4G Networks Presentation for Technicians and IT managers

4 th Generation Network At the end of this presentation: You will be able to describe the advantages of a 4G network You will be acquainted with the enabling technologies of 4G networks

Basics – What is a cellular network Radio Telephone Transmitters and receivers (antennas) A switch Receiver Caller

Network Generations TechnologySpeedDefinitionGeneration AMPS, NMT, TACS14.4kbpsAnalog1G TDMA, GSM, CDMA, GPRS 14.4kbps(Digital)Packet data2G CDMA2000, UMTS, EDGE,HSPA 144kbps – 3mbpsBroadband Packet Data 3G OFDM, WiMAX HSDPA, UMTS +100mbpsDigital broadband, over IP 4G

Data download – 5 MB 19kbps 7.2Mbps 100Mbps

Broadcast Access Technologies Data is broadcasted in various ways; Frequency Division Multiple Access(FDMA) Time Division Multiple Access(TDMA) Code Division Multiple Access(CDMA) Orthogonal Frequency Division Multiplexing(OFDM)

Frequency Division Multiple Access FDMA Analog One frequency per user t

Time Division Multiple Access TDMA Uses all the frequencies One frequency per time slot t

Code Division Multiple Access CDMA Uses all available frequencies Unique ID for each call Bandwidth efficient t

Orthogonal Frequency Division Multiplexing OFDM High data rates IP based Less interference t

Fifth Generation Higher data rates – GIGA BYTES Ultra bands Synchronization between networks

Conclusion In the near future: 4G networks will enable quick and efficient data transfer Uses OFDM access technology Will use IP based transceivers