Internet senza fili cambia il mondo delle Telecomunicazioni Breve panoramica dalle ORIGINI al FUTURO (fare click per procedere)

Presentazione sul tema: "Internet senza fili cambia il mondo delle Telecomunicazioni Breve panoramica dalle ORIGINI al FUTURO (fare click per procedere)"— Transcript della presentazione:

1 Internet senza fili cambia il mondo delle Telecomunicazioni Breve panoramica dalle ORIGINI al FUTURO (fare click per procedere)

2 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

3 Le tappe dellevoluzione 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)

4 La telefonia : commutazione manuale

5 … 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. Marconi a bordo dell Elettra http://www.geocities.com/CapeCanaveral/Hall/2875/GAMT/marconi.htm

6 … col campionamento la voce diventa digitale Nyquist-Shannon sampling theorem From 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 theorem From 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

7 Dalle valvole …. ai transistor e Chips integrati

8 … verso lalta densità di integrazione

9 Dal rame … alla fibra

10 Radio dal cielo ….. GALILEO: Un nuovo impiego estensivo dei satelliti

11 Short Range WPAN / BAN IEEE 802.15x IrDA RFID Sensors Bluetooth WLAN IEEE 802.11x HiperLAN2 Proprietary solutions LAN Ethernet HomePNA IEEE 1394 HomePlug EIB Home Plug and Play Powerline TransportTransport Narrow/ Broadband Wireless Access Fixed BWA LMDS HIPERACCESS MVDS IEEE 802.16-2004 Cellular Mobile GSM EDGE UMTS CDMA2000 PDC IEEE 802.20 IEEE 802.16e CDMAOne GPRS Quasi Cellular MBS 40 MBS 60 DECT WiredAccessWiredAccess xDSL ADSL VDSL HDSL SDSL ADSL2 Optical Solutions EPON GiBE PLCPLC Broadcasting DAB DVB-T Satellite S-UMTS DVB-S Broadband Satellite Other Wireless Access User Centric ICT Vision

12 WiMAX applications targeting 802.16d/e applications 802.16e Full Nomadism IP Services for SMALL BUSINESS E1/T1 Leased-Lines ENTERPRISE BACKHAUL for HOTSPOTS 802.16REVd RESIDENTIAL & SoHo Wireless DSL WiFi

13 GSM GPRS UMTS 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

14 WiMax - Tecnologia Urbana e Territoriale