Introduction to Wireless Communications - ERNET

Wireless CommunicationsIntroduction to Wireless CommunicationsRanjan BoseDepartment of Electrical EngineeringIndian Institute of Technology, DelhiIndian Institute of Technology, DelhiRanjan BoseDepartment of Electrical Engineering2 Wireless CommunicationsOutline What is Wireless Communications ? History of Wireless Communications The advantages The challenges The types The Indian factor Existing Wireless Systems Emerging Wireless SystemsIndian Institute of Technology, DelhiRanjan BoseDepartment of Electrical Engineering3 Wireless CommunicationsWhat 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-definedfrequency band (channel) Each channel has a fixedfrequency bandwidthand Capacity(bit-rate) Different channels can be used to transmit information in paralleland independently. Indian Institute of Technology, DelhiRanjan BoseDepartment of Electrical Engineering4 Wireless CommunicationsExample Assume a spectrum of 120 KHzis allocated over a base frequency for communication between stations A and B Each channel occupies 40 KHzChannel 1 (b - b+40) Channel 2 (b+40 - b+80)Channel 3 (b+80 - b+120) Station AStation BIndian Institute of Technology, DelhiRanjan BoseDepartment of Electrical Engineering5 Wireless CommunicationsTypes of Wireless communication Mobile Cellular Phones (GSM / ) Portable IEEE (WiFi).

Wireless Communications Introduction to Wireless ... Wireless Communications What is Wireless Communication? ... Wired networks use this approach, ...

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  Network, Communication, Wireless, Wireless communications

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