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I didn't find a suitable tag for this, but figured it would fit under "Frequency spectrum".

Which of the Spread-spectrum systems listed here are most resistant to multipath fading? Please, briefly tell me why?

The Wikipedia article above lists these (or a combination of at least 2?):

FHSS: Frequency-hopping spread spectrum.
DSSS: Direct-sequence spread spectrum.
THSS: Time-hopping spread spectrum.
CSS: Chirp spread spectrum.

Are there other distinct techniques the article doesn't list?

--gv

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    $\begingroup$ This is way too broad a question. Multipath fading comes in various forms, the fading parameters and the system parameters interact in various ways, and the question "Which is best against multipath?" does not necessarily have a unique answer. As in so many other things, it depends. $\endgroup$
    – Dilip Sarwate
    Commented Feb 17, 2012 at 2:01

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FHSS is hopping between the carrier frequencies. Therefore, if a carrier is in the deep fade, it is probable that the others are not (assuming that the frequency hops independently experience the fading effect). If you are using a strong coding technique (such as Turbo, LDPC), the fast fading effect brings an enormous amount of diversity gain!

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