AR023387A1 - ACCESO ALEATORIO EN UN SISTEMA DE TELECOMUNICACIONES MoVILES - Google Patents

ACCESO ALEATORIO EN UN SISTEMA DE TELECOMUNICACIONES MoVILES

Info

Publication number
AR023387A1
AR023387A1 ARP000101555A ARP000101555A AR023387A1 AR 023387 A1 AR023387 A1 AR 023387A1 AR P000101555 A ARP000101555 A AR P000101555A AR P000101555 A ARP000101555 A AR P000101555A AR 023387 A1 AR023387 A1 AR 023387A1
Authority
AR
Argentina
Prior art keywords
preamble
random access
quadriphasic
resulting
produce
Prior art date
Application number
ARP000101555A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR023387A1 publication Critical patent/AR023387A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2078—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the phase change per symbol period is constrained
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

En una realizacion, se revelan un método y aparato de modulacion de preámbulo de Canal de Acceso Aleatorio (RACH), en el cual se filtran los componentesreales e imaginarios de un preámbulo RACH complejo, en los correspondientes filtros de formas dep ulsos. Por consiguiente, las transiciones de fase de la senalresultante se limitan a la totalidad de las posiciones de chips, y los codigos cuadrifásicos resultantes producen las senales transmitidas con Relaciones dePotencia de Pico a Promedio(PAPR ) inferiores a las que se producen usando los esquemas de Modulacion por Desplazamiento de Fase Híbrida (HPSK). Por otra parteel codigo de sincronizacion cuadrifásico resultante retiene la misma magnitud de autocorrelacion aperiodica que elcodigo bi nario original, optimizado paraproducir la mínima probabilidad de sincronizacion incorrecta.
ARP000101555A 1999-04-08 2000-04-05 ACCESO ALEATORIO EN UN SISTEMA DE TELECOMUNICACIONES MoVILES AR023387A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/288,747 US6549564B1 (en) 1999-04-08 1999-04-08 Random access in a mobile telecommunications system

Publications (1)

Publication Number Publication Date
AR023387A1 true AR023387A1 (es) 2002-09-04

Family

ID=23108477

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP000101555A AR023387A1 (es) 1999-04-08 2000-04-05 ACCESO ALEATORIO EN UN SISTEMA DE TELECOMUNICACIONES MoVILES

Country Status (15)

Country Link
US (1) US6549564B1 (es)
EP (1) EP1166456B1 (es)
JP (1) JP3575752B2 (es)
KR (1) KR20020004992A (es)
CN (1) CN1192507C (es)
AR (1) AR023387A1 (es)
AT (1) ATE405996T1 (es)
AU (1) AU774324B2 (es)
BR (1) BRPI0009649B1 (es)
CA (1) CA2366591C (es)
DE (1) DE60039974D1 (es)
ES (1) ES2311454T3 (es)
MY (1) MY126030A (es)
TW (1) TW462149B (es)
WO (1) WO2000062436A1 (es)

