[go: up one dir, main page]

BR9713093A - Processes for reducing interference in a channel in a mobile communication system, for signal processing in a mobile communication system, for measuring signal quality in a mobile communication system, and for reducing interference in a system base station analogue mobile communications that do not use beam formation, interference reduction system for use on a mobile communications system base station, and mobile communications system base station. - Google Patents

Processes for reducing interference in a channel in a mobile communication system, for signal processing in a mobile communication system, for measuring signal quality in a mobile communication system, and for reducing interference in a system base station analogue mobile communications that do not use beam formation, interference reduction system for use on a mobile communications system base station, and mobile communications system base station.

Info

Publication number
BR9713093A
BR9713093A BR9713093-1A BR9713093A BR9713093A BR 9713093 A BR9713093 A BR 9713093A BR 9713093 A BR9713093 A BR 9713093A BR 9713093 A BR9713093 A BR 9713093A
Authority
BR
Brazil
Prior art keywords
mobile communication
communication system
base station
interference
mobile communications
Prior art date
Application number
BR9713093-1A
Other languages
Portuguese (pt)
Inventor
Otis L Frost
Victor Shtrom
Eugene B Hogenauer
Original Assignee
Argo Systems 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 Argo Systems Inc filed Critical Argo Systems Inc
Publication of BR9713093A publication Critical patent/BR9713093A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Transmission System (AREA)

Abstract

"PROCESSO DE REDUçãO DE INTERFERêNCIA EM UM CANAL EM UM SISTEMA DE COMUNICAçãO MóVEL, DE PROCESSAMENTO DE SINAL EM UM SISTEMA DE COMUNICAçãO MóVEL, DE MEDIçãO DA QUALIDADE DO SINAL EM UM SISTEMA DE COMUNICAçõES MóVEL, E DE REDUçãO DE INTERFERêNCIA EM UMA ESTAçãO BASE DE SISTEMA DE COMUNICAçõES MóVEL ANALóGICO QUE NãO UTILIZA A FORMAçãO DE FEIXE, SISTEMA DE REDUçãO DE INTERFERêNCIA PARA USO EM UMA ESTAçãO BASE DO SISTEMA DE COMUNICAçõES MóVEL, E, ESTAçãO BASE DO SISTEMA DE COMUNICAçõES MóVEL". Processo e circuito para redução de interferência em uma comunicação sem fio (840); redução de interferência de uma fonte recebida no mesmo canal como um sinal de interesse (142); formação de feixe adaptativa e varredura (154) de forma a direcionar um ponto nulo de sensibilidade (145) na direção de um sinal de interferência enquanto ainda se recebe o sinal de interesse; canais sem fio de varredura e aplicação da formação de feixe adaptativa aos canais possuindo interferência. Seleção entre os sinais com base em um tom de áudio de supervisão (826). Seleção de uma amostra possuindo uma duração menor do que um inverso de uma taxa de esmorecimento do sinal; determinação de um encaixe linear em uma amostra e transformação de um sinal com base na minimização da variação do encaixe linear."PROCESS OF REDUCING INTERFERENCE IN A CHANNEL IN A MOBILE COMMUNICATION SYSTEM, OF SIGNAL PROCESSING IN A MOBILE COMMUNICATION SYSTEM, OF SIGNAL QUALITY MEASUREMENT IN A MOBILE COMMUNICATION SYSTEM, AND OF REDUCING INTERFERENCE INTERFERENCE IN BASE ANALOG MOBILE COMMUNICATION SYSTEM THAT DOES NOT USE BEAM FORMATION, INTERFERENCE REDUCTION SYSTEM FOR USE IN A MOBILE COMMUNICATION SYSTEM BASE STATION, AND, MOBILE COMMUNICATION SYSTEM BASE STATION. Process and circuit for reducing interference in wireless communication (840); reducing interference from a source received on the same channel as a signal of interest (142); adaptive beam formation and scanning (154) in order to direct a null point of sensitivity (145) in the direction of an interference signal while still receiving the signal of interest; wireless scanning channels and application of adaptive beam formation to channels having interference. Selection between signals based on a supervisory audio tone (826). Selection of a sample having a duration less than an inverse rate of signal fading; determining a linear fit in a sample and transforming a signal based on minimizing the variation of the linear fit.

