公开(公告)号：EP1186116B1

公开(公告)日：2004-11-17

申请号：EP00926267.6

申请日：2000-04-21

Applicant: QUALCOMM Incorporated

Inventor： BLESSENT, Luca ,  MOTIWALA, Quaeed

IPC: H04B7/005

CPC classification number: H04W52/20 ,  H04B1/7113 ,  H04B2201/70701 ,  H04L25/0224 ,  H04L2027/0046 ,  H04L2027/0065 ,  H04L2027/0093 ,  H04W52/143

Abstract: The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign demodulation circuit for determining the sign of the information symbols in response to the pilot channel symbols. A continuous pilot generator generates a non-punctured pilot channel of predetermined sign from the information symbols and the pilot channel symbols. In a first embodiment, the information sign demodulator further comprises a dot product circuit for calculating a dot product of the pilot channel symbols and the punctured information symbols, and a threshold comparator for comparing the dot product to a predetermined threshold.

公开(公告)号：EP1142146A1

公开(公告)日：2001-10-10

申请号：EP00904294.6

申请日：2000-01-11

Applicant: QUALCOMM Incorporated

Inventor： AGRAWAL, Avneesh ,  BENDER, Paul, E. ,  BLESSENT, Luca ,  BUTLER, Brian, K. ,  MOTIWALA, Quaeed

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B2201/70701

Abstract: A novel and improved method and apparatus for coherent demodulation in the presence of phase discontinuities is described. The pilot signal is prepared for optimal coherent demodulation by the use of two filters: one capable of withstanding the effects of phase discontinuity; a second providing superior filtering performance than the first so long as phase discontinuities are not present. Both filters are simultaneously operated. In the exemplary embodiment of the present invention, a sliding window filter (410) is employed for the superior performing filter absent phase discontinuity and a block filter (440) is employed for use when phase discontinuities are present.

公开(公告)号：EP1066559B1

公开(公告)日：2005-06-08

申请号：EP99911150.3

申请日：1999-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： SIH, Gilbert, C. ,  ZOU, Quizhen ,  JHA, Sanjay, K. ,  KANG, Inyup ,  LIN, Jian ,  MOTIWALA, Quaeed ,  JOHN, Deepu ,  ZHANG, Li ,  ZHANG, Haitao ,  LEE, Way-Shing ,  SAKAMAKI, Charles, E. ,  KANTAK, Prashant, A.

IPC: G06F9/30 ,  G06F9/38

CPC classification number: G06F12/0886 ,  G06F9/30036 ,  G06F9/30105 ,  G06F9/30112 ,  G06F9/3012 ,  G06F9/30141 ,  G06F9/30149 ,  G06F9/3016 ,  G06F9/30167 ,  G06F9/3816 ,  G06F9/3885 ,  G06F9/3893 ,  G06F15/7807

公开(公告)号：EP1354422A2

公开(公告)日：2003-10-22

申请号：EP02704213.4

申请日：2002-01-17

Applicant: QUALCOMM INCORPORATED

Inventor： MOTIWALA, Quaeed ,  RIDDLE, Christopher, C. ,  BLESSENT, Luca ,  YEH, Shih-Yi ,  FUCHS, Robert, J.

IPC: H04B1/707 ,  H04B7/26 ,  H04Q7/38

CPC classification number: H04B1/7117 ,  H04B7/2659 ,  H04B2201/70707

Abstract: The frame of data is partitioned into a plurality of portions of data symbols. A plurality of channel elements (300) is assigned to demodulate data symbols of correspondingly the plurality of portions of data symbols. The number of the plurality of portions of data symbols is higher in a case at high data rate than a case at low data rate.

公开(公告)号：EP1186116A1

公开(公告)日：2002-03-13

申请号：EP00926267.6

申请日：2000-04-21

Applicant: QUALCOMM Incorporated

Inventor： BLESSENT, Luca ,  MOTIWALA, Quaeed

IPC: H04B7/005

CPC classification number: H04W52/20 ,  H04B1/7113 ,  H04B2201/70701 ,  H04L25/0224 ,  H04L2027/0046 ,  H04L2027/0065 ,  H04L2027/0093 ,  H04W52/143

Abstract: The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign demodulation circuit for determining the sign of the information symbols in response to the pilot channel symbols. A continuous pilot generator generates a non-punctured pilot channel of predetermined sign from the information symbols and the pilot channel symbols. In a first embodiment, the information sign demodulator further comprises a dot product circuit for calculating a dot product of the pilot channel symbols and the punctured information symbols, and a threshold comparator for comparing the dot product to a predetermined threshold.

公开(公告)号：EP1066559A1

公开(公告)日：2001-01-10

申请号：EP99911150.3

申请日：1999-03-04

Applicant: QUALCOMM Incorporated

Inventor： SIH, Gilbert, C. ,  ZOU, Quizhen ,  JHA, Sanjay, K. ,  KANG, Inyup ,  LIN, Jian ,  MOTIWALA, Quaeed ,  JOHN, Deepu ,  ZHANG, Li ,  ZHANG, Haitao ,  LEE, Way-Shing ,  SAKAMAKI, Charles, E. ,  KANTAK, Prashant, A.

IPC: G06F9/30 ,  G06F9/38

CPC classification number: G06F12/0886 ,  G06F9/30036 ,  G06F9/30105 ,  G06F9/30112 ,  G06F9/3012 ,  G06F9/30141 ,  G06F9/30149 ,  G06F9/3016 ,  G06F9/30167 ,  G06F9/3816 ,  G06F9/3885 ,  G06F9/3893 ,  G06F15/7807

Abstract: A circuit for digital signal processing calls for the use of a variable length instruction set. An exemplary DSP includes a set of three data buses (108, 110, 112) over which data may be exchanged with a register bank (120) and three data memories (102, 103, 104). A register bank (120) may be used that has registers accessible by at least two processing units (128, 130). An instruction fetch unit (156) may be included that receives instructions of variable length stored in an instruction memory (152). The instruction memory (152) may be separate from the set of three data memories (102, 103, 104).