公开(公告)号：WO0077995A9

公开(公告)日：2002-07-11

申请号：PCT/US0015974

申请日：2000-06-09

Applicant: QUALCOMM INC

Inventor： RIDDLE CHRISTOPHER C ,  LEVIN JEFFREY A

IPC: H04L25/02

CPC classification number: H04L25/0262

Abstract: A Wireless Code Division Multiple Access method and apparatus for determining the transmitted rate of a voice/data signal from a mobile station to a Base Station. Variable rate vocoders transmit voice at one of several predetermined frame rates. The receiver determines the transmitted rate based on one of several frame parameters. One of the parameters is received frame energy. The received frame energy is measured over the length of the relevant portion of the frame. Energy is measured over the half of the frame that can only contain energy if a full rate frame is sent. If the energy measured exceeds a threshold, then full rate is indicated. Else, energy is measured over the fourth of a frame that can only contain energy if a half rate frame is sent. If the energy exceeds a threshold, then half rate is indicated. The procedure is repeated for quarter and eighth rates.

Abstract translation: 一种用于确定从移动台到基站的语音/数据信号的传输速率的无线码分多址方法和装置。 可变速率声码器以几个预定帧速率之一发送语音。 接收机基于几个帧参数之一确定传输速率。 其中一个参数是接收帧能量。 在帧的相关部分的长度上测量所接收的帧能量。 如果发送全速率帧，则在帧的一半上测量能量，其仅能够包含能量。 如果测量的能量超过阈值，则表示全速率。 否则，如果发送半速率帧，则在帧的四分之一处测量能量，其仅能够包含能量。 如果能量超过阈值，则表示半速率。 对于第四季度和第八季度，重复该过程。

公开(公告)号：DE69838557T2

公开(公告)日：2008-07-24

申请号：DE69838557

申请日：1998-11-10

Applicant: QUALCOMM INC

Inventor： MILLER DAVID S ,  VIJAYAN RAJIV ,  ZEHAVI EPHRAIM ,  LEVIN JEFFREY A

IPC: H04B7/26 ,  H04B1/707 ,  H04B7/185 ,  H04B7/216 ,  H04Q7/36

公开(公告)号：CA2309062C

公开(公告)日：2008-07-22

申请号：CA2309062

申请日：1998-11-10

Applicant: QUALCOMM INC

Inventor： MILLER DAVID S ,  VIJAYAN RAJIV ,  ZEHAVI EPHRAIM ,  LEVIN JEFFREY A

IPC: H04B1/707 ,  H04B7/185 ,  H04B7/216 ,  H04B7/26 ,  H04Q7/36

Abstract: The present invention is a system and method for increasing user capacity on a slotted random access channel in a spread spectrum communications system (10 0) by using a multi-part access probe (502). First and second parts (508, 510) of an access probe preamble (604) are modulated using a short PN code sequence (620), and the second part and remainder of the access probe (502) is modulated using a long PN code sequence. Information to be transmitted by th e access probe (502) is modulated on the second part (606) of the access probe (502), and the access probe is transmitted so that the first part (508) of t he probe preamble (604) falls within the boundaries of an access channel slot (402). In one embodiment, time slots (402) in access channels (400) used for access signal reception are made the length of the first part (508). In a further embodiment, time slots (402) in a plurality of adjacent access channels used for access signal reception may be longer than said first part (508) but are offset in time from each other by the length or period of the first part.

