What is Wireless Communication?

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Presentation transcript:

What is Wireless Communication? Transmitting/Receiving voice and data using electromagnetic waves in open space. The information from sender to receiver is carrier over a well defined frequency band (channel). Each channel has a fixed frequency bandwidth and capacity (bit-rate) Different channels can be used to transmit information in parallel and independently. 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Why Wireless Communication? Freedom from wires No cost of installing wires or rewiring Mobile devices possible E.g.: Bluetooth, WiFi Stay connected Roaming allows flexibility to stay connected anywhere and any time 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Wireless Communication Wireless Vs Mobile Wireless does not necessarily mean mobile. Wireless System may be: Fixed (e.g. Metropolitan Area Network) Portable (e.g. Wireless interaction between TV and VCR) Mobile (e.g. Mobile phone) 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Telecom Service provider of Nepal Wireless Communication Telecom Service provider of Nepal NDCL- Nepal doorsanchar Company limited NCELL UTL- United Telecom Limited STM- STM Telecom Sanchar Pvt.Ltd NSTPL- Nepal Satellite Telecom Pvt.Ltd STPL- Smart Telecom Pvt.Ltd 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Wireless Communication Available Voice Telephony Services Telecom Statistics at a glance (as of Ashad, 2070, 15 July, 2013)-NTA MIS Report Available Voice Telephony Services LMS-Location and Monitoring services GMPCS-Global Mobile Personal Communication by Satellite 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Wireless Communication Data Internet services Telecom Statistics at a glance (as of Ashad, 2070, 15 July, 2013)-NTA MIS Report Data Internet services 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Current Wireless Systems Wireless Communication Current Wireless Systems Cellular Systems Wireless LANs (802.11a/b/g, Wi-Fi) Satellite Systems Paging Systems Bluetooth Ultrawideband radios (UWB) Zigbee/802.15.4 radios WiMAX (802.16) 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Wireless Communication Emerging Systems Cognitive radio networks Ad hoc/mesh wireless networks Sensor networks Distributed control networks The smart grid Biomedical networks 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Current Research by Prof. Theodore (Ted) S. Rappaport Wireless Communication Current Research by Prof. Theodore (Ted) S. Rappaport Latest research in millimeter wave cellular propagation and broadband communications using adaptive antennas – 5th Generation Cellular 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College

Wireless Communication Thank you!! 12/31/2018 Department of Electrical and Electronics, Nepal Engineering College