公开(公告)号：JP2010252353A

公开(公告)日：2010-11-04

申请号：JP2010118280

申请日：2010-05-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MATHE LENNART

IPC: H03H17/02 ,  H03H17/04 ,  H03H17/06 ,  H03K19/173 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

CPC classification number: H03H17/0294 ,  H03H17/0288

Abstract: PROBLEM TO BE SOLVED: To provide a space-efficient low-power programmable digital filter which is adapted to use with a telecommunications system transceiver, and can accommodate a range of input frequencies or sample rates. SOLUTION: A digital filter includes: a first finite impulse response filter section 16 having a first transfer function; an infinite impulse response filter section 18 having a second transfer function and being connected to the first finite impulse response filter section 16; a second finite impulse response filter section 20 being connected to the infinite impulse response filter section 18, outputting a filtered output signal in response to reception of an input signal by the programmable digital filter and having a third transfer function; and a means for supplying a programmable coefficient in the first, second or third transfer function. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供适合与电信系统收发器一起使用的节省空间的低功率可编程数字滤波器，并且可以适应一定范围的输入频率或采样率。 数字滤波器包括：具有第一传递函数的第一有限脉冲响应滤波器部分16; 具有第二传递函数并连接到第一有限脉冲响应滤波器部分16的无限脉冲响应滤波器部分18; 第二有限脉冲响应滤波器部分20连接到无限脉冲响应滤波器部分18，响应于由可编程数字滤波器接收输入信号并具有第三传递函数而输出滤波后的输出信号; 以及用于在第一，第二或第三传递函数中提供可编程系数的装置。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：DE60013108T2

公开(公告)日：2005-08-18

申请号：DE60013108

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：AT274258T

公开(公告)日：2004-09-15

申请号：AT00928150

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：AU765994B2

公开(公告)日：2003-10-09

申请号：AU2053100

申请日：1999-12-14

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/04 ,  H03H17/02 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first transfer function. An infinite impulse response filter section (18) is connected to the first finite impulse response filter section and has a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and outputs a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：CA2354627A1

公开(公告)日：2000-06-22

申请号：CA2354627

申请日：1999-12-14

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/04 ,  H03H17/02 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal a nd having a first transfer function. An infinite impulse response filter sectio n (18) is connected to the first finite impulse response filter section and ha s a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and output s a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：CA2354627C

公开(公告)日：2012-05-01

申请号：CA2354627

申请日：1999-12-14

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/02 ,  H03H17/04 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first transfer function. An infinite impulse response filter section (18) is connected to the first finite impulse response filter section and has a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and outputs a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：DE60031895T2

公开(公告)日：2007-08-30

申请号：DE60031895

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：AU4642700A

公开(公告)日：2000-11-14

申请号：AU4642700

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：DE60031895D1

公开(公告)日：2006-12-28

申请号：DE60031895

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：AT345599T

公开(公告)日：2006-12-15

申请号：AT03009461

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.