Software radio is an emerging technology, thought to
build flexible radio systems, multiservice, multistandard, multiband,
reconfigurable and reprogrammable by software. The flexibility of a
software radio system consists in its capability to operate in
multiservice environments, without being constrained to particular
standard, but able to offer, services of any already standardized
systems or future ones on radio frequency band. The presence of the
software defining the radio inter face necessarily implies the use of
DSPs to replace dedicated hardware to execute, in real-time, the
necessary software. Digital communication standard are generally based
on different master clock rates. Thus sample rate conversion is
required in systems that possess signals of different communication
standards..
