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公开(公告)号：BR0016532A
公开(公告)日：2002-12-24
申请号：BR0016532
申请日：2000-12-20
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , FEVRIER IAN , KANG INYUP , PATRICK CHRISTOPHER
IPC: G06F17/15 , H04B1/7093 , H04B7/26 , H04B1/707
Abstract: A novel and improved method and apparatus for searching is described. This searcher combines the ability to search multiple offsets of single pilots, such as those found in the IS-95 system, with the ability to search multiple pilots, such as those found in a GPS location determination system. Both types of searching can be done in a single architecture combining the parallel computation features of a matched filter with the flexibility of allowing a variable number of coherent accumulations and a variable number of non-coherent accumulations to be performed at high speed for a wide range of search hypotheses in a resource efficient manner. This invention allows for parallel use of the matched filter structure in a time-sliced manner to search multiple windows. In addition, the searcher allows for optional independent Walsh decovering for each search window. The time-sharing approach allows for optional frequency searching of any offset.
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公开(公告)号：BR9913547A
公开(公告)日：2002-04-23
申请号：BR9913547
申请日：1999-09-02
Applicant: QUALCOMM INC
Inventor： GLAZKO SERGUEI A , SIH GILBERT C , ZOU QIUZHEN
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location including the steps of receiving a set of higher resolution sample data at a resolution interval, accumulating said higher resolution sample data over a chip interval yielding accumulation sums, and correlating said accumulation sums with a correlation code at a set of offsets which are separated by said resolution interval.
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公开(公告)号：MXPA01002491A
公开(公告)日：2002-04-10
申请号：MXPA01002491
申请日：1999-09-03
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C
Abstract: La presente invencion es un novedoso mejorado metodo y aparato para realizar la localizacion de posicion en un sistema de comunicacion inalambrica. Una modalidad de la invencion comprende un metodo para realizar la localizacion de posicion que comprende los pasos de recibir muestras de senal, generar una secuencia de adquisicion burda, rotar la secuencia de adquisicion burda, produciendo una secuencia de adquisicion burda, rotada, y aplicar la secuencia de adquisicion burda, rotada a las muestras de senal en un conjunto de desplazamientos de tiempo produciendo los datos de salida correlacionados.
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公开(公告)号：BR9915618A
公开(公告)日：2002-01-08
申请号：BR9915618
申请日：1999-11-18
Applicant: QUALCOMM INC
Inventor： ZOU QUIZHEN , SIH GILBERT C , AGRAWAL AVNEESH
Abstract: A novel and improved method and apparatus for a fast-slewing pseudorandom noise sequence generator is described. One or more loadable PN generators are controlled by a DSP or microprocessor in conjunction with a free-running counter which maintains a reference offset count. The PN generator will typically be part of a finger or searcher. The DSP or microprocessor may assist in other finger or searcher functions as well as the slew function, and can control one or more fingers and/or searchers. Each PN generator is comprised of a loadable linear feedback shift register (LFSR) or its equivalent, a loadable counter for maintaining an index of the state of that particular PN generator, and a slew control device capable of receiving a slew command and controlling the LFSR and index counter to enact an advance or a retard of a certain offset distance.
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公开(公告)号：HK1035600A1
公开(公告)日：2001-11-30
申请号：HK01105667
申请日：2001-08-14
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , BI NING
IPC: G10L21/0208 , G10L15/02 , G10L15/06 , G10L15/10 , G10L15/20 , G10L21/0216 , G10L
Abstract: The speech recognition training unit is modified to store digitized speech samples into a speech database that can be accessed at recognition time. The improved recognition unit comprises a noise analysis, modeling, and synthesis unit which continually analyzes the noise characteristics present in the audio environment and produces an estimated noise signal with similar characteristics. The recognition unit then constructs a noise-compensated template database by adding the estimated noise signal to each of the speech samples in the speech database and performing parameter determination on the resulting sums. This procedure accounts for the presence of noise in the recognition phase by retraining all the templates using an estimated noise signal with similar characteristics as the actual noise signal that corrupted the word to be recognized. This method improves the likelihood of a good template match, which increases the recognition accuracy.
