Irreducible BER floor is created in frequency selective channels due to ____________(a) Intersymbol interference(b) Random spectral spreading(c) Time varying Doppler spread(d) Blind speedI have been asked this question in semester exam.This interesting question is from Modulation Performance in Fading and Multipath Channels in portion Modulation Techniques for Mobile Radio of Wireless/Mobile

Irreducible BER floor is created in frequency selective channels due t

1.	Irreducible BER floor is created in frequency selective channels due to ____________(a) Intersymbol interference(b) Random spectral spreading(c) Time varying Doppler spread(d) Blind speedI have been asked this question in semester exam.This interesting question is from Modulation Performance in Fading and Multipath Channels in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
Answer» Right option is (a) Intersymbol interference To EXPLAIN I would SAY: Frequency SELECTIVE fading is caused due to multipath delay spread which CAUSES intersymbol interference. It results in an irreducible BER FLOOR for mobile systems.

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