csc7702 06louisiana state university 2 wireless transmission 1 arjan durresi csc lsu edu these slides are available at http www csc7702_06 frequencies signals antenna signal propagation multiplexing spread spectrum modulation cellular systems overview 3 why mobile networking negroponte s switch personal communications go on ether broadcast cable frequency probably the most valuable natural resource progress in microelectronic very smart terminals more open for business opportunities phone only technology with a growth rate higher than internet by year 2003 700 millions users and 830 4 computers next decades integrated small cheap portable replaceable no separate devices is background computer aware of their environment adapt location awareness recognize user react appropriately eg call forwarding fax context advances computing power smaller flat lightweight displays low consumption new interfaces due to dimensions bandwidth per