公开(公告)号：DE19806095C2

公开(公告)日：2003-12-18

申请号：DE19806095

申请日：1998-02-14

Applicant: MOTOROLA INC

Inventor： STORM BRIAN D ,  LAROSA CHRISTOPHER PETER

IPC: H03K5/00 ,  H04B1/16 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/26 ,  H04L7/00 ,  H04Q7/20

Abstract: A searcher receiver (114) includes a sample buffer (202) which stores signal samples loaded using a real time clock. A real time linear sequence generator (RT LSG) (206) stores an initial state and is clocked using the real time clock. The contents of the RT LSG are loaded into a non-real time linear sequence generator (NRT LSG) (208) when sample processing begins Samples are correlated using a non-real time clock to allow signal processing to be uncoupled from the chip rate. The analog front end (108) may be powered down or tuned to another frequency during non-real time processing.

公开(公告)号：DE19808487C2

公开(公告)日：2002-05-29

申请号：DE19808487

申请日：1998-02-27

Applicant: MOTOROLA INC

Inventor： STORM BRIAN D ,  CALLICOTTE MARK J ,  CAHILL STEPHEN V

IPC: H04B1/16 ,  H04B7/26 ,  H04M19/08 ,  H04W52/02 ,  H04Q7/20 ,  H04Q7/32 ,  H03G3/30 ,  H04B1/38 ,  H04B7/216

Abstract: A radiotelephone (104) in a radiotelephone system (100) enters a low power sleep mode and times the duration of the sleep mode using a sleep clock generator (205) having a coarse resolution. The radiotelephone synchronizes timing of the radiotelephone to system timing using an oscillator (116) having a fine resolution. The radiotelephone then exits the low power sleep mode synchronized with system timing.

公开(公告)号：GB2323501B

公开(公告)日：2001-08-22

申请号：GB9801291

申请日：1998-01-20

Applicant: MOTOROLA INC

Inventor： FRANK COLIN D ,  HONKISZ JENNIFER A ,  STORM BRIAN D

IPC: H04B7/26 ,  H04Q7/36

公开(公告)号：HU9800432A2

公开(公告)日：1998-10-28

申请号：HU9800432

申请日：1998-02-27

Applicant: MOTOROLA INC

Inventor： LA ROSA CHRISTOPHER PETER ,  STORM BRIAN D

IPC: H03K5/00 ,  H04B1/16 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/26 ,  H04L7/00 ,  H04B7/24

Abstract: A searcher receiver (114) includes a sample buffer (202) which stores signal samples loaded using a real time clock. A real time linear sequence generator (RT LSG) (206) stores an initial state and is clocked using the real time clock. The contents of the RT LSG are loaded into a non-real time linear sequence generator (NRT LSG) (208) when sample processing begins Samples are correlated using a non-real time clock to allow signal processing to be uncoupled from the chip rate. The analog front end (108) may be powered down or tuned to another frequency during non-real time processing.

公开(公告)号：GB2324225A

公开(公告)日：1998-10-14

申请号：GB9800561

申请日：1998-01-21

Applicant: MOTOROLA INC

Inventor： CALLICOTTE MARK ,  STORM BRIAN D

IPC: H04B7/26 ,  H04B1/16 ,  H04W52/02 ,  H04W52/42 ,  H04Q7/32

Abstract: A radio telephone 104 operating in a CDMA slotted paging mode calculates the timing required to wake up selected portions of the telephone and stores the wake up times in registers prior to entering a low power sleep mode. Prior to entry into the sleep mode the telephone also synchronises its local timing to the received PN roll boundaries (PN sequence returning to its initial value). During the sleep mode a sleep timer simulates system timing. When the sleep timer matches the stored wake up times, the telephone reactivates selected portions of itself, such as a local oscillator 116 and a radio frequency portion of an analogue front end 108, to exit the sleep mode and reacquire communication with the system. An early exit may be made from the sleep mode, for example to service an interrupt, while maintaining system timing.

