Comunicacin y Radios Digitales

1
Comunicación y Radios Digitales

• HR1RCT
• Juan Carlos Mercado Presidente
• 26 de Mayo de 2004
• Carlos Mauricio Alvarado
• Carlosalvarado_at_quick-photo.com
• Richard Pache HR1/K2LCT
• K2lct_at_aol.com

2
Modos de Radio HAMS

• CW-HF and VHF, 5 - 50 WPM
• PSK31- HF, variable length code
• RTTY- HF, Badout code
• PACTOR-HF, Error correction Digital Data
• PACKET-HF and VHF, FSK AX.25
• SSTV-HF, Digital Slow Scan TV FSK
• IRLP- VHF Internet Radio Linking Protocol, radio
  to radio
• ECHO LINK- Internet, radio to radio/internet to
  radio

3
Bases

• Pulse Shaping
• Multipath Reduction
• Error sensing
• Error correction
• Bandwidth reduction
• Common Signals
• Band sharing

4
Modos de Teléfono

• PCM-64 kbs X24T1,1.54 X32E12.048
• ADPCM-32kbs CCITT G.721
• X.25 Packet used in PABX and LANs
• WLL-Wireless Local Loop, 3.5Ghz,CDMA
• ATM with Fiber Optics FDDI
• Fiber Optics -SONNET, WDM

5
Rates

• Americas
• X1 PCM 64KBS
• X24 T1 1.544Mbs
• X672 T3 44.736Mbs
• X4032 T4 274.176Mbs
• SONET 155/622Mbs

• Europe
• X1 PCM 64Kbs
• X32 E1 2.048 Mbs
• X480 E3 34.368Mbs
• X1920 139.264Mbs
• SONET 155/622Mbs

6
Modos de Teléfonos

• TDMA Early ATT Cellular system
• GSM European, Global System Mobil
• CDMA US, Code Division Multiple Acess
• DECT Digital European Cordless Telacom
• NEXTEL US,TDMA by Motorola
• 3G Future systems with higher data rates
• 4G Future systems with higher data rates

7
Telefonia Para Todos

• Hondutel and CONATEL WLL Wireless Local Loop at
  2.4 to 3.5 Ghz CDMA Code Division Multiple Acess.
  
• MultiFon and AirWay others
• Short Range Microwave from nearby omnidirectional
  antenna.
• May provide DSL like service,Voice and data on
  the same line, 1.5Mbs.

8
Modos de T.V. y Satelite

• Direct TV, KU Band Digital Television
• Echostar TV, KU Band Digital Television
• 8VSB TV, US Land Baised Digital TV Zenith
• DBS TV, Europe land baised Digital TV OFDM
• GPS Worldwide location and time service
• Consumer and Military, CDMA SS

9
Wireless Data

• 802.11- Wi-Fi 2.4Ghz 1-2Mbs
• 802.11b- 5.6Ghz 5-10Mbs
• CDPD- Cellular 800Mhz 19.3Kbs
• Bluetooth- 2.4 Ghz, short range 1Mbs
• 802.16- 5.6Ghz, High Security 100Kbs
• Mobiltex-US 900Mhz, EU 400Mhz 8Kbs

10
Modos de bandas AM, FM y SW

• XM- Satellite, 100 Ch Digital radio for Autos
• SIRIS- Satellite, 100 Ch Digital radio for Autos
• DRM -Digital Radio Mondel for ShortWave
• IBOC- US,Digital Radio in AM Radio Band
• DAB- Europe, Digital Radio, FM type

11
Modos para Radios de Banda Corta and Bippers

• POCSAG - Paging 150-900 Mhz, 1200 Bps
• FLEX- Paging, Motorola 2400-5600 Bps
• ERMES- Paging European 5600Bps
• Project-25- Digital Trunking Radio 9.6Kbs
• TETRA- Digital Trunking Radio 36Kbs

12
Paginas en Internet

• www//Tapr.org
• www//arrl.net

13
Biblografia

• RF Datamate WWW.ifrsys.com
• Communicaciones De VozYDatos J.M. Huidobro EP
  editorial Paranifo ISBN 84-283-2165-5
• Teleiformitica Aplicada Lechtaler, Fusario,
  McGraw Hill, ISBN 84-481-1917-7
• Redes De Computadoras Tergera Edicion, Tanenbaum,
  PPH Prentice Hall ISBN 968-880-958-6