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BR9906797A - Processo para ajuste de pelo menos uma caracterìstica de processamento de sinais de um receptor, receptor, e, processo de combate de interferência de canais adjacentes em um receptor - Google Patents

Processo para ajuste de pelo menos uma caracterìstica de processamento de sinais de um receptor, receptor, e, processo de combate de interferência de canais adjacentes em um receptor

Info

Publication number
BR9906797A
BR9906797A BR9906797-8A BR9906797A BR9906797A BR 9906797 A BR9906797 A BR 9906797A BR 9906797 A BR9906797 A BR 9906797A BR 9906797 A BR9906797 A BR 9906797A
Authority
BR
Brazil
Prior art keywords
receiver
adjacent channels
interference
adjusting
bandwidth
Prior art date
Application number
BR9906797-8A
Other languages
English (en)
Inventor
Ali S Khayrallah
Jiann-Ching Guey
Original Assignee
Ericsson Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of BR9906797A publication Critical patent/BR9906797A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B2001/1054—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by changing bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

"PROCESSO PARA AJUSTE DE PELO MENOS UMA CARACTERìSTICA DE PROCESSAMENTO DE SINAIS DE UM RECEPTOR, RECEPTOR, E, PROCESSO DE COMBATE DE INTERFERêNCIA DE CANAIS ADJACENTES EM UM RECEPTOR". Receptor inclui pelo menos dois filtros de freq³ência intermediária (FI), com o primeiro filtro de FI e o segundo filtro tendo uma largura de banda mais estreita do que a primeira largura de banda. O receptor também inclui um comutador operável para selecionar entre os filtros de FI. Em uso, o receptor meda intensidade de sinal de canais adjacentes para a intensidade de sinal de um canal desejado e comuta para o segundo filtro de FI com uma largura de banda mais estreita, quando uma relação da intensidade de sinal do canal e a intensidade de sinal de canais adjacentes é menor do que um limite predeterminado. O limite predeterminado é determinado baseado em considerações de faixa de detecção e interferência de canais adjacentes. A largura de banda dos filtros no receptor também é projetada para otimizar o desempenho em consideração da faixa de detecção e interferência de canais adjacentes.
BR9906797-8A 1998-01-08 1999-01-06 Processo para ajuste de pelo menos uma caracterìstica de processamento de sinais de um receptor, receptor, e, processo de combate de interferência de canais adjacentes em um receptor BR9906797A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/004,481 US6047171A (en) 1998-01-08 1998-01-08 Method and apparatus for combating adjacent channel interference using multiple IF filters
PCT/US1999/000342 WO1999035754A1 (en) 1998-01-08 1999-01-06 Method and apparatus for combating adjacent channel interference using multiple if filters

Publications (1)

Publication Number Publication Date
BR9906797A true BR9906797A (pt) 2000-10-17

Family

ID=21711021

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906797-8A BR9906797A (pt) 1998-01-08 1999-01-06 Processo para ajuste de pelo menos uma caracterìstica de processamento de sinais de um receptor, receptor, e, processo de combate de interferência de canais adjacentes em um receptor

Country Status (8)

Country Link
US (1) US6047171A (pt)
EP (1) EP1046237B1 (pt)
CN (1) CN1130839C (pt)
AU (1) AU2107799A (pt)
BR (1) BR9906797A (pt)
DE (1) DE69906685D1 (pt)
EE (1) EE200000419A (pt)
WO (1) WO1999035754A1 (pt)

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Also Published As

Publication number Publication date
US6047171A (en) 2000-04-04
AU2107799A (en) 1999-07-26
EP1046237A1 (en) 2000-10-25
HK1035973A1 (en) 2001-12-14
EP1046237B1 (en) 2003-04-09
EE200000419A (et) 2002-02-15
CN1288609A (zh) 2001-03-21
WO1999035754A1 (en) 1999-07-15
DE69906685D1 (de) 2003-05-15
CN1130839C (zh) 2003-12-10

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A, 9A E 10A ANUIDADES

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1990 DE 25/02/2009.

B15K Others concerning applications: alteration of classification

Ipc: H04B 1/10 (2006.01)