公开(公告)号：NO324203B1

公开(公告)日：2007-09-10

申请号：NO20012829

申请日：2001-06-08

Applicant: QUALCOMM INC

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

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

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：NO323718B1

公开(公告)日：2007-06-25

申请号：NO20013839

申请日：2001-08-07

Applicant: QUALCOMM INC

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

IPC: H04B1/7085

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：NO20070422A

公开(公告)日：2007-03-30

申请号：NO20070422

申请日：2007-01-23

Applicant: QUALCOMM INC

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

IPC: H04B1/707

CPC classification number: H04B1/7107 ,  H04B2201/70701

公开(公告)号：ECSP077211A

公开(公告)日：2007-02-28

申请号：ECSP077211

申请日：2007-01-29

Applicant: QUALCOMM INC

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

IPC: H04B1/707

Abstract: Métodos y sistemas para estimar y cancelar la interferencia piloto en un sistema de comunicación inalámbrica (por ejemplo CDMA). En un método, una señal recibida comprendida de un número de instancias de señal, cada una incluyendo un piloto, es inicuamente procesada para proporcionar muestras de datos. Cada interferencia piloto de la instancia de señal puede ser estimada mediante la diseminación de las muestras de datos con una secuencia diseminadora para la instancia de señal, canalizando los datos de-diseminados para proporcionar símbolos pilotos, filtrar los símbolos pilotos para estimar la respuesta del canal a la instancia de señal, y multiplicar la respuesta del canal estimada con la secuencia de diseminación. Los estimados de la interferencia piloto debido a una pluralidad de multi-direccionales interferentes se acumulan para derivar la interferencia piloto total, la cual se resta de las muestras de datos para proporcionar muestras de datos piloto-canceladas. Estas muestras son entonces procesadas para derivar datos de-modulados para cada una de al menos una instancia de señal (deseado) en la señal recibida

公开(公告)号：BR0210418A

公开(公告)日：2006-11-14

申请号：BR0210418

申请日：2002-06-13

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  THYAGARAJAN KADAYAM ,  LEVIN JEFFREY A

IPC: H03M7/30 ,  H04N7/26 ,  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：BRPI0410652A

公开(公告)日：2006-07-04

申请号：BRPI0410652

申请日：2004-05-28

Applicant: QUALCOMM INC

Inventor： KINDRED DANIEL R ,  LEVIN JEFFREY A ,  HALTER STEVEN J

IPC: H04B1/707

Abstract: Techniques for polling fingers on a channel (which are fingers for which symbols are to be combined) to determine the last finger on the channel. As each finger is polled, the polled finger compares its state information with the state information for the channel to determine whether or not it is the last finger on the channel. The polled finger may be deemed as the last finger if (1) the polled finger is the current last finger, (2) the polled finger is later than the current last finger, or (3) all fingers on the channel have been polled and none of the fingers indicated that it is the last finger. If the polled finger is deemed as the last finger then, (1) the channel state information is updated with the polled finger state information, and (2) the symbols provided by the polled finger may be marked as being ready for subsequent processing.

公开(公告)号：ES2251253T3

公开(公告)日：2006-04-16

申请号：ES99964215

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: Receptor adaptado para recibir señales de trayectorias múltiples que incluye una pluralidad de ramas, estando cada una de ellas adaptada para: a)demodular por separado la señal recibida actualmente desde cada trayectoria separada; y b)medir la energía de comparación entre la señal recibida actualmente por la rama y cada símbolo de canal posible de una biblioteca de símbolos de canales; caracterizado porque comprende: c)una pluralidad de unidades de almacenamiento de energía, en la que cada unidad de almacenamiento de energía está asociada a una rama y está adaptada para: i)almacenar la medición de la energía de comparación entre cada símbolo de canal posible y la señal recibida anteriormente por dicha rama; ii) recibir un índice del combinador indicado a continuación, determinando el índice de forma exclusiva un símbolo de canal posible; iii) decidir si la energía de comparación entre el símbolo de canal determinado y la señal recibida anteriormente es significativa; y iv) aplicar una versión escalada de la señal recibida actualmente al combinador si y solo si la energía de comparación es significativa; y d)un combinador que está adaptado para: i)combinar las versiones escaladas de las señales recibidas actualmente en una señal combinada; ii) medir la energía de comparación entre la señal combinada y cada símbolo de canal posible de la biblioteca de símbolos de canales; iii) determinar el índice para el símbolo de canal que proporciona la energía de comparación máxima con la señal combinada; iv) proporcionar como retroalimentación el índice a las unidades de almacenamiento de energía; y v)transmitir el índice para un procesamiento adicional.