Signal Processing
TETRA (TErrestrial Trunked RAdio) is a wireless specification intended to be used by government agencies, public health services, rail transport, military etc. TETRA specification comes from ETSI (European Telecommunication Standards Institute). We plan to start a post series on the building blocks of TETRA physical layer and radio specifications and this is the first post towards that step.
Continue reading “TETRA Air interface specifications – Overview”
In this post, the objective is to figure out the minimum separation between two sinusoidals having frequencies ,
of duration
each to be orthogonal. Let the phase difference between the sinusoidals is
where
can take any value from
to
(Refer Example 4.3 [DIG-COMM-SKLAR]
For the two sinuosidals to be orthogonal,
Continue reading “Minimum frequency spacing for having orthogonal sinusoidals”
In DSP-Proakis, I found the problem 2.56 interesting as it provides insight into delta modulation. The task is to show that,
where
is any discrete time signal and
is the unit step function.
