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公开(公告)号：AU2007200808B2
公开(公告)日：2009-01-29
申请号：AU2007200808
申请日：2007-02-23
Applicant: INTERDIGITAL TECH CORP
Inventor： STERNBERG GREGORY S , PIETRASKI PHILIP J
Abstract: Detecting, avoiding and/or correcting problematic puncturing patterns in parity bit streams used when implementing punctured Turbo codes is achieved without having to avoid desirable code rates. This enables identification/avoidance of regions of relatively poor Turbo code performance. Forward error correction comprising Turbo coding and puncturing achieves a smooth functional relationship between any measure of performance and the effective coding rate resulting from combining the lower rate code generated by the Turbo encoder (600) with puncturing of the parity bits. In one embodiment, methods to correct/avoid degradations due to Turbo coding are implemented by puncturing interactions when two or more stages of rate matching (610, 620) are employed.
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公开(公告)号：CA2461336C
公开(公告)日：2008-01-22
申请号：CA2461336
申请日：2002-09-27
Applicant: INTERDIGITAL TECH CORP
Inventor： STERNBERG GREGORY S
Abstract: Method and apparatus for detection and correction of oscillator frequency error within a wireless communication system receiver. A frequency estimator having block correlators, conjugate product and sum, accumulation block, multipath detection and a loop filter (accumulate block) (adaptive bandwidth ). The multipath detection includes a search block, threshold detection block a nd a block for combining multipath components. The frequency difference attaine d between a base station (BS) local oscillator (LO) and a user equipment (UE) local oscillator is such that the UE LO does not deviate more than 0.1 PPM from the BS LO.
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公开(公告)号：MY133314A
公开(公告)日：2007-11-30
申请号：MYPI20034409
申请日：2003-11-18
Applicant: INTERDIGITAL TECH CORP
Inventor： STERNBERG GREGORY S , YANG RUI , PIETRASKI PHILIP J , OLESEN ROBERT LIND
Abstract: A SYSTEM, COMPONENTS AND METHODS PROVIDE FEC DECODING IN A WIRELESS COMMUNICATION SYSTEM IN WHICH SIGNAL TO NOISE RATIO ESTIMATION IS USED FOR SCALING INFORMATION CAPTURED BY A DEMODULATOR (14) IN PROCESSING RECEIVED WIRELESS COMMUNICATION SIGNALS. A PREFERRED WIRELESS TRANSMIT RECEIVE UNIT (WTRU) HAS A CHANNEL RATE ESTIMATION DEVICE (25) CONFIGURED TO PROCESS THE RECEIVED COMMUNICATION SIGNALS FOR THE PARTICULAR COMMUNICATION CHANNEL AND TO PRODUCE CHANNEL CHANGE RATE ESTIMATES. A SIGNAL TO NOISE RATIO (SNR) ESTIMATION DEVICE (16) OF THE WTRU IS CONFIGURED TO PRODUCE SNR ESTIMATES BASED ON OBSERVATION WINDOWS OF A CALCULATED NUMBER OF SAMPLES OF THE RECEIVED SIGNAL WHERE THE NUMBER OF SAMPLES USED FOR EACH OBSERVATION WINDOW IS CALCULATED BY AN OBSERVATION WINDOW SELECTION DEVICE (25) AS A FUNCTION OF THE CHANNEL CHANGE RATE ESTIMATES PRODUCED BY THE CHANNEL RATE ESTIMATION DEVICE (23).(FIG 3)
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公开(公告)号：NO20074354L
公开(公告)日：2007-10-24
申请号：NO20074354
申请日：2007-08-27
Applicant: INTERDIGITAL TECH CORP
Inventor： REZNIK ALEXANDER , ZHANG GUODONG , CHITRAPU PRABHAKAR R , BRIANCON ALAIN CHARLES LOUIS , STERNBERG GREGORY S , SHAH YOGENDRA C , KUMOLUYI AKINLOLU OLORUNTOSI , YE CHUNXUAN
Abstract: A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.
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公开(公告)号：MX2007009064A
公开(公告)日：2007-10-02
申请号：MX2007009064
申请日：2006-01-26
Applicant: INTERDIGITAL TECH CORP
Inventor： STERNBERG GREGORY S , ZHANG GUODONG , CHITRAPU PRABHAKAR R , REZNIK ALEXANDER , BRIANCON ALAIN CHARLES LOUIS , SHAH YOGENDRA C , KUMOLUYI AKINLOLU OLORUNTOSI , YE CHUNXUAN
IPC: H04L9/00
Abstract: Un metodo y aparato se usa para generar una clave aleatoria perfectamente secreta entre dos o mas transceptores en una red de comunicacion inalambrica. En un sistema de punto a punto, ambos transceptores producen un estimado de la respuesta de impulso de canal (CIR) en base a la radiosenal recibida. La estimacion de CIR se sincroniza y puede incluir la correccion y deteccion de errores. Una clave secreta larga de bits se genera a partir de una version digitalizada del estimado de CIR, a partir de la cual se deriva una clave de encriptacion perfectamente secreta por amplificacion de privacidad.
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Patent Agency Ranking
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：CA2596172A1
公开(公告)日：2006-08-03
申请号：CA2596172
申请日：2006-01-26
Applicant: INTERDIGITAL TECH CORP
Inventor： REZNIK ALEXANDER , YE CHUNXUAN , BRIANCON ALAIN CHARLES LOUIS , CHITRAPU PRABHAKAR R , STERNBERG GREGORY S , SHAH YOGENDRA C , ZHANG GUODONG , KUMOLUYI AKINOLU OLORUNTOSI
IPC: H04L9/00
Abstract: A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.
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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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