JP4104023B2 - 受信無線信号の品質を改善するシステム - Google Patents

受信無線信号の品質を改善するシステム Download PDF

Info

Publication number
JP4104023B2
JP4104023B2 JP52779698A JP52779698A JP4104023B2 JP 4104023 B2 JP4104023 B2 JP 4104023B2 JP 52779698 A JP52779698 A JP 52779698A JP 52779698 A JP52779698 A JP 52779698A JP 4104023 B2 JP4104023 B2 JP 4104023B2
Authority
JP
Japan
Prior art keywords
signal
frequency
transmitting
carrier frequency
received
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
JP52779698A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001524277A5 (https=
JP2001524277A (ja
Inventor
チェンナケシュ，サンディープ
ボトムリイ，グレゴリイ，イー．
デント，ポール，ダブリュ．
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
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 JP2001524277A publication Critical patent/JP2001524277A/ja
Publication of JP2001524277A5 publication Critical patent/JP2001524277A5/ja
Application granted granted Critical
Publication of JP4104023B2 publication Critical patent/JP4104023B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H04B7/0891—Space-time diversity
    • H04B7/0894—Space-time diversity using different delays between antennas
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • 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
    • H04B7/084—Equal gain combining, only phase adjustments
    • 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
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
JP52779698A 1996-12-17 1997-12-15 受信無線信号の品質を改善するシステム Expired - Lifetime JP4104023B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/768,319 US6034987A (en) 1996-12-17 1996-12-17 System for improving the quality of a received radio signal
US08/768,319 1996-12-17
PCT/US1997/022605 WO1998027663A2 (en) 1996-12-17 1997-12-15 System for improving the quality of a received radio signal

Publications (3)

Publication Number Publication Date
JP2001524277A JP2001524277A (ja) 2001-11-27
JP2001524277A5 JP2001524277A5 (https=) 2005-02-10
JP4104023B2 true JP4104023B2 (ja) 2008-06-18

Family

ID=25082158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52779698A Expired - Lifetime JP4104023B2 (ja) 1996-12-17 1997-12-15 受信無線信号の品質を改善するシステム

Country Status (10)