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Patent Agency Ranking
公开(公告)号：AU3984601A
公开(公告)日：2001-09-03
申请号：AU3984601
申请日：2001-02-23
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , KUMAR HEMANT , LEE WAY-SHING
Abstract: The invention is a digital signal processor architecture that is designed to speed up frequently-used signal processing computations, such as FIR filters, correlations, FFTs and DFTs. The architecture uses a coupled dual-MAC architecture (MAC1), (MAC2) and attaches a dual-MAC coprocessor (MAC3), (MAC4) onto it in a unique way to achieve a significant increase in processing capability.
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公开(公告)号：AU3984401A
公开(公告)日：2001-09-03
申请号：AU3984401
申请日：2001-02-23
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , CHEN XUFENG , HSU DE D
Abstract: Two multiply-accumulate units are coupled together so that the computation (B*C)+(D*E) can be completed in one cycle. An adder (216) adds together the products of the two multipliers (206), (208). The sum is applied to the first accumulator (220). Preferably, the second product is also applied to the second accumulator (222), and a multiplexer (218) applies either a zero or the second product to the adder (216). If two unrelated computations are to be executed simultaneously, then the zero is applied, and the output of the second accumulator is fed back to the register file (PI2). If a single (B*C)+(D*E) computation is to be executed, then the second product is applied to the adder, and the output of the second accumulator is disregarded.
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公开(公告)号：CZ288667B6
公开(公告)日：2001-08-15
申请号：CZ127194
申请日：1993-09-24
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C
IPC: H04M1/60 , G10L19/012 , H04B3/23 , H04M9/08
Abstract: In the present invention there is disclosed an echo canceller for cancelling in a return channel signal an echoed receive channel signal where the echoed receive channel signal is combined by an echo channel with an input return channel signal, the echo canceller comprising: initial filter (156) means for generating first filter coefficients, generating a first echo estimate signal with the first filter coefficients and a receive channel signal, and updating the first filter coefficients in response to a first filter control signal; first summer(148) means for subtracting the first echo estimate signal from a combined return channel and echo receive channel signal to generate a first echo residual signal; state filter (158) means for generating second filter coefficients, generating a second echo estimate signal with the second filter coefficients and said receive channel signal, and updating the second filter coefficients in response to a second filter control signal; second summer (1
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公开(公告)号：ID29146A
公开(公告)日：2001-08-02
申请号：ID20010801
申请日：1999-09-02
Applicant: QUALCOMM INC
Inventor： ZOU QUIZHEN , SIH GILBERT C , EDMONSTON BRIAN S
IPC: G01S1/00 , G01S5/00 , G01S19/09 , G01S19/23 , G01S19/24 , G01S19/25 , G01S19/29 , G01S19/30 , G01S19/46 , H04Q7/34 , H04Q7/38 , G01S5/14
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. In one embodiment the invention comprises a method in a subscriber unit (10) for performing position location in a CDMA wireless communications system having a base station (12), the method comprising: receiving a position location request containing aiding information from the base station (12) over a first receive frequency; in response to the position location request, tuning a receiver (52, 54, 102, 104) of the subscriber unit (10) away from the first receive frequency to a position location frequency in order to receive position location information; and receiving information over the position location frequency and using the received information to perform a position location procedure, the method being characterized by: including data transition boundary information in the aiding information.
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公开(公告)号：AU2285101A
公开(公告)日：2001-07-03
申请号：AU2285101
申请日：2000-12-20
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , FEVRIER IAN , KANG INYUP , PATRICK CHRISTOPHER
IPC: G06F17/15 , H04B1/7093 , H04B7/26 , H04B1/707
Abstract: A novel and improved method and apparatus for searching is described. This searcher combines the ability to search multiple offsets of single pilots, such as those found in the IS-95 system, with the ability to search multiple pilots, such as those found in a GPS location determination system. Both types of searching can be done in a single architecture combining the parallel computation features of a matched filter with the flexibility of allowing a variable number of coherent accumulations and a variable number of non-coherent accumulations to be performed at high speed for a wide range of search hypotheses in a resource efficient manner. This invention allows for parallel use of the matched filter structure in a time-sliced manner to search multiple windows. In addition, the searcher allows for optional independent Walsh decovering for each search window. The time-sharing approach allows for optional frequency searching of any offset.
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