Hi Mike, thanks again.
Taking it to a case where a mobile station (MS, i.e. cell phone) communicate with a base station (BTS), and the uplink (from MS to BTS) reaches the BTS in several paths, then you say that in order to solve this problem, the MS would need to decrease/increase (?) its carrier frequency? (in order to increase/decrease the wavelength, respectrively).
However, I don't think that it's possible for the MS to change its carrier frequency; is it?