Country Link
US (2) US6034987A (https=)
EP (1) EP0947058B1 (https=)
JP (1) JP4104023B2 (https=)
CN (2) CN101056134A (https=)
AU (1) AU5521098A (https=)
BR (1) BR9713943A (https=)
CA (1) CA2275283C (https=)
DE (1) DE69721048T2 (https=)
TW (1) TW362311B (https=)
WO (1) WO1998027663A2 (https=)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6006075A (en) * 1996-06-18 1999-12-21 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for transmitting communication signals using transmission space diversity and frequency diversity
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
US6185258B1 (en) * 1997-09-16 2001-02-06 At&T Wireless Services Inc. Transmitter diversity technique for wireless communications
CA2276207C (en) 1997-10-31 2003-02-18 At&T Wireless Services, Inc. Low complexity maximum likelihood detection of concatenated space codes for wireless applications
US6188736B1 (en) 1997-12-23 2001-02-13 At&T Wireless Svcs. Inc. Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
SE522587C2 (sv) * 1998-02-16 2004-02-24 Ericsson Telefon Ab L M Förfarande och mottagaranordning för mottagning av upprepade skurar i ett radiokommunikationssystem
US6459740B1 (en) * 1998-09-17 2002-10-01 At&T Wireless Services, Inc. Maximum ratio transmission
DE69940111D1 (de) * 1999-02-16 2009-01-29 Mitsubishi Electric Corp Funkübertragungssystem, sender und empfänger
US6377609B1 (en) * 1999-03-05 2002-04-23 Neptune Technology Group Inc. Spread spectrum frequency hopping system and method
DE19931236C2 (de) * 1999-07-07 2002-05-29 Siemens Ag Verfahren zur Zuweisung von Übertragungskapazität zu Verbindungen in einem Funk-Kommunikationssystem
US6693971B1 (en) * 2000-02-29 2004-02-17 Bae Systems Information And Electronic Systems Integration Inc. Wideband co-site interference reduction apparatus
JP3331595B2 (ja) * 2000-06-05 2002-10-07 日東紡績株式会社 室内環境設計システム、室内環境評価システム、室内環境設計方法及び室内環境評価方法
WO2002007341A2 (en) * 2000-07-14 2002-01-24 Ip.Access Ltd. Cellular radio telecommunication system
US6694147B1 (en) * 2000-09-15 2004-02-17 Flarion Technologies, Inc. Methods and apparatus for transmitting information between a basestation and multiple mobile stations
US7031371B1 (en) * 2000-09-25 2006-04-18 Lakkis Ismail A CDMA/TDMA communication method and apparatus for wireless communication using cyclic spreading codes
US7339955B2 (en) * 2000-09-25 2008-03-04 Pulse-Link, Inc. TDMA communication method and apparatus using cyclic spreading codes
US6983243B1 (en) * 2000-10-27 2006-01-03 Lucent Technologies Inc. Methods and apparatus for wireless transmission using multiple description coding
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US7450637B2 (en) * 2001-12-06 2008-11-11 Pulse-Link, Inc. Ultra-wideband communication apparatus and methods
US8045935B2 (en) 2001-12-06 2011-10-25 Pulse-Link, Inc. High data rate transmitter and receiver
US7349439B2 (en) * 2001-12-06 2008-03-25 Pulse-Link, Inc. Ultra-wideband communication systems and methods
US7483483B2 (en) * 2001-12-06 2009-01-27 Pulse-Link, Inc. Ultra-wideband communication apparatus and methods
US7317756B2 (en) * 2001-12-06 2008-01-08 Pulse-Link, Inc. Ultra-wideband communication apparatus and methods
US7289494B2 (en) * 2001-12-06 2007-10-30 Pulse-Link, Inc. Systems and methods for wireless communication over a wide bandwidth channel using a plurality of sub-channels
US20050152483A1 (en) * 2001-12-06 2005-07-14 Ismail Lakkis Systems and methods for implementing path diversity in a wireless communication network
US20050201473A1 (en) * 2001-12-06 2005-09-15 Ismail Lakkis Systems and methods for receiving data in a wireless communication network
US7257156B2 (en) * 2001-12-06 2007-08-14 Pulse˜Link, Inc. Systems and methods for equalization of received signals in a wireless communication network
US7403576B2 (en) 2001-12-06 2008-07-22 Pulse-Link, Inc. Systems and methods for receiving data in a wireless communication network
US20050058180A1 (en) * 2001-12-06 2005-03-17 Ismail Lakkis Ultra-wideband communication apparatus and methods
US20050053121A1 (en) * 2001-12-06 2005-03-10 Ismail Lakkis Ultra-wideband communication apparatus and methods
US7391815B2 (en) 2001-12-06 2008-06-24 Pulse-Link, Inc. Systems and methods to recover bandwidth in a communication system
US7406647B2 (en) 2001-12-06 2008-07-29 Pulse-Link, Inc. Systems and methods for forward error correction in a wireless communication network
JP2004048126A (ja) * 2002-07-09 2004-02-12 Hitachi Ltd 無線通信制限装置および無線通信中継局および無線通信基地局
US7336694B2 (en) * 2003-10-10 2008-02-26 Sbc Knowledge Ventures, L.P. Delay-induced scattering with phase randomization and partitioned frequency hopping
GB2408898B (en) * 2003-12-02 2006-08-16 Toshiba Res Europ Ltd Improved communications apparatus and methods
US7327249B1 (en) 2004-06-24 2008-02-05 Wayne-Dalton Corp. Barrier operator system having multiple frequency receivers
US7573851B2 (en) 2004-12-07 2009-08-11 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
US7640040B2 (en) * 2005-08-22 2009-12-29 Kyocera Corporation Systems and methods for tuning an antenna configuration in a mobile communication device
CN101253705A (zh) * 2005-09-01 2008-08-27 夏普株式会社 无线发送机及无线发送方法
US20100130221A1 (en) * 2005-10-31 2010-05-27 Kimihiko Imamura Terminal apparatus, base station apparatus, and communication system
US8483304B2 (en) * 2005-10-31 2013-07-09 Sharp Kabushiki Kaisha Radio transmitter, radio communication system, and radio transmission method
ES2382933T3 (es) * 2005-12-20 2012-06-14 Sharp Kabushiki Kaisha Método de control de transmisión, estación base, unidad móvil y sistema de comunicación con diversidad de retardo
CN103354465A (zh) * 2005-12-26 2013-10-16 夏普株式会社 无线发射机及无线发射方法
US7508188B2 (en) * 2006-05-31 2009-03-24 Broadcom Corporation On-chip current sensing methods and systems
US8363746B2 (en) * 2008-01-25 2013-01-29 Telefonaktiebolaget Lm Ericsson (Publ) Method to modify the frequency hopping scheme by extending the validity of the reference signals
US8077597B1 (en) 2008-03-06 2011-12-13 Rockwell Collins, Inc. Multi-dwell channel monitoring for coordinated frequency hopped systems
US8243100B2 (en) * 2008-06-26 2012-08-14 Qualcomm Incorporated System and method to perform fast rotation operations
US8160513B2 (en) * 2008-08-01 2012-04-17 Qualcomm Incorporated Methods and apparatus for implementing phase rotation at baseband frequency for transmit diversity
CN107612597B (zh) 2011-02-18 2021-01-05 太阳专利托管公司 信号生成方法及信号生成装置
US8942299B2 (en) * 2012-02-27 2015-01-27 Qualcomm Incorporated Baseband beamforming
CN104579440B (zh) * 2014-11-24 2018-04-20 南京邮电大学 一种基于反向天线阵的方向调制信号的设计方法
CN110121657B (zh) * 2016-09-30 2024-04-09 弗劳恩霍夫应用研究促进协会 基于报文拆分的定位
CN107959533B (zh) * 2016-10-17 2020-11-06 华为技术有限公司 一种无线设备及射频通道校准方法
CN108965183B (zh) * 2018-08-01 2020-12-01 南京邮电大学 基于优化目标函数的无线通信方向调制方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189348B (en) * 1979-05-23 1988-04-20 Standard Telephones Cables Ltd Adaptive antenna arrays for frequency hopped systems
US5142534A (en) * 1990-10-17 1992-08-25 O'neill Communications, Inc. Wireless integrated voice-data communication system
WO1995010891A1 (en) * 1993-10-13 1995-04-20 Ntt Mobile Communications Network Inc. Receiver for spread spectrum communication
US5572552A (en) * 1994-01-27 1996-11-05 Ericsson Ge Mobile Communications Inc. Method and system for demodulation of downlink CDMA signals
US5614914A (en) * 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
JP2746190B2 (ja) * 1995-04-27 1998-04-28 住友電気工業株式会社 スペクトラム拡散通信装置
US5563610A (en) * 1995-06-08 1996-10-08 Metawave Communications Corporation Narrow beam antenna systems with angular diversity

