公开DIGITAL BASEBAND SYSTEM AND PROCESS FOR COMPENSATING FOR ANALOG RADIO TRANSMITTER IMPAIRMENTS 审中-公开数字基带系统和工艺补偿模拟无线电干扰的
公开(公告)号：EP1632033A4
公开(公告)日：2008-02-06
申请号：EP04751813
申请日：2004-05-10
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , KEARNEY KENNETH P
CPC classification number: H04B1/0475 , H03F1/3241 , H03F1/3294 , H03F1/34 , H03F3/24 , H03F2200/462 , H03F2200/465 , H03F2200/468 , H04B2001/0425 , H04B2001/0433
Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a wireless communication transmitter employs a control process to implement numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. By monitoring a plurality of parameters associated with the analog radio, such as temperature, bias current or the like, enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters may be implemented.
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20.发明公开
公开(公告)号：EP1632029A4
公开(公告)日：2008-07-02
申请号：EP04751468
申请日：2004-05-06
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , HAQUE TANBIR
IPC: H04B1/06 , H03G3/00 , H03G3/30 , H04B1/30 , H04B7/00 , H04B7/005 , H04L25/10 , H04L27/00 , H04L27/08 , H04L27/38
CPC classification number: H04L27/3809 , H03G3/001 , H03G3/3052 , H04B1/30 , H04L27/38 , H04L2027/003 , H04L2027/0046 , H04W52/52
Abstract: A communication system (100) including an automatic control (AGC) circuit (105), a receiver (110), an analog to digital (ADC) converter (115) and an insertion phase variation compensation module (120). The AGC circuit receives and amplifies communication signals (150). The gain of the AGC circuit is adjusted. The AGC circuit outputsan amplified signal (145) to the receiver which, in turn, outputs an analog complex signal to the ADC (115). The ADC outputs a digital complex signal to the insertion phase variation compensation module (120) which counteracts the effects of phase offsets introduced into the communication signal due to the continuous gain adjustments associated with the AGC circuit.
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