A mathematical framework for resource management in wireless networks
In a mobile radio channel, nature performs a Laplace transform of the link performance
Outline
WIRELESS RANDOM-ACCESS
The Wireless Channel
Statistical Fluctuations
Multipath fading
Multipath Reception: Channel fluctuations
Models for Multipath Fading
Time dispersion of narrowband signal (single frequency)
Rayleigh Model
Received Amplitudes
Received Power
Ricean Multipath Reception
Ricean Amplitude
Ricean Power
But there are more effects than just multipath reception:
Shadowing
Summary: Commonly used models
Model for Analysis of Performance
Simplified model for successful reception
Probability of Successful Transmission
Cellular Telephony
Cellular Telephone Networks
Outage Probability for Cell. Telephony
More math in cell planning
Packet Switching
Random Access
Suitable Protocols
ALOHA Protocol
Capture effect and Near-far effect
Common Performance Analysis Assumptions
Poisson Field of Interferers
Example: Poisson Field of Interferers
Example: California PATH
But, ... what happens if terminals retransmit lost packets?
Uniform throughput in cellular ALOHA
What about the interaction between cells?
Cellular ALOHA
Inter and Intracell Collision Resolution
DS-CDMA ALOHA Network
Intuition
Intuition and Analysis
Collision Resolution
Stack Performance
Packet Delay versus Traffic
Stack Performance in Cellular System
if the traffic has a repetitive component ....
Space Time Reservation Multiple Access
How to design the downlink ...
Downlink
Cellular aspects of packet transmission
Conclusions
Email: linnartz@per.nl
Home Page: http://wireless.per.nl
Other information: Diderot forum, November 2001