BR9904127A - Sistema de comunicação de tdma e método incluindo modulação descontìnua para reduzir interferência de canais adjacentes e de co-canal - Google Patents

Sistema de comunicação de tdma e método incluindo modulação descontìnua para reduzir interferência de canais adjacentes e de co-canal

Info

Publication number
BR9904127A
BR9904127A BR9904127-8A BR9904127A BR9904127A BR 9904127 A BR9904127 A BR 9904127A BR 9904127 A BR9904127 A BR 9904127A BR 9904127 A BR9904127 A BR 9904127A
Authority
BR
Brazil
Prior art keywords
adjacent
time slices
carrier frequency
channel channels
frequency signals
Prior art date
Application number
BR9904127-8A
Other languages
English (en)
Inventor
Alex Matusevich
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9904127A publication Critical patent/BR9904127A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

<B>SISTEMA DE COMUNICAçãO DE TDMA E MéTODO INCLUINDO MODULAçãO DESCONTìNUA PARA REDUZIR INTERFERêNCIA DE CANAIS ADJACENTES E DE CO-CANAL<D> Em um sistema de comunicação de acesso múltiplo por divisão de tempo, interferência de canais adjacentes e de co-canal é reduzida por descontinuação ou desligamento da modulação dos sinais de freq³ência de portadora durante fatias de tempo inativas, de modo que seja reduzida a potência transmitida dos sinais de freq³ência de portadora. Além disso, as fatias de tempo e os sinais de freq³ência de portadora são organizados de modo que cada sinal de freq³ência de portadora tenha a menor quantidade de fatias de tempo designadas como fatias de tempo ativas. As fatias de tempo são designadas de modo que as mesmas fatias de tempo respectivas de sinais de freq³ência de portadora adjacentes não sejam designadas simultaneamente como fatias de tempo ativas.
BR9904127-8A 1998-09-18 1999-09-10 Sistema de comunicação de tdma e método incluindo modulação descontìnua para reduzir interferência de canais adjacentes e de co-canal BR9904127A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/156,761 US7082113B1 (en) 1998-09-18 1998-09-18 TDMA communication system and method including discontinuous modulation for reducing adjacent and co-channel interference

Publications (1)

Publication Number Publication Date
BR9904127A true BR9904127A (pt) 2000-08-29

Family

ID=22560976

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9904127-8A BR9904127A (pt) 1998-09-18 1999-09-10 Sistema de comunicação de tdma e método incluindo modulação descontìnua para reduzir interferência de canais adjacentes e de co-canal

Country Status (9)

Country Link
US (1) US7082113B1 (pt)
EP (1) EP0987835B1 (pt)
JP (1) JP3402279B2 (pt)
KR (1) KR20000023175A (pt)
CN (1) CN1249573A (pt)
AU (1) AU4877599A (pt)
BR (1) BR9904127A (pt)
CA (1) CA2279122A1 (pt)
DE (1) DE69935383T2 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6940845B2 (en) * 2000-03-23 2005-09-06 At & T, Corp. Asymmetric measurement-based dynamic packet assignment system and method for wireless data services
US7274725B2 (en) * 2000-12-28 2007-09-25 Siemens Communications, Inc. System and method for adaptive carrier occupancy in a frequency hopping spread spectrum system
US7006483B2 (en) * 2001-02-23 2006-02-28 Ipr Licensing, Inc. Qualifying available reverse link coding rates from access channel power setting
US7075906B2 (en) * 2003-09-30 2006-07-11 Cisco Technology, Inc. Method and apparatus for cell identification in wireless data networks
US7161988B2 (en) 2004-04-12 2007-01-09 The Directv Group, Inc. Method and apparatus for minimizing co-channel interference
US7672285B2 (en) * 2004-06-28 2010-03-02 Dtvg Licensing, Inc. Method and apparatus for minimizing co-channel interference by scrambling
US8213553B2 (en) * 2004-04-12 2012-07-03 The Directv Group, Inc. Method and apparatus for identifying co-channel interference
US7412209B2 (en) * 2004-04-12 2008-08-12 The Directv Group, Inc. Shifted channel characteristics for mitigating co-channel interference
JP4497534B2 (ja) * 2004-09-21 2010-07-07 株式会社ケンウッド 無線通信装置及び無線通信方法
JP4687047B2 (ja) * 2004-09-21 2011-05-25 株式会社ケンウッド 無線通信制御装置及び無線通信方法
JP5080470B2 (ja) * 2005-08-26 2012-11-21 ザ・ディレクティービー・グループ・インコーポレイテッド 信号送信のためのスクランブリングコードを決定する方法と装置
US7848221B2 (en) * 2008-07-14 2010-12-07 Motorola Mobility, Inc. Method and system for detecting adjacent channel interference from OFDM/OFDMA based broadband wireless access
US20110002284A1 (en) * 2009-07-06 2011-01-06 Shilpa Talwar Multi-tier network interference mitigation
EP2564618B1 (en) * 2010-04-26 2016-06-08 Telefonaktiebolaget LM Ericsson (publ) Gradual output power density reduction for a frequency carrier
KR101641827B1 (ko) * 2015-04-10 2016-07-21 한국과학기술원 무선 통신 시스템에서 동일 채널 간섭 및 인접 채널 간섭을 고려한 동적 주파수 스펙트럼 할당 방법

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343513A (en) * 1992-04-20 1994-08-30 Hughes Aircraft Company Channel compression and dynamic repartitioning for dual mode cellular radio
EP0632609A3 (en) * 1993-06-30 1995-12-27 At & T Corp Method and apparatus for preventing electromagnetic interference.
US5535207A (en) * 1994-05-20 1996-07-09 Motorola, Inc. Method of dynamically allocating time slots on a packet data communications channel
JP2682444B2 (ja) * 1994-05-31 1997-11-26 日本電気株式会社 デジタル移動体通信交換システムと移動体通信交換機側データ通信アダプタ
US5574718A (en) * 1994-07-01 1996-11-12 Dsc Communications Corporation Signal protection and monitoring system
DE69623673T2 (de) * 1995-03-08 2003-08-07 Ntt Mobile Communications Network Inc., Tokio/Tokyo Mobile Kommunikationsanordnung mit Zeitverschiebung vor Datenübertragung
US5867490A (en) * 1996-11-05 1999-02-02 Worldspace International Network, Inc. Direct radio broadcast receiver for providing frame synchronization and correlation for time division multiplexed transmissions
US5737695A (en) * 1996-12-21 1998-04-07 Telefonaktiebolaget Lm Ericsson Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone
JPH10257005A (ja) 1997-03-12 1998-09-25 Sony Corp 通信方法及び送信装置並びに受信装置

Also Published As

Publication number Publication date
EP0987835A2 (en) 2000-03-22
US7082113B1 (en) 2006-07-25
DE69935383D1 (de) 2007-04-19
DE69935383T2 (de) 2007-11-29
JP3402279B2 (ja) 2003-05-06
CA2279122A1 (en) 2000-03-18
EP0987835A3 (en) 2000-11-15
KR20000023175A (ko) 2000-04-25
EP0987835B1 (en) 2007-03-07
CN1249573A (zh) 2000-04-05
AU4877599A (en) 2000-03-23
JP2000101540A (ja) 2000-04-07

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired
B15K Others concerning applications: alteration of classification

Ipc: H04B 7/26 (2006.01)