TAILIEUCHUNG - Wireless Communication

MANET is an autonomous system of mobile routers (and associated hosts) connected by wireless links--the union of which form an arbitrary graph. The routers are free to move randomly and organize themselves arbitrarily; thus, the network's wireless topology may change rapidly and unpredictably. Such a network may operate in a standalone fashion. | Wireless Communication Mobile and Ubiquitous Computing Course Instructor: Dr. Zubair Shaikh A Presentation on: Presenter: Noman Islam Introduction The communication does not require physical cables Can be classified into: Fixed Wireless Network Wireless Network with Fixed Access Points Ad hoc network A Cellular Network Generations of Mobile Phones 1G – AMPS , ETACS, JTACS, NMT 2G – GSM, IS-95/CDMA One, GPRS, EDGE 3G – UMTS, CDMA 2000 4G – WiMAX, UMB Generations of Mobile Phones Generations of Mobile Phones 4G Vision 4G of Mobile Communication Fully Packet switched IP network Convergence Services Broadband Services Flexibility and Personalized Services Worldwide roaming Mobile Multimedia, Anytime Any where, Global Mobility Support, Integrated Wireless Solution and Customized Personal Services – MAGIC Software Defined Radios Ad hoc Networking Mobile Ad hoc Networks As defined by IETF: “MANET is an autonomous system of mobile routers (and associated hosts) connected by wireless links--the union of which form an arbitrary graph. The routers are free to move randomly and organize themselves arbitrarily; thus, the network's wireless topology may change rapidly and unpredictably. Such a network may operate in a standalone fashion, or may be connected to the larger Internet” US Future Combat System Ubiquitous Computing Disaster Recovery Automotive networks Ad hoc networks are expected to become part of future 4G-architecture Mobile Workers Sensor Networks Applications of MANET Acoustic Modems for Ubiquitous Computing Sound waves are characterized by: Comparatively Low data rate Sound waves can be localized within rooms No LOS Can be exposed to Humans Digital Voices project explores device communication using sound It analyzed common modulation techniques and the sounds they produce Applications of Accoustic Modems Can easily be deployed in the existing voice infrastructure Benefits from human awareness of the communication Requires short-range broadcasts enclosed within .

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