  Macroscopic diversity in radiomobile systems is a technique in which the
terminal is in parallel connection with two base stations. It is a fundamental
element in the operation of third generation mobile networks using CDMA. (IS
95, UMTS, etc.). A representation of the propagation phenomena involved
requires joint modeling of the two transmission channels. The article presents
a very simple method for simultaneously measuring their impulse responses,
developed for this purpose. This method was the subject of a patent. It can
more generally be applied to any number of channels and should allow the reuse
of already existing single-channel sounders.