公开(公告)号：GB2323501A

公开(公告)日：1998-09-23

申请号：GB9801291

申请日：1998-01-20

Applicant: MOTOROLA INC

Inventor： FRANK COLIN D ,  HONKISZ JENNIFER A ,  STORM BRIAN D

IPC: H04B7/26 ,  H04Q7/36

Abstract: A radiotelephone 121 employs a service detection circuit 125 comprising at least one chip-rate detector 109 that measures the energy of the autocorrelation of a received composite CDMA signal and employs a different time delay for each measurement of the energy. A threshold detection circuit 127 combines the measured energies and determines that service is available if the combined energies exceeds a threshold, and determines service is unavailable otherwise. The chip-rate detectors 109 can be coupled in parallel to provide simultaneous measurements of the energy of the autocorrelation of the received composite CDMA signal, or a single chip-rate detector 109 can serially measure the energy of the autocorrelation of the received composite CDMA signal.

公开(公告)号：FR2760303A1

公开(公告)日：1998-09-04

申请号：FR9800203

申请日：1998-01-12

Applicant: MOTOROLA INC

Inventor： FRANK COLIN D ,  HONKISZ JENNIFER A ,  STORM BRIAN D

IPC: H04B7/26 ,  H04Q7/36 ,  H04L12/18 ,  H04B7/216 ,  H04Q7/22

公开(公告)号：PL325087A1

公开(公告)日：1998-08-31

申请号：PL32508798

申请日：1998-02-27

Applicant: MOTOROLA INC

Inventor： STORM BRIAN D ,  LAROSA CHRISTOPHER PETER

IPC: H03K5/00 ,  H04B1/16 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/26 ,  H04L7/00 ,  H04Q7/20 ,  H04B7/216

Abstract: A searcher receiver (114) includes a sample buffer (202) which stores signal samples loaded using a real time clock. A real time linear sequence generator (RT LSG) (206) stores an initial state and is clocked using the real time clock. The contents of the RT LSG are loaded into a non-real time linear sequence generator (NRT LSG) (208) when sample processing begins Samples are correlated using a non-real time clock to allow signal processing to be uncoupled from the chip rate. The analog front end (108) may be powered down or tuned to another frequency during non-real time processing.

公开(公告)号：MX9801560A

公开(公告)日：1998-08-30

申请号：MX9801560

申请日：1998-02-26

Applicant: MOTOROLA INC

Inventor： STORM BRIAN D ,  LAROSA CHRISTOPHER PETER

IPC: H03K5/00 ,  H04B1/16 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/26 ,  H04L7/00 ,  G11B3/00

Abstract: Un receptor buscador (114) incluye una memoria intermedia de muestreo (202) que almacena muestras de señales cargadas utilizando un reloj de tiempo real. Un generador de secuencia lineal de tiempo real (RT LSG) (206) guarda un estado inicial; se utiliza un reloj de tiempo real para cronometrar este generador. Se cargan los contenidos del RT LSG en un generador de secuencia lineal de tiempo no real (NRT LSG) (208) cuando comienza el procesamiento de las muestras. Se lleva a cabo una correlacion de las muestras usando el reloj de tiempo irreal para permitir que el procesamiento de señales se desconecte de la velocidad en chips. Es posible anular la alimentacion al extremo análogo (108) o sintonizarlo en otra frecuencia durante el procesamiento de tiempo no real.

公开(公告)号：MX9706516A

公开(公告)日：1998-02-28

申请号：MX9706516

申请日：1997-08-27

Applicant: MOTOROLA INC

Inventor： STORM BRIAN D ,  KRAUSE DAVID J

IPC: H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/216 ,  H04W36/30 ,  H04W36/36 ,  H04W72/08 ,  H04B07/00

Abstract: Un dispositivo de comunicacion inalámbrica (100) adquiere un canal piloto antes de una ranura asignada cuando el dispositivo de comunicacion inalámbrica está funcionando con el modo ranurado de un sistema CDMA. El dispositivo de comunicacion inalámbrica comprende un receptor buscador (107) que determina la intensidad piloto promedio de corto plazo de los canales activo y piloto vecinos. Los receptores de dedos (107) determinan la intensidad piloto promedio de largo plazo de los canales activo y piloto vecinos. Un circuito logico y de control (113) asigna los receptores de dedos a los canales piloto de conformidad con sus intensidades piloto promedio de corto plazo, determina si la intensidad piloto promedio de largo plazo de un canal vecino es mayor que la intensidad piloto del canal piloto activo y, determina el transferir al canal piloto vecino que tiene la intensidad piloto promedio de largo plazo más grande. Además, un tramo o longitud de correlacion de deteccion temprana puede ajustarse en forma dinámica de conformidad con la intensidad piloto del canal piloto activo para acortar el proceso de adquisicion de canal piloto.