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Transcript of Internet senza fili cambia il mondo delle Telecomunicazioni Breve panoramica dalle ORIGINI al FUTURO...
Internet senza fili cambia il mondo delle
Telecomunicazioni
Breve panoramica dalle ORIGINI al FUTURO
(fare click per procedere)
La telefonia ebbe origine da un illustre Italiano
… riconosciuto tardivamente …
But it seems that history must be rewritten if justice is to be done to an immigrant from Florence, Italy: Antonio Meucci, who invented the telephone in 1849 and filed his first patent caveat (notice of intention to take out a patent) in 1871, setting into motion a series of mysterious events and injustices which would be incredible were they not so well documented. http://www.italianhistorical.org/MeucciStory.htm
… riconosciuto tardivamente …
But it seems that history must be rewritten if justice is to be done to an immigrant from Florence, Italy: Antonio Meucci, who invented the telephone in 1849 and filed his first patent caveat (notice of intention to take out a patent) in 1871, setting into motion a series of mysterious events and injustices which would be incredible were they not so well documented. http://www.italianhistorical.org/MeucciStory.htm
Inventore del telefono
1808 - 1889
Inventore del telefono
1808 - 1889
Le tappe dell’evoluzione
Brief History
1. Telegraph invented by Gauss and Weber in 1834, perfected by Morse in 1844, Marconi and Popov worked on wireless, and in 1901 trans Atlantic
wireless from Cornwall to Newfoundland.
2. 1860 Telephone developed by Reiss, 1876 Bell Telephone founded, 1878 first telephone exchange in New Haven, CT, 1915 transcontinental telephone TJ Watson to AG Bell, 1953 transatlantic telephone cable, 1960s mobile radio (cellular).
3. 1900s AM invented and popularized by De Forest; commercial radio station begins broadcasting in Pittsburgh 1920.
4. 1933 FM and angle modulation proposed by Armstrong (much opposition by De Forest), but success by 1949.
5. 1929 Zworykin develops TV camera (iconoscope); 1939 BBC broadcasts TV, color TV in US in 1954.
(da: http://www.media.mit.edu)
Brief History
1. Telegraph invented by Gauss and Weber in 1834, perfected by Morse in 1844, Marconi and Popov worked on wireless, and in 1901 trans Atlantic
wireless from Cornwall to Newfoundland.
2. 1860 Telephone developed by Reiss, 1876 Bell Telephone founded, 1878 first telephone exchange in New Haven, CT, 1915 transcontinental telephone TJ Watson to AG Bell, 1953 transatlantic telephone cable, 1960s mobile radio (cellular).
3. 1900s AM invented and popularized by De Forest; commercial radio station begins broadcasting in Pittsburgh 1920.
4. 1933 FM and angle modulation proposed by Armstrong (much opposition by De Forest), but success by 1949.
5. 1929 Zworykin develops TV camera (iconoscope); 1939 BBC broadcasts TV, color TV in US in 1954.
(da: http://www.media.mit.edu)
La telefonia : commutazione manuale
… Intanto Marconi inventava la radio
Guglielmo Marconi , (Bologna 1874 - Roma 1937) è stato l' inventore italiano del primo sistema pratico di segnalazione radio. Studiò a Bologna e a Firenze e fin da giovanissimo, intuendo la possibilità di utilizzare le onde elettromagnetiche per inviare segnali a distanza, si interessò di telegrafia senza fili. Verso il 1895, potete consultare anche 100 YEARS OF RADIO - HOME PAGE , dopo numerosi esperimenti realizzati nella villa paterna di Pontecchio, mise a punto un'apparecchiatura con cui riuscì a inviare segnali intelligibili a una distanza di circa 2400 m, usando un'antenna direzionale. Dopo aver brevettato il sistema telegrafico in Gran Bretagna (1896), fondò a Londra la Marconi's Wireless Telegraph and Signal Company, nella quale lavorarono diversi scienziati a un ulteriore perfezionamento dei progetti.
Guglielmo Marconi , (Bologna 1874 - Roma 1937) è stato l' inventore italiano del primo sistema pratico di segnalazione radio. Studiò a Bologna e a Firenze e fin da giovanissimo, intuendo la possibilità di utilizzare le onde elettromagnetiche per inviare segnali a distanza, si interessò di telegrafia senza fili. Verso il 1895, potete consultare anche 100 YEARS OF RADIO - HOME PAGE , dopo numerosi esperimenti realizzati nella villa paterna di Pontecchio, mise a punto un'apparecchiatura con cui riuscì a inviare segnali intelligibili a una distanza di circa 2400 m, usando un'antenna direzionale. Dopo aver brevettato il sistema telegrafico in Gran Bretagna (1896), fondò a Londra la Marconi's Wireless Telegraph and Signal Company, nella quale lavorarono diversi scienziati a un ulteriore perfezionamento dei progetti.