Also Published As

Publication number Publication date
CA2275283A1 (en) 1998-06-25
CN1245600A (zh) 2000-02-23
CA2275283C (en) 2006-12-05
WO1998027663A3 (en) 1998-08-06
CN100359821C (zh) 2008-01-02
BR9713943A (pt) 2000-03-21
US5991331A (en) 1999-11-23
EP0947058A2 (en) 1999-10-06
AU5521098A (en) 1998-07-15
US6034987A (en) 2000-03-07
CN101056134A (zh) 2007-10-17
DE69721048D1 (de) 2003-05-22
WO1998027663A2 (en) 1998-06-25
EP0947058B1 (en) 2003-04-16
JP2001524277A (ja) 2001-11-27
DE69721048T2 (de) 2004-04-08
TW362311B (en) 1999-06-21

Similar Documents

Publication Publication Date Title
JP4104023B2 (ja) 受信無線信号の品質を改善するシステム
JP4746243B2 (ja) データ伝送方法およびデータ伝送システム
Andoh et al. Channel estimation filter using time-multiplexed pilot channel for coherent RAKE combining in DS-CDMA mobile radio
US5325394A (en) Method and apparatus for canceling spread-spectrum noise
US6996375B2 (en) Transmit diversity and separating multiple loopback signals
KR100221172B1 (ko) Cdma 무선 수신기에서의 가중 계수의 적응적 조정방법
US6782040B2 (en) Interference cancellation in a spread spectrum communication system
AU754056B2 (en) Pilot strength measurement and multipath delay searcher for CDMA receiver
EP0605955B1 (en) Method and apparatus for compensating multipath fading and simulcast interference in a radio signal
KR100323486B1 (ko) 가변비율디지탈데이타를전송하기위한방법및장치
JP3464002B2 (ja) スペクトラム拡散通信システムにおけるコヒーレント通信方法および装置
KR100719637B1 (ko) 이동 통신 시스템의 이동국과 이동국용 통신 다이버시티 방법
US6963532B1 (en) Communication system and method with orthogonal block encoding
JP2778498B2 (ja) スペクトラム拡散ダイバーシチ送受信機
US20020094019A1 (en) CDMA communication system using an antenna array
US5442661A (en) Path gain estimation in a receiver
JPH06303214A (ja) 複数個のアンテナを有する送信器で直接シーケンス拡散スペクトル信号を送信する方法
JPH09261203A (ja) Ｃｄｍａ無線受信機における重み付け係数の決定方法
JP2001506096A (ja) 移相符号化サブチャネル
JPH09505953A (ja) Ｃｄｍａセルラー無線システムにおいて拡散比を調整することにより信号の質を高める方法
WO2001047133A1 (en) Method of receiving spread spectrum signal, and receiver
US6704345B1 (en) Transmission/reception apparatus and transmission/reception method
JPH09261172A (ja) 移動通信装置
Levi et al. Simulation results for a CDMA interference cancellation technique in a Rayleigh fading channel
KR100675901B1 (ko) 주파수 도약 부호 분할 다중 접속 시스템의 수신 장치

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040526

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040526

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20060214

RD05 Notification of revocation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7425

Effective date: 20060627

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070626

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070830

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071030

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080109

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080226

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080321

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110404

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120404

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120404

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130404

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130404

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140404

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term