公开(公告)号：BR0209639A

公开(公告)日：2006-02-07

申请号：BR0209639

申请日：2002-05-15

Applicant: QUALCOMM INC

Inventor： LAROCCA JUDITH ,  IRVINE CHRIS A ,  LEVIN JEFFREY A

IPC: G06F17/14 ,  G06F7/00 ,  G06T9/00 ,  H03M7/30 ,  H04N1/32 ,  H04N1/41 ,  H04N7/12 ,  H04N7/30 ,  H04N7/50

Abstract: An apparatus to determine a transform of a block of encoded data the block of encoded data comprising a plurality of data elements. An input register is configured to receive a predetermined quantity of data elements. At least one butterfly processor is coupled to the input register and is configured to perform at least one mathematical operation on selected pairs of data elements to produce an output of processed data elements. At least one intermediate register is coupled to the butterfly processor and configured to temporarily store the processed data. A feedback loop is coupled to the intermediate register and the butterfly processor, and where if enabled, is configured to transfer a first portion of processed data elements to the appropriate butterfly processor to perform additional mathematical operations and where if disabled, is configured to transfer a second portion of processed data elements to at least one holding register.

公开(公告)号：AU2005260653A1

公开(公告)日：2006-01-12

申请号：AU2005260653

申请日：2005-06-30

Applicant: QUALCOMM INC

Inventor： HOU JILEI ,  SMEE JOHN E ,  BUTLER BRIAN K ,  WILBORN THOMAS B ,  CORALLI ALESSANDRO VANELLI ,  PADOVANI ROBERTO ,  BENDER PAUL E ,  LEVIN JEFFREY A ,  PFISTER HENRY DAVID

IPC: H04B1/707

公开(公告)号：CA2220224C

公开(公告)日：2005-11-22

申请号：CA2220224

申请日：1996-05-02

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  EASTON KENNETH D ,  LEVIN JEFFREY A ,  ZIV NOAM A

IPC: H04B1/69 ,  H04Q7/22 ,  H04J13/02

Abstract: An integrated search processor (128) used in a modem (110) for a spread spectrum communications system buffers in a buffer (172) received signals samples and utilizes a time sliced transform processor (120) operating on successive offsets from the buffer (172). The search processor (128) autonomously steps through a search as configured by a microprocessor (136) specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor (128) calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element (122) reassignment. The search is done in a linar fashion independent of the probability that a signal being searched for was transmitted at any given time.

公开(公告)号：AT308163T

公开(公告)日：2005-11-15

申请号：AT99964215

申请日：1999-12-09

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM B

IPC: H04B1/7117 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/26 ,  H04B1/707

Abstract: A wireless receiver receiving multipath Wash-code symbols determines which of fingers 402, 410 have locked on a signal. Measurements of the correlation energies between the received signal and all possible symbols are stored in energy storage units 404, 412. The actual signals are combined in combiner 408. A maximum determiner 416 determines the most likely combined symbol, and an index for this symbol is fed back to the energy storage units. Lock detectors 406, 414 use the measurement for this fed-back symbol to determine whether the finger has locked onto a path. This determination is used to decide whether the next signal detected by that finger should be applied to the combiner.

公开(公告)号：AT270009T

公开(公告)日：2004-07-15

申请号：AT99941157

申请日：1999-08-13

Applicant: QUALCOMM INC

Inventor： RIDDLE CHRISTOPHER C ,  LEVIN JEFFREY A

IPC: H03M7/24 ,  G06F7/48 ,  H03M7/34 ,  H03M7/00 ,  H03M3/02

Abstract: A method and apparatus for compressing fixed point signals without introducing a bias. Signals are compressed according to a dithered rounding approach wherein signal values are rounded up and rounded down with approximately equal probability, canceling the bias that would otherwise result from the rounding operation. Numerical properties of the input signal are exploited in order to determine whether the signal value should be rounded up or down. Signal compression may, therefore, be introduced at multiple points within a system without accumulating a signal bias and degrading downstream performance. Further, one bit signal compression may be achieved in a particularly efficient fashion with a minimal amount of hardware.

公开(公告)号：MXPA03002622A

公开(公告)日：2004-05-24

申请号：MXPA03002622

申请日：2001-09-14

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A

IPC: H03M13/09 ,  H03M13/15 ,  H03M13/47 ,  H04L1/00 ,  H03M1/00

Abstract: Un metodo y aparato para codificar en forma eficiente codigos de bloque lineal, que utiliza una tabla de busqueda que incluye un grupo de respuestas de impulso para soportar un desempeno mas rapido mediante codificacion paralela. Las ventajas incluyen la capacidad para escalarlo que falta en los esquemas existentes.

公开(公告)号：FI20040051A

公开(公告)日：2004-01-15

申请号：FI20040051

申请日：2004-01-15

Applicant: QUALCOMM INC

Inventor： TIEDEMAN EDWARD G JR ,  GILHOUSEN KLEIN S ,  ODENWALDER JOSEPH P ,  ZEHAVI EPHRAIM ,  LEVIN JEFFREY A ,  WHEATLEY CHARLES E

IPC: H04B7/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04B

Abstract: A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote station controls the transmission power of a second remote station by transmitting a rate dependent power control signal to the second remote communication station. Since only the second communication knows its transmission rate a priori, it must determine its course of action in accordance with both the received power control signal and the knowledge of its transmission rate.

公开(公告)号：ES2194095T3

公开(公告)日：2003-11-16

申请号：ES96902671

申请日：1996-01-16

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  WERNER DAVID E ,  EASTON KENNETH D

IPC: H04B7/216 ,  H04B7/26 ,  H04L27/30 ,  H04W88/08

公开(公告)号：AU766145B2

公开(公告)日：2003-10-09

申请号：AU2050200

申请日：1999-12-09

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM B

IPC: H04B1/7117 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/26 ,  H04B1/707

Abstract: A wireless receiver receiving multipath Wash-code symbols determines which of fingers 402, 410 have locked on a signal. Measurements of the correlation energies between the received signal and all possible symbols are stored in energy storage units 404, 412. The actual signals are combined in combiner 408. A maximum determiner 416 determines the most likely combined symbol, and an index for this symbol is fed back to the energy storage units. Lock detectors 406, 414 use the measurement for this fed-back symbol to determine whether the finger has locked onto a path. This determination is used to decide whether the next signal detected by that finger should be applied to the combiner.

公开(公告)号：AU2002334975A1

公开(公告)日：2003-04-22

申请号：AU2002334975

申请日：2002-10-10

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A

IPC: H04J3/06 ,  H04L1/00 ,  H04L7/04

Abstract: An apparatus, such as a modem or other component within a spread spectrum communication system, is described that introduces one or more "entropy" bits into a data stream to ensure that other components of the communication system readily detect data frame misalignment. In particular, an entropy bit is introduced within each frame to help ensure that the other components generate parity errors when not properly synchronized with the framing of the data stream. The entropy bits have values that change relatively frequently, and are unrelated to the other data bits of the frames. The entropy bit may, for example, be randomly or pseudo-randomly generated.