QPER (Qosmotec Propagation Effects Replicator) is a Channel Simulator, based on the newest and most powerful digital processing technology on the market.

QPER replicates all relevant propagation conditions:

• Path Loss
• Delay
  
• Phase Shift
• Doppler Shift
• Doppler Spread
• Additive White Gaussian Noise
• Multipath Models with Fading Simulation

Users appreciate the dynamic simulation with QPER. All propagation effects can be achieved in a virtual landscape with real-life like sceneries of moving subscribers and are automatically adjusted in the channel simulator. What you see is what you get!

For pure Handover Simulation, Qosmotec provides the very cost-effective variant AIS (Air Interface Simulator) based on digitally controllable attenuators.

All signal strength effects including fast fading, replay of drive tests and simulation of network propagation and optimization results can be executed on flexible configurations, connecting base stations with mobiles in the test lab.