公开(公告)号：PL197736B1

公开(公告)日：2008-04-30

申请号：PL34980900

申请日：2000-02-08

Applicant: QUALCOMM INC

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

IPC: H04B1/7085

公开(公告)号：AU2002315160B2

公开(公告)日：2007-11-15

申请号：AU2002315160

申请日：2002-06-13

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  THYAGARAJAN KADAYAM ,  GOVINDASWAMY SENTHIL

IPC: H04N7/26 ,  H03M7/30 ,  H04N7/30

Abstract: An apparatus and method of serializing frequency based image data in a digital cinema system is described. At least one group of data that may be represented as a 16X16 block of data is compiled. Alternatively, a frame of data is compiled. The group of data is divided into four groups, each which may be represented as an 8X8 blocks. Each of the four 8X8 blocks of data are serialized using zig-zag scanning vertical scanning, and/or horizontal scanning.

公开(公告)号：MX2007000276A

公开(公告)日：2007-06-15

申请号：MX2007000276

申请日：2005-06-30

Applicant: QUALCOMM INC

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

IPC: H04B1/00 ,  H04B1/707

Abstract: Metodos y sistemas para estimar y cancelar la interferencia piloto en un sistema de comunicacion inalambrica (por ejemplo CDMA); en un metodo, una senal recibida compuesta de un numero de casos de senal, cada uno incluyendo un piloto, es inicialmente procesada para proveer muestras de datos; cada interferencia piloto del caso de senal puede ser estimada mediante el desensanchamiento. de las muestras de datos con una secuencia de ensanchamiento para el caso de senal, la canalizacion de los datos desensanchados para proveer simbolos piloto, la filtracion de los simbolos piloto para estimar la respuesta de canal del caso de senal, y la multiplicacion de la respuesta de canal estimada con la secuencia de ensanchamiento; los estimados de interferencia piloto a causa de una pluralidad de multiples trayectorias en interferencia se acumulan para derivar la interferencia piloto total, la cual es sustraida de las muestras de datos para proveer muestras de datos de piloto cancelado; estas muestras de datos son procesadas para derivar datos desmodulados para cada una de por lo menos un caso de senal (deseado) en la senal recibida.

公开(公告)号：ES2260000T3

公开(公告)日：2006-11-01

申请号：ES00907220

申请日：2000-02-08

Applicant: QUALCOMM INC

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

IPC: H04B1/7085 ,  H04B1/707

Abstract: Procedimiento para efectuar el seguimiento del tiempo en un receptor inalámbrico, que comprende las etapas siguientes: demodular (208, 270) una primera réplica de una señal para generar un primer grupo de valores de energía correspondiente a un grupo de valores de datos posibles de dicha señal; demodular (200, 272) una segunda réplica de dicha señal para generar un segundo grupo de valores de energía correspondiente a dicho grupo de valores de datos posibles; combinar (210, 276) dicho primer y dicho segundo grupo de valores de energía para determinar un grupo combinado de valores de energía; determinar (212, 278) una primera estimación de un valor de datos con la máxima probabilidad de haber sido transmitido, basándose en dicho grupo combinado de valores de energía; revelar (214, 280) un grupo adelantado de muestras desensanchadas de dicha primera réplica, mediante un símbolo correspondiente a dicha primera estimación, para generar un primer valor de energía adelantado; revelar (214, 280) un grupo atrasado de muestras desensanchadas de dicha primera réplica, mediante dicho símbolo correspondiente a dicha primera estimación, para generar un primer valor de energía atrasado; y determinar (216, 282) la diferencia horaria de dicha primera réplica, basándose en dicho primer valor de energía adelantado y dicho primer valor de energía atrasado.

公开(公告)号：CA2193979C

公开(公告)日：2005-12-06

申请号：CA2193979

申请日：1995-07-10

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  WHEATLEY CHARLES E III ,  LEVIN JEFFREY A

IPC: H04B7/216 ,  H04Q7/30

Abstract: The process of the present invention enables a mobile radiotelephone to operate at a 100% duty cycle while providing closed loop power control. The base station measures the signal to noise ratio of the signal from the mobil e and compares (305) that SNR with the SNR threshold values the base station has for each data rate the mobile is capable of transmitting. The base station then generates power control commands (310) to instruct the mobile to change its power depending on the outcome of the comparisons.

公开(公告)号：AT280454T

公开(公告)日：2004-11-15

申请号：AT95926626

申请日：1995-07-05

Applicant: QUALCOMM INC

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

IPC: H04B7/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12

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：FI114123B

公开(公告)日：2004-08-13

申请号：FI962258

申请日：1996-05-29

Applicant: QUALCOMM INC

Inventor： EASTON KENNETH D ,  LEVIN JEFFREY A

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20 ,  H04B1/69

Abstract: An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor 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 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 reassignment. This reduces the searching process related workload of the microprocessor and also reduces the modem costs by allowing a complete channel element modem circuit to be produced in a single IC.

公开(公告)号：SI0732013T1

公开(公告)日：2004-06-30

申请号：SI9530671

申请日：1995-09-27

Applicant: QUALCOMM INC

Inventor： EASTON KENNETH D ,  LEVIN JEFFREY A

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20

Abstract: An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor 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 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 reassignment. This reduces the searching process related workload of the microprocessor and also reduces the modem costs by allowing a complete channel element modem circuit to be produced in a single IC.

公开(公告)号：AU2003297874A1

公开(公告)日：2004-06-30

申请号：AU2003297874

申请日：2003-12-09

Applicant: QUALCOMM INC

Inventor： KINDRED DANIEL R ,  LEVIN JEFFREY A ,  SUNDARESAN RAJESH

IPC: H04B1/707

公开(公告)号：PT732013E

公开(公告)日：2003-11-28

申请号：PT95937306

申请日：1995-09-27

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  EASTON KENNETH D

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20

Abstract: An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor 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 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 reassignment. This reduces the searching process related workload of the microprocessor and also reduces the modem costs by allowing a complete channel element modem circuit to be produced in a single IC.