A simple but complete mobile wireless network simulator based on Matlab.

What does wireless-matlab provide?
Radio propagation: free space, two-ray, and lognormal shadowing
Mobility: random waypoint model
PHY: SNR-based packet capture, broadcast, dynamic transmission rate and power
MAC: IEEE 802.11 (CSMA/CA, virtual carrier sense, and RTS-CTS-DATA-ACK)
NET: ad hoc routing
APP: overlay routing protocols