BR9713093-1A 1996-11-18 1997-11-18 Processes for reducing interference in a channel in a mobile communication system, for signal processing in a mobile communication system, for measuring signal quality in a mobile communication system, and for reducing interference in a system base station analogue mobile communications that do not use beam formation, interference reduction system for use on a mobile communications system base station, and mobile communications system base station. BR9713093A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3114096P 1996-11-18 1996-11-18
PCT/US1997/021025 WO1998023101A1 (en) 1996-11-18 1997-11-18 Adaptive beamforming for wireless communication

Publications (1)

Publication Number Publication Date
BR9713093A true BR9713093A (en) 2000-03-28

Family

ID=21857852

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9713093-1A BR9713093A (en) 1996-11-18 1997-11-18 Processes for reducing interference in a channel in a mobile communication system, for signal processing in a mobile communication system, for measuring signal quality in a mobile communication system, and for reducing interference in a system base station analogue mobile communications that do not use beam formation, interference reduction system for use on a mobile communications system base station, and mobile communications system base station.

Country Status (3)

Country Link
AU (1) AU5442998A (en)
BR (1) BR9713093A (en)
WO (1) WO1998023101A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1091447A1 (en) * 1999-10-07 2001-04-11 Siemens Aktiengesellschaft Antenna system, in particular for use in a mobile phone handset, and corresponding control method
JP3562420B2 (en) * 2000-02-10 2004-09-08 日本電気株式会社 Adaptive antenna device
GB2406755B (en) * 2003-10-04 2008-07-02 Motorola Inc Communication system, communication unit and method of sharing a communication resource

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634199A (en) * 1993-04-14 1997-05-27 Stanford University Method of subspace beamforming using adaptive transmitting antennas with feedback
GB2281007B (en) * 1993-08-12 1998-04-15 Northern Telecom Ltd Base station antenna arrangement
TW351886B (en) * 1993-09-27 1999-02-01 Ericsson Telefon Ab L M Using two classes of channels with different capacity

Also Published As

Publication number Publication date
WO1998023101A1 (en) 1998-05-28
AU5442998A (en) 1998-06-10

Similar Documents

Publication Publication Date Title
ATE264570T1 (en) AUTO-MECHANICAL GAIN CONTROL FOR TIME-SCHEDULE OPERATION
EP0763888A3 (en) Method and circuit arrangement for processing audio signal
FI971724A0 (en) Data transmission in a mobile network
KR950703234A (en) SIGNAL PROCESSING IN COMMUNICATION SYSTEMS
DE69938194D1 (en) An improved receiver comprising a broadband digitizer
FI962165A0 (en) Base station
MX9703119A (en) METHOD AND APPARATUS FOR CHANNEL CALCULATION.
FI982763A7 (en) Communication method and radio system
BR9814996A (en) Cellular telephone system, and, process for use in a cellular telephone system for assigning traffic channels
NO993895D0 (en) Method and apparatus for directional radio communication
FI20001211A7 (en) Method and apparatus for handover in a CDMA system using repeaters
AU7893598A (en) A cellular radio system and a method for measuring the interference level
BR9908568B1 (en) communications system, method of communicating a video signal and method of establishing a communications system.
CA2218951A1 (en) Optical signal power detection with signature bit pattern in wdm systems
EP1641149A3 (en) Optical signal quality supervisory device
EP0837616A3 (en) Mobile communication system
SE9904859L (en) Methods and devices in radio communication
SE9500170L (en) Load reduction system and method in a mobile communication system and a mobile communication system
WO2001030090A3 (en) Method and system for the wireless transmission of loss sensitive data
BR9713093A (en) Processes for reducing interference in a channel in a mobile communication system, for signal processing in a mobile communication system, for measuring signal quality in a mobile communication system, and for reducing interference in a system base station analogue mobile communications that do not use beam formation, interference reduction system for use on a mobile communications system base station, and mobile communications system base station.
NO20003539L (en) Method and apparatus for directional radio communication
CA2379478A1 (en) Communication terminal apparatus, base station apparatus, and radio communication method
DE69927127D1 (en) METHOD AND ARRANGEMENT FOR CHANNEL DISTRIBUTION IN A NETWORK WITH DUAL RIBBON
WO1997013378A3 (en) Apparatus and method for determining and using channel state information
AU6480294A (en) Transmission system for the transmit part of a terminal associated with a digital mobile radio installation

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A E 9A 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 8.6 PUBLICADO NA RPI 1905 DE 10/07/2007.

B15K Others concerning applications: alteration of classification

Ipc: H04B 7/08 (2006.01), H01Q 3/26 (2006.0