IT1259031B - Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali - Google Patents

Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali

Info

Publication number
IT1259031B
IT1259031B ITMI921270A ITMI921270A IT1259031B IT 1259031 B IT1259031 B IT 1259031B IT MI921270 A ITMI921270 A IT MI921270A IT MI921270 A ITMI921270 A IT MI921270A IT 1259031 B IT1259031 B IT 1259031B
Authority
IT
Italy
Prior art keywords
channels
optimize
transmission system
variing
corner
Prior art date
Application number
ITMI921270A
Other languages
English (en)
Original Assignee
Alcatel Italia
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 Alcatel Italia filed Critical Alcatel Italia
Priority to ITMI921270A priority Critical patent/IT1259031B/it
Publication of ITMI921270A0 publication Critical patent/ITMI921270A0/it
Priority to DE69328889T priority patent/DE69328889T2/de
Priority to ES93108067T priority patent/ES2147187T3/es
Priority to EP93108067A priority patent/EP0575746B1/en
Priority to US08/066,386 priority patent/US5481569A/en
Priority to NO931846A priority patent/NO304209B1/no
Priority to JP5145736A priority patent/JPH06169271A/ja
Publication of ITMI921270A1 publication Critical patent/ITMI921270A1/it
Application granted granted Critical
Publication of IT1259031B publication Critical patent/IT1259031B/it

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
    • H04B7/084—Equal gain combining, only phase adjustments
    • 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
    • H04B7/0851—Joint weighting using training sequences or error signal
    • 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
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Metodo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversità di spazio e/o angolo variando il livello di attenuazione tra due canali in cui: si ottimizza la funzione BERn (O,T) variando la fase (O) e successivamente tenendo fisso l'ottimo di fase così trovato, si sbilancia il livello di attenuazione dei due canali, così da ottimizzare lo spettro dati ricombinato.
ITMI921270A 1992-05-25 1992-05-25 Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali IT1259031B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI921270A IT1259031B (it) 1992-05-25 1992-05-25 Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali
DE69328889T DE69328889T2 (de) 1992-05-25 1993-05-18 Verfahren und Vorrichtung zur Minimierung der ZF-geschätzten Bitfehlerratefunktion in einem digitalen Raum/Winkeldiversity-Funkempfänger
ES93108067T ES2147187T3 (es) 1992-05-25 1993-05-18 Metodo y dispositivo para optimizar el radioenlace para un sistema de transmision digital que emplea diversidad espacial y/o angular mediante la variacion del nivel de atenuacion relativa entre los dos canales.
EP93108067A EP0575746B1 (en) 1992-05-25 1993-05-18 Method and device for optimizing the radio link for a digital radio transmission system in difference of space and/or angle by varying the relative attenuation level between the two channels
US08/066,386 US5481569A (en) 1992-05-25 1993-05-21 Optimizing the analog bit function in a diversity radio receiver by varying the relative attenuation level between two channels after optimizing the relative phase between the two channels
NO931846A NO304209B1 (no) 1992-05-25 1993-05-21 FremgangsmÕte for optimalisering av en radioforbindelse
JP5145736A JPH06169271A (ja) 1992-05-25 1993-05-25 ２つのチャンネル間の相対的な減衰レベルを変化することによる空間差および、または角度差におけるデジタル無線伝送システム用無線リンクの最適化方法および装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI921270A IT1259031B (it) 1992-05-25 1992-05-25 Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali

Publications (3)

Publication Number Publication Date
ITMI921270A0 ITMI921270A0 (it) 1992-05-25
ITMI921270A1 ITMI921270A1 (it) 1993-11-25
IT1259031B true IT1259031B (it) 1996-03-11

Family

ID=11363375

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI921270A IT1259031B (it) 1992-05-25 1992-05-25 Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali

Country Status (7)

Country Link
US (1) US5481569A (it)
EP (1) EP0575746B1 (it)
JP (1) JPH06169271A (it)
DE (1) DE69328889T2 (it)
ES (1) ES2147187T3 (it)
IT (1) IT1259031B (it)
NO (1) NO304209B1 (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3388938B2 (ja) * 1995-04-26 2003-03-24 富士通株式会社 ダイバーシチ受信機
FI106669B (fi) * 1997-08-20 2001-03-15 Nokia Networks Oy Lähetysmenetelmä ja radiojärjestelmä
GB2332124B (en) * 1997-12-05 2002-07-17 British Broadcasting Corp Digital radio communication system
US6382331B1 (en) * 2000-04-17 2002-05-07 Noble Drilling Services, Inc. Method of and system for optimizing rate of penetration based upon control variable correlation
DE10026538A1 (de) * 2000-05-27 2001-11-29 Deutsche Telekom Ag Verfahren und Diversity-Empfangsvorrichtung zum Empfangen eines Mehrträger-Signals
JP5657513B2 (ja) * 2011-12-26 2015-01-21 日本電信電話株式会社 無線通信システム
JP5657514B2 (ja) * 2011-12-26 2015-01-21 日本電信電話株式会社 無線通信システム
US10700797B2 (en) 2017-07-07 2020-06-30 Nxp B.V. Signal processing using multiple sources

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129044A (en) * 1981-02-03 1982-08-10 Fujitsu Ltd Space diversity receiving system
JPS57147350A (en) * 1981-03-06 1982-09-11 Fujitsu Ltd Space diversity reception system
FR2628914B1 (fr) * 1988-03-18 1990-06-29 Alcatel Thomson Faisceaux Recepteur pour systeme de transmission par voie hertzienne a diversite d'espace, comprenant un combineur de diversite
NZ239733A (en) * 1990-09-21 1994-04-27 Ericsson Ge Mobile Communicat Mobile telephone diversity reception with predetect signal combination

Also Published As

Publication number Publication date
EP0575746B1 (en) 2000-06-21
US5481569A (en) 1996-01-02
JPH06169271A (ja) 1994-06-14
NO304209B1 (no) 1998-11-09
ITMI921270A1 (it) 1993-11-25
EP0575746A1 (en) 1993-12-29
NO931846L (no) 1993-11-26
DE69328889T2 (de) 2001-01-11
ITMI921270A0 (it) 1992-05-25
ES2147187T3 (es) 2000-09-01
DE69328889D1 (de) 2000-07-27
NO931846D0 (no) 1993-05-21

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990430