IT1259032B - Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo - Google Patents

Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo

Info

Publication number
IT1259032B
IT1259032B ITMI921271A ITMI921271A IT1259032B IT 1259032 B IT1259032 B IT 1259032B IT MI921271 A ITMI921271 A IT MI921271A IT MI921271 A ITMI921271 A IT MI921271A IT 1259032 B IT1259032 B IT 1259032B
Authority
IT
Italy
Prior art keywords
angle
transmission system
optimizing
processing
radio transmission
Prior art date
Application number
ITMI921271A
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 ITMI921271A priority Critical patent/IT1259032B/it
Publication of ITMI921271A0 publication Critical patent/ITMI921271A0/it
Priority to DE69331567T priority patent/DE69331567T2/de
Priority to ES93108065T priority patent/ES2170059T3/es
Priority to EP93108065A priority patent/EP0572858B1/en
Priority to NO931847A priority patent/NO304917B1/no
Priority to JP5145735A priority patent/JPH06181450A/ja
Publication of ITMI921271A1 publication Critical patent/ITMI921271A1/it
Priority to US08/304,624 priority patent/US5581583A/en
Application granted granted Critical
Publication of IT1259032B publication Critical patent/IT1259032B/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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

Metodo per processare ed ottimizzare la funzione BER analogica in un sistema di trasmissione digitale in diversità di spazio e/o angolo in cui si ottimizza il collegamento radio ricercando un minimo della funzione BER analogica BERn (O); analizzando detto minimo individuando se è un minimo relativo dannoso ai fini del collegamento fino ad arrivare al minimo assoluto che realizza con sicurezza le migliori condizioni per il collegamento stesso.
ITMI921271A 1992-05-25 1992-05-25 Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo IT1259032B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI921271A IT1259032B (it) 1992-05-25 1992-05-25 Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo
DE69331567T DE69331567T2 (de) 1992-05-25 1993-05-18 Verfahren zur Minimierung der ZF-geschätzten Bitfehlerratefunktion in einem digitalen Raum/Winkeldiversity-Funkempfänger
ES93108065T ES2170059T3 (es) 1992-05-25 1993-05-18 Metodo para minimizar la funcion de velocidad de error de bit estimada en if, en un receptor de radio digital con diversificacion espacial/angular.
EP93108065A EP0572858B1 (en) 1992-05-25 1993-05-18 Method for minimizing the IF-estimated bit error rate function in a space/angle diversity digital radio receiver
NO931847A NO304917B1 (no) 1992-05-25 1993-05-21 FremgangsmÕte for Õ optimalisere den analoge BER-funksjon i en digital radiomottaker med rom/vinkeldiversitet
JP5145735A JPH06181450A (ja) 1992-05-25 1993-05-25 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におけるアナログｂｅｒ関数を処理し、最適化する方法
US08/304,624 US5581583A (en) 1992-05-25 1994-09-12 Optimizing the analog BER function in a spatial angular diversity digital radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI921271A IT1259032B (it) 1992-05-25 1992-05-25 Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo

Publications (3)

Publication Number Publication Date
ITMI921271A0 ITMI921271A0 (it) 1992-05-25
ITMI921271A1 ITMI921271A1 (it) 1993-11-25
IT1259032B true IT1259032B (it) 1996-03-11

Family

ID=11363376

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI921271A IT1259032B (it) 1992-05-25 1992-05-25 Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo

Country Status (7)

Country Link
US (1) US5581583A (it)
EP (1) EP0572858B1 (it)
JP (1) JPH06181450A (it)
DE (1) DE69331567T2 (it)
ES (1) ES2170059T3 (it)
IT (1) IT1259032B (it)
NO (1) NO304917B1 (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252898B1 (en) * 1995-07-19 2001-06-26 Hitachi Denshi Kabushiki Kaisha Spread spectrum communication method and system wherein data rate of data to be transmitted is changed in accordance with transmission quality
US6314127B1 (en) * 1999-02-23 2001-11-06 Lucent Technologies Inc. System and method for enhancing signal reception
IT1318274B1 (it) * 2000-07-28 2003-07-28 Siemens Inf & Comm Networks Procedimento per automatizzare l'equalizzazione preliminare deisegnali combinati nei radioricevitori in diversita' di spazio.
US6504517B1 (en) * 2000-09-12 2003-01-07 Lucent Technologies Inc. Variable sectorization tower top applique for base stations
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8169889B2 (en) 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US20050180312A1 (en) * 2004-02-18 2005-08-18 Walton J. R. Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US8285226B2 (en) * 2004-05-07 2012-10-09 Qualcomm Incorporated Steering diversity for an OFDM-based multi-antenna communication system
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7110463B2 (en) * 2004-06-30 2006-09-19 Qualcomm, Incorporated Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system
US7978649B2 (en) * 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US7978778B2 (en) 2004-09-03 2011-07-12 Qualcomm, Incorporated Receiver structures for spatial spreading with space-time or space-frequency transmit diversity
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US8290089B2 (en) 2006-05-22 2012-10-16 Qualcomm Incorporated Derivation and feedback of transmit steering matrix
WO2010066289A1 (en) * 2008-12-09 2010-06-17 Telefonaktiebolaget L M Ericsson (Publ) Symbol-timing recovery techniques for multi-branch receivers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR333167A (fr) * 1903-06-18 1903-11-17 Edward Hasselbach Jeu de billard
US3864633A (en) * 1972-08-23 1975-02-04 Sperry Rand Corp Angle diversity communication system
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
US4261056A (en) * 1979-07-16 1981-04-07 Bell Telephone Laboratories, Incorporated Equalizing signal combiner
US4373207A (en) * 1980-12-17 1983-02-08 Bell Telephone Laboratories, Incorporated Space diversity signal combiner
US4512034A (en) * 1983-07-11 1985-04-16 At&T Bell Laboratories Technique for digital radio space diversity combining
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
US5157672A (en) * 1989-03-15 1992-10-20 Nec Corporation Interference detection apparatus for use in digital mobile communications system
US4998264A (en) * 1989-09-20 1991-03-05 Data Broadcasting Corporation Method and apparatus for recovering data, such as teletext data encoded into television signals
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
DE69331567D1 (de) 2002-03-21
US5581583A (en) 1996-12-03
NO304917B1 (no) 1999-03-01
ES2170059T3 (es) 2002-08-01
ITMI921271A1 (it) 1993-11-25
EP0572858A1 (en) 1993-12-08
DE69331567T2 (de) 2002-10-10
JPH06181450A (ja) 1994-06-28
NO931847D0 (no) 1993-05-21
NO931847L (no) 1993-11-26
EP0572858B1 (en) 2002-02-13
ITMI921271A0 (it) 1992-05-25

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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