Marconi a bordo dell’ Elettra
Marconi a bordo dell’ Elettra
http://www.geocities.com/CapeCanaveral/Hall/2875/GAMT/marconi.htmhttp://www.geocities.com/CapeCanaveral/Hall/2875/GAMT/marconi.htm
… col campionamento la voce diventa digitale
Nyquist-Shannon
sampling theoremFrom Wikipedia, the free encyclopedia.
The Nyquist-Shannon sampling theorem is the fundamental theorem in the field of information theory, in particular telecommunications. It is also known as the Whittaker-Nyquist-Kotelnikov-Shannon sampling theorem or just simply the sampling theorem.
The theorem states that:
when sampling a signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the bandwidth of the input signal in order to be able to reconstruct the original perfectly from the sampled version.
(Nyquist - 1928 ; Kotelnikov – 1933; Whittaker – 1935; Gabor – 1946; Shannon – 1948)
Nyquist-Shannon
sampling theoremFrom Wikipedia, the free encyclopedia.
The Nyquist-Shannon sampling theorem is the fundamental theorem in the field of information theory, in particular telecommunications. It is also known as the Whittaker-Nyquist-Kotelnikov-Shannon sampling theorem or just simply the sampling theorem.
The theorem states that:
when sampling a signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the bandwidth of the input signal in order to be able to reconstruct the original perfectly from the sampled version.
(Nyquist - 1928 ; Kotelnikov – 1933; Whittaker – 1935; Gabor – 1946; Shannon – 1948)
Claude Elwood Shannon
1916 - 2001
Claude Elwood Shannon
1916 - 2001
Dalle valvole …. ai transistor e Chips integrati
… verso l’alta densità di integrazione
Dal rame … alla fibra
Radio dal cielo …..
GALILEO: Un nuovo impiego estensivo dei satellitiGALILEO: Un nuovo impiego estensivo dei satelliti
Short Short RangeRangeShort Short RangeRange
WPAN / BANWPAN / BAN
IEEE 802.15xIrDA
RFIDSensors Bluetooth
WLANWLAN
IEEE 802.11x HiperLAN2
Proprietarysolutions
LANLAN
Ethernet
HomePNAIEEE 1394
HomePlug
EIB
HomePlug and Play
Powerline
TransportTransportTransportTransport
Narrow/ Narrow/ BroadbanBroadband Wireless d Wireless
AccessAccess
Narrow/ Narrow/ BroadbanBroadband Wireless d Wireless
AccessAccess
Fixed Fixed BWABWA
LMDS
HIPERACCESS MVDS
IEEE 802.16-2004
Cellular Cellular MobileMobile
GSM
EDGEUMTS CDMA2000
PDC
IEEE 802.20IEEE 802.16e
CDMAOne
GPRS
Quasi Quasi CellularCellular
MBS 40MBS 60
DECT
Wired Wired AccessAccessWired Wired AccessAccess
xDSLxDSL
ADSL
VDSL HDSL
SDSL
ADSL2
Optical Optical SolutionsSolutions
EPON GiBE
PLCPLCPLCPLC
BroadcastinBroadcastingg
DABDVB-T
SatelliteSatellite
S-UMTSDVB-S
BroadbandSatellite
Other Other WirelesWireles
s s AccessAccess
Other Other WirelesWireles
s s AccessAccess
User Centric ICT Vision
WiMAX applicationstargeting 802.16d/e applications
802.16eFull
Nomadism
IP Services for SMALL BUSINESS
E1/T1 Leased-Lines ENTERPRISE
BACKHAUL for HOTSPOTS
802.16REVd RESIDENTIAL &
SoHo Wireless DSL
WiFi
GSMGPRSUMT
S
Universal telecom platform inside the car for communication between the car (voice, data) and the outside
Veicoli del Futuro: Piattaforma di Telecomunicazioni
Positionning
Technical Information from the car
Security services: emergency, police
Web
Automotive diagnostic center
Automotive customer center
Navigation with traffic and Point of interest
Public network
Other applications
Voice and data from
conductor or passenger