公开(公告)号：AT402532T

公开(公告)日：2008-08-15

申请号：AT01927018

申请日：2001-04-13

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID ,  PADOVANI ROBERTO ,  BLACK PETER ,  SINDHUSHAYANA NAGABHUSHANA ,  ESTEVES EDUARDO ,  GURELLI MEHMET

IPC: H04L1/00 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L29/08

Abstract: In a high data rate communication system, a method and apparatus for improved throughput while transmitting data packets within multiple time slots. In order to avoid unnecessary retransmissions of a packet, a subscriber station sends a Stop-Repeat signal to a base station, causing the base station to cease further transmissions of the packet. In order to enable successful decoding of a packet, a subscriber station sends a Continue-Repeat signal to a base station, causing the base station to send retransmissions of the packet during time slots beyond a predetermined default number of time slots.

公开(公告)号：AU2003224784B2

公开(公告)日：2008-06-19

申请号：AU2003224784

申请日：2003-03-26

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  SELTMANN KEVIN ,  BLACK PETER J ,  CHALLA RAGHU

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/04 ,  H04B1/16 ,  H04B1/40

Abstract: Systems and techniques for gain control include amplifying a signal with an amplifier having a gain represented by one of a plurality of gain curves depending on a value of a parameter, the signal being amplified at a first one of the parameter values, and controlling the gain of the amplified signal from a predetermined gain curve relating to the gain curve of the amplifier for a second one of the parameter values by adjusting a gain control signal corresponding to a point on the predetermined gain curve as a function of the first one of the parameter values, and applying the adjusted gain control signal to the amplifier. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

公开(公告)号：AT393499T

公开(公告)日：2008-05-15

申请号：AT03744228

申请日：2003-03-04

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER J ,  ATTAR RASHID

IPC: H04B7/005 ,  H04J13/00 ,  H04B7/26 ,  H04L1/00 ,  H04L29/08

Abstract: Methods and apparatus for estimating maximum rate of data and for estimating a transmission power required for transmission of a data with a rate of data in a communication system are disclosed. A terminal determines a quality metric of a communication link, over which data are to be transmitted, and modifies the determined quality metric by a quality metric margin. The terminal then estimates the maximum rate of data in accordance with the modified quality metric. Alternatively, the terminal then estimates transmission power required for transmission of a data with a rate of data in accordance with the rate of data and the modified quality metric. The quality metric margin may be pre-determined or dynamically adjusted. The terminal dynamically adjusts the quality metric margin in accordance with a result of comparison of a transmit power corresponding to the estimated maximum rate of data with an actual transmit power used to transmit the data.

公开(公告)号：BRPI0416322A

公开(公告)日：2007-01-09

申请号：BRPI0416322

申请日：2004-11-10

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID A ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04B7/005 ,  H04B7/26 ,  H04J99/00 ,  H04L12/56 ,  H04W28/18 ,  H04W52/00 ,  H04W52/06 ,  H04W52/12 ,  H04W52/14 ,  H04W52/16 ,  H04W74/00 ,  H04W74/08 ,  H04W88/06 ,  H04Q7/38 ,  H04Q7/26

公开(公告)号：CA2596477A1

公开(公告)日：2006-08-10

申请号：CA2596477

申请日：2006-02-01

Applicant: QUALCOMM INC

Inventor： GURELLI MEHMET ,  PANKAJ RAJESH ,  YAVUZ MEHMET ,  SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID

IPC: H04L1/00 ,  H04W28/04 ,  H04W28/22

公开(公告)号：DE60206748T2

公开(公告)日：2006-07-20

申请号：DE60206748

申请日：2002-01-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  GLAZKO SERGUEI ,  BLACK J

IPC: H04L27/22 ,  H04L27/227 ,  H03L7/081 ,  H04B1/707 ,  H04L27/00

Abstract: A searcher is centered on frequency bins to search for an incoming signal. The frequency locked loop generates an initial phase signal and a phase increment signal that are input to an accumulator. The accumulator accumulates the phase increments over a predetermined interval. After the interval, the accumulator generates a control signal that instructs a rotator to perform a phase rotation function.

公开(公告)号：ES2254649T3

公开(公告)日：2006-06-16

申请号：ES02705847

申请日：2002-01-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  GLAZKO SERGUEI A ,  BLACK PETER J

IPC: H04B1/707 ,  H04L27/00 ,  H04L27/227 ,  H04L27/22 ,  H03L7/081

Abstract: El dispositivo de la reivindicación 7 en el que dichos elementos (120) para realizar una rotación de fase están adaptados para generar un umbral de incremento de fase total sustancialmente equivalente a radianes.

公开(公告)号：BR0209807A

公开(公告)日：2006-02-07

申请号：BR0209807

申请日：2002-05-17

Applicant: QUALCOMM INC

Inventor： SMEE JOHN EDWARD ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04B1/7105 ,  H04B7/02 ,  H04B7/08 ,  H04B1/707

Abstract: Method and apparatus to compute the combiner coefficients for wireless communication systems for a space-time solution. One embodiment trains the weights on a signal known a priori that is time multiplexed with other signals, such as a pilot signal in a High Data Rate, HDR, system, wherein the signal is transmitted at full power. A Minimizing Mean Square Error, MMSE, approach is applied allowing weight combining on a per path basis. The weights are calculated as a function of a noise correlation matrix and spatial signature per path. The noise correlation matrix is determined from an autocorrelation matrix of the received signal. In one embodiment, the MMSE approach is applied to a non-time gated pilot signal.

公开(公告)号：CA2545165A1

公开(公告)日：2005-05-26

申请号：CA2545165

申请日：2004-11-10

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID A

IPC: H04B7/005 ,  H04B7/26 ,  H04J99/00 ,  H04L12/56 ,  H04W28/18 ,  H04W52/00 ,  H04W52/06 ,  H04W52/12 ,  H04W52/14 ,  H04W52/16 ,  H04W74/00 ,  H04W74/08 ,  H04W88/06

Abstract: A communication system includes a plurality of access terminals, and an acce ss network. The access network schedules a transmission of data in a time interval from one of the access terminals. The access network selects a multiple access transmission mode from a plurality of multiple access transmission modes, and broadcasts the selected multiple access transmission mode to the access terminals. The selected mode may include a mode in which data is code-division-multiplexed during the time interval, and modes in whi ch data is code-division-multiplexed during a first portion of the time interva l, and data is either time-division-multiplexed or orthogonal-frequency-divisio n- multiplexed during a second portion of the time interval.

公开(公告)号：BR0208090A

公开(公告)日：2005-05-10

申请号：BR0208090

申请日：2002-03-15

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  HOLTZMAN JACK ,  LING FUNYUN ,  SANTS KEITH ,  SINDHUSHAYANA NAGABHUSHANA ,  WHEATLEY CHARLES E III

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  H04B1/00

Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics include one of a re-encoded power metric and a modified Yamamoto metric. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.