公开(公告)号：AT411647T

公开(公告)日：2008-10-15

申请号：AT03783405

申请日：2003-11-12

Applicant: QUALCOMM INC

Inventor： BJERKE BJORN ,  KETCHUM JOHN ,  SINDHUSHAYANA NAGABHUSHANA ,  WALTON JAY

IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00

Abstract: Method and apparatus for generating codewords with variable length and redundancy from a single Low-Density Parity-Check (LDPC) code with variable length input words. A mother code for encoding data words is generated based on a parity-check matrix, wherein the mother code is adjusted to reflect the size of the data word to be encoded. A generator matrix applies the mother code to data words to produce codewords for transmission. In one embodiment, a reduction criteria is determined and the size of the generator matrix reduced in response. The corresponding parity-check matrix is applied at the receiver for decoding the received codeword.

公开(公告)号：AT400082T

公开(公告)日：2008-07-15

申请号：AT03721474

申请日：2003-03-26

Applicant: QUALCOMM INC

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

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/04 ,  H04B1/16 ,  H04B1/38 ,  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：SG143072A1

公开(公告)日：2008-06-27

申请号：SG2006061782

申请日：2003-03-04

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER J ,  ATTAR RASHID A

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

Abstract: METHOD AND APPARATUS FOR ESTIMATING POWER REQUIRED FOR TRANSMISSION OF DATA AT A RATE IN A COMMUNICATION SYSTEM Methods and apparatus for estimating a transmission power required for transmission of data and detecting an outage 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 may declare an outage event when power required for transmission of a reference signal exceeds power required for transmission of the reference signal determined form the modified quality metric. Alternatively, the terminal may estimate transmission power required for transmission of data in accordance with the modified quality metric. The quality metric margin may be a pre-determined or dynamically adjusted.

公开(公告)号：SG143071A1

公开(公告)日：2008-06-27

申请号：SG2006060735

申请日：2003-03-04

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER J ,  ATTAR RASHID A

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

Abstract: METHOD AND APPARATUS FOR ESTIMATING A MAXIMUM RATE OF DATA AND FOR ESTIMATING POWER REQUIRED FOR TRANSMISSION OF DATA AT A RATE OF DATA IN A COMMUNICATION SYSTEM Methods and apparatus for estimating a transmission power required for transmission of data and detecting an outage 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 may declare an outage event when power required for transmission of a reference signal exceeds power required for transmission of the reference signal determined form the modified quality metric. Alternatively, the terminal may estimate transmission power required for transmission of data in accordance with the modified quality metric. The quality metric margin may be a pre-determined or dynamically adjusted.

公开(公告)号：CA2616001A1

公开(公告)日：2007-02-01

申请号：CA2616001

申请日：2006-07-19

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID AHMED AKBAR ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04W28/22

Abstract: In one embodiment, the patent application comprises an apparatus, method and means for expanding DRC indices comprising assigning multiple DRC covers to at least one sector. In another embodiment, the apparatus, method and means for expanding DRC indices further comprises creating an expanded DRC indices list, sending a mapping of DRC covers to the expanded DRC indices list to an access terminal, and using the mapping to determine a sector and DRC index from the DRC indices list on requests for transmission from the access terminal.

公开(公告)号：DE60206748D1

公开(公告)日：2006-03-02

申请号：DE60206748

申请日：2002-01-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  GLAZKO SERGUEI ,  BLACK J

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

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：BRPI0407546A

公开(公告)日：2006-03-01

申请号：BRPI0407546

申请日：2004-02-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID A ,  REZAIIFAR RAMIN

IPC: H04L12/56

Abstract: Method and apparatus for variable length Physical Layer (PL) packet generation. Multiple Security Layer (SL) packets may be multiplexed into a single PL packet to increase efficiency, wherein the SL packets may have variable lengths. In one embodiment, different format SL packets for different users are combined into capsules that form the PL packet. Shorter packets are for users in poor channel conditions or requiring smaller amounts of data due to the applications and the accompanying Quality of Service (QoS) requirements. In one embodiment, a modified Preamble structure provides for Unicast or multi-user packets. Alternate embodiment provides modified Rate Sets, a mechanism for identifying ACK from a single-user packet or a multiplexed packet (delayed ACK). ON/OFF keying for ACK channel v/s bi-polar keying used in IS-856, and/or multi-valued interpretation of DRC.

公开(公告)号：BR0206570A

公开(公告)日：2005-01-18

申请号：BR0206570

申请日：2002-01-18

Applicant: QUALCOMM INC

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

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

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：CA2516384A1

公开(公告)日：2004-09-02

申请号：CA2516384

申请日：2004-02-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID A ,  REZAIIFAR RAMIN

IPC: H04L12/56

Abstract: Method and apparatus for variable length Physical Layer (PL) packet generation. Multiple Security Layer (SL) packets may be multiplexed into a single PL packet to increase efficiency, wherein the SL packets may have variable lengths. In one embodiment, different format SL packets for different users are combined into capsules that form the PL packet. Shorter packets are for users in poor channel conditions or requiring smaller amounts of data due to the applications and the accompanying Quality of Service (QoS) requirements. In one embodiment, a modified Preamble structure provides for Unicast or multi-user packets. Alternate embodiment provides modified Rate Sets, a mechanism for identifying ACK from a single-user packet or a multiplexed packet (delayed ACK). ON/OFF keying for ACK channel v/s bi-polar keying used in IS-856, and/or multi-valued interpretation of DRC.

公开(公告)号：DE60005797T2

公开(公告)日：2004-08-12

申请号：DE60005797

申请日：2000-01-28

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  HOLTZMAN M ,  SAINTS KEITH ,  WHEATLEY E ,  LING FUYUN ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26

Abstract: A power control system for controlling the transmission power in a system wherein the transmission power may be gated or capped. The receiver employs a combination of closed loop and outer loop power control. The outer loop is frozen upon detection by the receiver that the signal has been capped or gated.