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公开(公告)号：EP1636900A4
公开(公告)日：2007-04-18
申请号：EP04756111
申请日：2004-06-24
Applicant: INTERDIGITAL TECH CORP
Inventor： REZNIK ALEXANDER , YANG RUI , LI BIN , ZEIRA ARIELA
IPC: H04L25/03 , H03D1/04 , H04B20060101 , H04B1/707
CPC classification number: H04L25/03305 , H04B1/71055 , H04L25/03331 , H04L25/03993
Abstract: The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.
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22.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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公开(公告)号：EP1554853A4
公开(公告)日：2010-05-05
申请号：EP03770679
申请日：2003-10-07
Applicant: INTERDIGITAL TECH CORP
Inventor： LI BIN , DIFAZIO ROBERT A , GRIECO DONALD M , ZEIRA ARIELA
IPC: H04L27/22 , H04L25/03 , H04L27/233
CPC classification number: H04L27/2331 , H04L25/03197 , H04L27/2332
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公开(公告)号：MY151861A
公开(公告)日：2014-07-14
申请号：MYPI20031693
申请日：2003-05-05
Applicant: INTERDIGITAL TECH CORP
Inventor： LI BIN
IPC: H04B1/707
Abstract: A SIMPLE AND ROBUST CTL IS USED FOR TIME TRACKING OF MULTIPATH COMPONENTS OF A SPREAD SPECTRUM SIGNAL TRANSMITTED OVER A WIRELESS MULTIPATH FADING CHANNEL. A DIGITAL CODE-TRACKING LOOP (21) INCLUDES THE IMPLEMENTATIONS OF DESPREADING EARLY AND LATE DATA SAMPLES BY USE OF A PSEUDONOISE SEQUENCE, AN ERROR SIGNAL OUTPUT GENERATED BY THE DESPREADING, AND ADJUSTMENT FOR A PLURALITY OF ON-TIME, EARLY AND LATE SAMPLES, A DATA RATE OF A CONTROL SIGNAL PROVIDED AS A FRACTIONAL PROPORATION OF A DATA RATE OF ERROR SIGNALS.
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公开(公告)号：CA2653507C
公开(公告)日：2013-04-09
申请号：CA2653507
申请日：2003-04-29
Applicant: INTERDIGITAL TECH CORP
Inventor： LI BIN
Abstract: A simple and robust CTL is used for time tracking of multipath components of a spread spectrum signal transmitted over a wireless multipath fading channel. A digital code-tracking loop includes the implementations of despreading early and late data samples by use of a pseudonoise sequence, an error signal output generated by the despreading, and adjustment for a plurality of on-time, early and late samples, a data rate of a control signal provided as a fractional proportion of a data rate of error signals.
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Patent Agency Ranking
公开(公告)号：NO20074706L
公开(公告)日：2007-11-13
申请号：NO20074706
申请日：2007-09-14
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JR JOHN DAVID , REZNIK ALEXANDER , DIFAZIO ROBERT A , BECKER PETER EDWARD , LI BIN , PAN KYLE JUNG-LIN
IPC: H04B7/005
Abstract: A receiver or an integrated circuit (IC) incorporated therein includes a fast Fourier transform (FFT)-based (or hybrid FFT-based) sliding window block level equalizer (BLE) for generating equalized samples. The BLE includes a noise power estimator, first and second channel estimators, an FFT-based chip level equalizer (CLEQ) and a channel monitor unit. The noise power estimator generates a noise power estimate based on two diverse sample data streams. The channel estimators generate respective channel estimates based on the sample data streams. The channel monitor unit generates a first channel monitor signal including truncated channel estimate vectors based on the channel estimates, and a second channel monitor signal which indicates an approximate rate of change of the truncated channel estimate vectors. The FFT-based CLEQ generates the equalized samples based on the noise power estimate, one-block samples of the first and second sample data streams, the channel estimates and the monitor signals.
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公开(公告)号：NO20072859A
公开(公告)日：2007-06-05
申请号：NO20072859
申请日：2007-06-05
Applicant: INTERDIGITAL TECH CORP
Inventor： YANG RUI , PIETRASKI PHILIP J , STERNBERG GREGORY S , LI BIN , BELURI MIHAELA C , DEMIR ALPASLAN , PAN JUNG-LIN
IPC: H04B7/005
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
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公开(公告)号：NO20062435A
公开(公告)日：2006-08-02
申请号：NO20062435
申请日：2006-05-29
Applicant: INTERDIGITAL TECH CORP
Inventor： STERNBERG GREGORY S , YANG RUI , LI BIN , PIETRASKI PHILIP J
CPC classification number: H04L1/0026 , H04L1/20 , H04L25/0202
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公开(公告)号：NO20061560L
公开(公告)日：2006-06-09
申请号：NO20061560
申请日：2006-04-06
Applicant: INTERDIGITAL TECH CORP
Inventor： LI BIN , PIETRASKI PHILIP J , STERNBERG GREGORY S
Abstract: A method and apparatus for estimating attributes of a received signal that includes a plurality of transmitted signals are provided. The amplitude of the received signal is estimated by performing a method of demodulation based on known signal information. The amplitude of an M-ary quadrature amplitude modulated signal is estimated based upon known or ascertainable phase information regarding a plurality of transmitted symbols. The amplitude of a q-ary amplitude shift keyeing signal is estimated based upon known or ascertainable magnitude information regarding a plurality of transmitted symbols. Statistical information is also used for amplitude estimation.
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公开(公告)号：NO20061560A
公开(公告)日：2006-06-09
申请号：NO20061560
申请日：2006-04-06
Applicant: INTERDIGITAL TECH CORP
Inventor： LI BIN , PIETRASKI PHILIP J , STERNBERG GREGORY S
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