Free Bits The Challenge of the Wireless Internet. Roy Yates Rutgers University. Wireless Data over 2G Cellular. Cellular Voice: Anytime Anywhere Slow : 10K bps High cost/bit v cents/min voice = 13 v cents/MB Data over Cellular: Slow and Expensive: 20 cents/min voice = $2.60/MB.
But voice is still 10K bps v cents/min = 13v cents/MB
How do we deliver free bits over radio?
HIGHER DATA RATE!
6M bps (64 QAM)
2M bps (QPSK)
See [Borras & Yates, WCNC 99]
Light LoadSimple ModulationWide Coverage
Heavy LoadComplex ModulationLimited Coverage
E-mail voice mail
Very high data rates!!
New problems everywhere in the stack!
High Bit Rates