公开(公告)号：AU2005267807B2

公开(公告)日：2010-03-04

申请号：AU2005267807

申请日：2005-07-29

Applicant: QUALCOMM INC

Inventor： MURALI RAMASWAMY ,  WANG MICHAEL MAO ,  VIJAYAN RAJIV ,  LING FUYUN

IPC: H04L1/00

Abstract: A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

公开(公告)号：AU2005267809B2

公开(公告)日：2010-02-11

申请号：AU2005267809

申请日：2005-07-29

Applicant: QUALCOMM INC

Inventor： WANG MICHAEL MAO ,  LING FUYUN ,  MURALI RAMASWAMY ,  VIJAYAN RAJIV

Abstract: A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

公开(公告)号：CA2693924A1

公开(公告)日：2009-05-07

申请号：CA2693924

申请日：2008-10-31

Applicant: QUALCOMM INC

Inventor： LING FUYUN ,  CHARI MURALI RAMASWAMY ,  MANTRAVADI ASHOK ,  KRISHNAMOORTHI RAGHURAMAN

IPC: H04L5/00

Abstract: Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in 'super-frames'. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

公开(公告)号：AU2004307128C1

公开(公告)日：2008-10-09

申请号：AU2004307128

申请日：2004-10-22

Applicant: QUALCOMM INC

Inventor： LING FUYUN ,  MANTRAVADI ASHOK ,  MURALI RAMASWAMY ,  WALKER KENT G ,  VIJAYAN RAJIV ,  SUBRAMANIAM ANAND D

IPC: H04L12/18 ,  H04L12/56 ,  H04W74/04 ,  H04W88/08

Abstract: A method of broadcasting data in a wireless broadcast network, comprising multiplexing data for a wide-area transmission onto a first transmission span, the wide-area transmission being sent from a plurality of transmitters in the network; multiplexing data for a local transmission onto a second transmission span, wherein the multiplexing is onto frequency subbands pseudo-randomly selected from among all usable frequency subbands and the local transmission being sent from a subset of the plurality of transmitters; selecting the first and second transmission spans based on an amount of data to broadcast for the wide-area transmission and an amount of data to broadcast for the local transmission; and broadcasting the local and wide-area transmissions via a wireless link, wherein the data for the wide-area transmission and the data for the local transmission are time division multiplexed (TDM) at each base station, and wherein the first and second transmission spans are first and second time segments, respectively, of a frame of a predetermined time duration as well as a corresponding system.

公开(公告)号：AT383019T

公开(公告)日：2008-01-15

申请号：AT01918775

申请日：2001-03-15

Applicant: QUALCOMM INC

Inventor： LING FUYUN

IPC: H03M13/29 ,  H04L25/03 ,  H03M13/45 ,  H04B1/10 ,  H04L1/00

Abstract: A method of communications channel coding gain optimization using combined ISI cancellation and turbo decoding is provided. Log-likelihood ratio probabilities with extrinsic values are computed from previous iterations of turbo decoding and used to compute the soft-decision values of channel symbols. The soft-decision values are then used to perform intersymbol interference cancellation and generate refined channel log-likelihood ratio probabilities for the next iteration of turbo decoding.

公开(公告)号：AU2002255729B2

公开(公告)日：2007-10-25

申请号：AU2002255729

申请日：2002-03-15

Applicant: QUALCOMM INC

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

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

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.

公开(公告)号：AR055663A1

公开(公告)日：2007-08-29

申请号：ARP060104250

申请日：2006-09-27

Applicant: QUALCOMM INC

Inventor： LING FUYUN ,  WALKER KENT G ,  MUKKAVILLI KRISHNA KIRAN

IPC: G01S19/11 ,  G01S5/02 ,  H04W64/00 ,  H04Q7/38

Abstract: Métodos y disposicion para determinar informacion de ubicacion de posicion en una red inalámbrica. En una forma de realizacion, la informacion de desplazamiento de temporizacion se comunica entre multiples transmisores y uno o más receptores. Dicha informacion permite efectuar determinaciones exactas de posicion o de ubicacion que tienen cuenta las diferencias de temporizacion a través de la red. En otra forma de realizacion, se efectuan ajustes de fase del transmisor que adelantan o retardan las transmisiones desde los transmisores a efectos de tener en cuenta las diferencias potenciales de temporizacion en los receptores. Y en otra forma de realizacion más, pueden emplearse combinaciones de comunicaciones de desplazamiento de temporizacion y/o de ajustes de fase de transmisor en la red inalámbrica, para facilitar determinaciones de ubicacion de posicion.

公开(公告)号：MX2007001162A

公开(公告)日：2007-07-11

申请号：MX2007001162

申请日：2005-07-29

Applicant: QUALCOMM INC

Inventor： LING FUYUN ,  VIJAYAN RAJIV ,  MURALI RAMASWAMY ,  WANG MICHAEL MAO

IPC: H04L1/00

Abstract: Un sistema y metodo para diversidad de frecuencia utiliza intercalacion; las sub-portadores de un entrelazado son intercaladas en una forma de inversion de bit y los entrelazados son intercalados en la forma de inversion de bit.

公开(公告)号：NO20070990L

公开(公告)日：2007-04-30

申请号：NO20070990

申请日：2007-02-21

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  LING FUYUN ,  MURALI RAMASWAMY ,  WANG MICHAEL MAO

IPC: H04J11/00 ,  H03M13/39

Abstract: A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

公开(公告)号：MXPA06010073A

公开(公告)日：2006-12-15

申请号：MXPA06010073

申请日：2005-02-25

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  LING FUYUN

IPC: H04L1/00 ,  H04L25/03

Abstract: Para un canal iterativo y para el esquema de codificacion de calculo y descodificacion de interferencia, inicialmente se obtiene la informacion anterior de la ganancia e interferencia del canal basada en los simbolos piloto recibidos. La informacion directa para los bits de codigo correspondientes a los simbolos de datos recibidos es calculada basada en los simbolos de datos recibidos y la informacion anterior y luego es descodificada para obtener informacion de retroalimentacion para los bits de codigo correspondientes a los simbolos de datos recibidos. A posteriori, se calcula la informacion de la ganancia e interferencia del canal por cada simbolo de datos recibido basadas en la informacion de retroalimentacion para el simbolo de datos recibido. La informacion a posteriori para los simbolos de datos recibidos y la informacion anterior son combinadas para obtener informacion actualizada de la ganancia e interferencia del canal por cada simbolo de datos recibido. El proceso se puede repetir para cualquier numero de iteraciones. La informacion anterior, a posteriori y actualizada puede ser representada por las distribuciones conjuntas de probabilidad sobre la ganancia e interferencia del canal. La informacion directa y de retroalimentacion puede ser representada por proporciones de probabilidad de registro.