Channel estimation for Rayleigh frequency selectiv
2016-08-23
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Frequency selective fading channel
Generate Rayleigh multipath fading with Clarke' Model
return channel impulse response h, coherence time Tc, symble period Ts and channel length Lc
GSM in Urban environment, according to textbook Table5.1according to textbook equation 5.39 Bc<Bs ==>5ds>Ts or equation 5.44 Ts<ds
according to textbook equation 5.47 Ts<<Tc
so Ts<ds & Ts<<Tc
suppose Ts=1/bandwidth=5us
In Urban environment, we choose ds=10us, Coeff*vc/(velocity*fc)~=1ms
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