ece 250a

ece 250a - ECE 250: Wireless Communications and Networking...

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ECE 250: Wireless Communications and Networking Lecture 1 Prof. Volkan Rodoplu UCSB Spring 2005 Acknowledgments: Prof. Ted Rappaport, Prof. Narayan Mandayam, Prof. Andrea Goldsmith
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Computer Science Electrical Engineering OSI Model PHY Link Network Application Spectrum
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Why go wireless ? Advantages Sometimes it is impractical to lay cables User mobility Cost Limitations Bandwidth Fidelity Power (In)security
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Wired Vs. Wireless Communication Wired Wireless Low interference (Cross-talk) Each cable is a different channel One media (cable) shared by all Signal attenuation is low High signal attenuation High interference noise; co-channel interference; adjacent channel interference
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Wireless Systems: Range Comparison Satellite Links SW Radio MW Radio FM Radio Mobile Telephony, WLL WLANs Blueooth IR 1,000 Km 100 Km 10 Km 1 Km 100 m 10 m 1 m
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Cellular Systems
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This note was uploaded on 05/01/2011 for the course ECE 250 taught by Professor Rodoplu,v during the Spring '08 term at UCSB.

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ece 250a - ECE 250: Wireless Communications and Networking...

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