Wireless Channels:Small Scale Fading

(Multipath and Doppler Effect)

These slides contains copyrighted materials from Prentice Hall Inc.. These figures are provided as instructor resources, and sources of these figures are:Wireless Communications and Networking, Jon W. Mark, Weihua ZhuangWireless Communications: Principles and Practice, Theodore S. Rappaport

Wireless Communications 06-88-440-01

Doppler Shift Geometry

Channel issues

Complex Baseband model for RF systems

Time-varying impulse response

Linear Time Invariant (LTI) channel

Linear Time Variant (LTV) channel

Multipath propagation

Measured impulse responses

Measured power delay profiles

Indoor Power Delay Profile

Two independent fading issues

Flat-fading (non-freq. Selective)

Frequency selective fading

Two independent fading issues

Rayleigh fading

level crossing