My research work under
Dr. Andy Lippman at MIT Media Labs in Cambridge, MA was on inventing an
architecture for AM band software defined radio, where the signal demodulation
as well as tuning are both done in software. This makes the system flexible and
future proof. We present a novel design for Pervasive
Radio Receivers for AM band capable of receiving multiple AM stations. The
receiver interface provides users option of simultaneously tuning to multiple
channels, pausing a channel in real time and starting again from the point
where one left from etc. The receiver user interface provides a visualization
of the whole band showing the valid available channels making the system
intuitive to operate. Applications involve use of Pervasive Radios in Internet
connected cars to defence use. US Army can use the Pervasive radio receivers
to modulate and encode the sensitive communication before sending it, where the
RF signal modulation and encoding can change on a daily basis to make it hard
for any hostile interception of the sensitive information. Since the
demodulation is done in software, the demodulation algorithm can be changed on
the fly via a software update to the army radio receivers.
XMOHAN