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US6674787B1 (en) * 1999-05-19 2004-01-06 Interdigital Technology Corporation Raising random access channel packet payload
DE19930229C1 (de) * 1999-06-30 2001-07-05 Infineon Technologies Ag Quadricorrelator für einen Demodulator für frequenzmodulierte Signale
US6874006B1 (en) * 1999-10-29 2005-03-29 Pentomics, Inc. Apparatus and method for rectangular-to-polar conversion
US7103027B2 (en) * 1999-12-14 2006-09-05 Interdigital Technology Corporation Random access channel preamble detection
WO2002103946A2 (en) * 2001-06-18 2002-12-27 Koninklijke Philips Electronics N.V. Peak detection with matched filter
KR20030013287A (ko) * 2001-08-01 2003-02-14 텍사스 인스트루먼츠 인코포레이티드 회전된 ｑｐｓｋ 시퀀스를 이용한 ｃｄｍａ 역확산을 위한수신기 및 수신방법
JP2003152600A (ja) 2001-11-15 2003-05-23 Nec Corp 固定パターン検出装置、固定パターン検出方法、無線基地局および無線移動局
US7006587B1 (en) * 2001-11-20 2006-02-28 Cisco Technolgy, Inc. Preamble aided synchronization
EP1449318A4 (en) 2001-11-29 2007-08-15 Interdigital Tech Corp SYSTEM AND METHOD FOR USE OF PRIMARY AND SECONDARY SYNCHRONIZATION CODES DURING THE CELL SEARCH
KR100429528B1 (ko) * 2002-01-23 2004-05-03 삼성전자주식회사 디지털 통신 방법 및 장치
TWI224740B (en) * 2002-07-31 2004-12-01 Interdigital Tech Corp Start-up automatic frequency control (AFC) method and apparatus
KR100452512B1 (ko) 2002-08-16 2004-10-13 엘지전자 주식회사 채널용량 개선 왈쉬코드 확산장치 및 그 운용방법
US20040127207A1 (en) * 2002-09-25 2004-07-01 Interdigital Technology Corporation Programmable radio interface
US8422434B2 (en) * 2003-02-18 2013-04-16 Qualcomm Incorporated Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems
US7302276B2 (en) * 2003-11-25 2007-11-27 Telefonaktiebolaget L M Ericsson (Publ) Method and system for determining uplink/downlink path-loss difference
US7808940B2 (en) * 2004-05-10 2010-10-05 Alcatel-Lucent Usa Inc. Peak-to-average power ratio control
US20050286547A1 (en) * 2004-06-24 2005-12-29 Baum Kevin L Method and apparatus for accessing a wireless multi-carrier communication system
JP4362090B2 (ja) * 2004-07-05 2009-11-11 パナソニック株式会社 変調器
US7623565B2 (en) * 2004-09-20 2009-11-24 Cypress Semiconductor Corporation Method for providing packet framing in a communication system
US20060126767A1 (en) * 2004-12-09 2006-06-15 Kiomars Anvari Simple filter to remove imperfection
KR100702456B1 (ko) * 2004-12-10 2007-04-03 한국전자통신연구원 심벌 동기 검출 방법 및 그 장치
GB2445336B (en) 2005-11-04 2010-12-08 Nec Corp Wireless communication system and method of controlling a transmission power
WO2007082407A1 (fr) * 2006-01-18 2007-07-26 Zte Corporation Procédé d'accès aléatoire pour équipement utilisateur dans un système de communication à accès multiple par répartition en code de synchronisation et dans le temps
KR20070095583A (ko) * 2006-03-21 2007-10-01 삼성전자주식회사 이동통신 시스템에서 메시지 전송 장치 및 방법
CA2667096C (en) * 2006-11-06 2013-09-24 Qualcomm Incorporated Methods and apparatus for power allocation and/or rate selection for ul mimo/simo operations with par considerations
WO2008114967A1 (en) 2007-03-16 2008-09-25 Lg Electronics Inc. Method of generating random access preambles in wireless communication system
KR20080084536A (ko) 2007-03-16 2008-09-19 엘지전자 주식회사 무선통신 시스템에서 제어정보 전송 방법
JP5114502B2 (ja) * 2007-03-16 2013-01-09 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおいてランダムアクセスプリアンブル生成方法
WO2009092150A1 (en) * 2008-01-25 2009-07-30 Nautel Limited Peak-to-average power reduction method
KR100933205B1 (ko) 2008-05-09 2009-12-22 (주) 콘텔라 Ｗｃｄｍａ 물리 랜덤 액세스 채널 복조장치 및 복조방법
JP5350068B2 (ja) * 2009-04-30 2013-11-27 日本電波工業株式会社 相関ピーク検出方法及び無線機
KR101329059B1 (ko) 2009-11-12 2013-11-14 한국전자통신연구원 무선 센서 네트워크에서 패킷 데이터의 전송 장치 및 방법
US8798196B2 (en) 2011-01-25 2014-08-05 Ibiquity Digital Corporation Peak-to-average power ratio reduction for hybrid FM HD radio transmission
US9160579B1 (en) * 2014-03-26 2015-10-13 Nokia Solutions And Networks Oy Low PAPR modulation for coverage enhancement
DK3266119T3 (en) 2015-03-06 2018-08-13 Ericsson Telefon Ab L M Beam forming using an antenna device
WO2017190777A1 (en) 2016-05-04 2017-11-09 Telefonaktiebolaget Lm Ericsson (Publ) Beam forming using an antenna arrangement

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US6310869B1 (en) * 1998-08-31 2001-10-30 Qualcomm Incorporated Method and apparatus for reducing amplitude variations and interference in communication signals, such as in wireless communication signals employing inserted pilot symbols
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Also Published As

Publication number Publication date
DE60039974D1 (de) 2008-10-02
EP1166456A1 (en) 2002-01-02
AU4161400A (en) 2000-11-14
US6549564B1 (en) 2003-04-15
CN1364348A (zh) 2002-08-14
CA2366591A1 (en) 2000-10-19
EP1166456B1 (en) 2008-08-20
BR0009649A (pt) 2002-02-05
BRPI0009649B1 (pt) 2015-07-21
CA2366591C (en) 2009-12-15
ES2311454T3 (es) 2009-02-16
AU774324B2 (en) 2004-06-24
KR20020004992A (ko) 2002-01-16
TW462149B (en) 2001-11-01
JP3575752B2 (ja) 2004-10-13
JP2002542650A (ja) 2002-12-10
ATE405996T1 (de) 2008-09-15
CN1192507C (zh) 2005-03-09
WO2000062436A1 (en) 2000-10-19
MY126030A (en) 2006-09-29

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