公开(公告)号：CA2313453A1

公开(公告)日：1999-06-17

申请号：CA2313453

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A

IPC: H04B1/711 ,  H04B1/7073 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7113 ,  H04B7/26 ,  H04L27/22 ,  H04B1/707

Abstract: A system and method for performing the digital receive processing for multiple signals received over the same RF band is described. In a preferred embodiment of the invention, digital RF samples are stored in a queue which is accessed by a searcher (130) and demodulator (112). The searcher (130) and demodulator (112) are preferably located on the same integrated circuit along with the queue. The demodulator (112) demodulates a set of reverse link signals stored within the queue where each reverse link signal is received with at a particular time offset and processed using a particular channel code. The searcher (130) periodically searches for reverse link signals not being processed by the demodulator (112), and for access requests transmitted via the access channel. The searcher (130) preferably searches during the worthy power control groups of each reverse link signal, which corresponds to the two of sixteen power control groups transmitted during an eighth rate frame.

公开(公告)号：AU704501B2

公开(公告)日：1999-04-22

申请号：AU4698896

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：FI974132A

公开(公告)日：1998-01-05

申请号：FI974132

申请日：1997-11-04

Applicant: QUALCOMM INC

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

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20 ,  H04B

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. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.

公开(公告)号：AR001852A1

公开(公告)日：1997-12-10

申请号：AR33640296

申请日：1996-05-03

Applicant: QUALCOMM INC

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

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20 ,  H04Q7/22 ,  H04J13/02

Abstract: La invención se refiere a un método para buscar una senal de múltiples trayectorias, transmitida a velocidad variable desconocida y que comparte unabanda de frecuencia común en sistemas de comunicaciones de telefonía celular. El método esimpl ementado por una procesadora de exploración integrada,utilizada en un modem para un sistema de comunicaciones de espectro distinguido, memoriza temporalmente muestras de recepción y utiliza unaprocesadora de transformadas, en tiemporeban ado, que opera en sucesivos desplazamientos de la memoria intermedia. La procesadora de exploraciónprogresa de manera autónoma, mediante pasos, a través de una exploración configurada por un conjunto de parámetros de exploraciónespecif icada pormicro-procesadora, el cual conjunto puede incluir el grupo de antenas a ser explorado, el desplazamiento de partida y el ancho de la ventana de exploracióna ser explorada, y la cantidad de símbolos de Walsh, a efectos deacumular los re sultados en cada uno de los desplazamientos. La procesadora de exploracióncalcula la energía de correlación en cada uno de los desplazamientos, y presenta un informe resumido de las mejoras trayectorias halladas enlaexploración para ser util izadas en las reasignaciones de los elementos de demodulación. La exploración es efectuada en una modalidad lineal,independientemente de la probabilidad de que una senal que se está buscando, hubiera sidotransmitida en cualquier tiempo dado

公开(公告)号：FI974132A0

公开(公告)日：1997-11-04

申请号：FI974132

申请日：1997-11-04

Applicant: QUALCOMM INC

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

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20 ,  H04B

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. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.

公开(公告)号：MX9601213A

公开(公告)日：1997-06-28

申请号：MX9601213

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 ,  H04L01/12 ,  H04L01/08

Abstract: Un método y aparatos para controlar la potencia de transmision en un sistema de comunicaciones de proporcion variable. Una estacion de base (30) monitorea la señal de enlace inverso transmitida a partir de una estacion movil (50). La estacion de base (30) determina si una estacion movil (50) debe incrementar o disminuir su potencia en base ya sea a las tasas de error de las series de bits detectadas por un decodificador (44) o por el nivel de potencia de la señal recibida detectada en un receptor (42). En respuesta a este análisis, un procesador de control (46) genera una señal de control de potencia y transmite esta señal a la estacion movil (30).

公开(公告)号：FI970117A0

公开(公告)日：1997-01-10

申请号：FI970117

申请日：1997-01-10

Applicant: QUALCOMM INC

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

IPC: H04B7/005 ,  H04B7/26 ,  H04W24/00 ,  H04W28/22 ,  H04W52/00 ,  H04W52/08 ,  H04W52/12 ,  H04W52/26 ,  H04W74/00 ,  H04J

公开(公告)号：CA2220224A1

公开(公告)日：1996-11-07

申请号：CA2220224

申请日：1996-05-02

Applicant: QUALCOMM INC

Inventor： EASTON KENNETH D ,  PADOVANI ROBERTO ,  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：ZA963188B

公开(公告)日：1996-10-23

申请号：ZA963188

申请日：1996-04-22

Applicant: QUALCOMM INC

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

IPC: H04L1/02 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L27/30 ,  H04Q7/20 ,  H04B ,  H04J

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. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.

公开(公告)号：FI961414A

公开(公告)日：1996-05-20

申请号：FI961414

申请日：1996-03-28

Applicant: QUALCOMM INC

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

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.