An Activity in LIVE
Professor William Birmingham
Chair, Computer Science Department
Grove City College
724 458 3794
defined radio (SDR) is an important technology that underlies many modern wireless communication
systems. For example, most
and wireless routers
are based on SDR technology.
technology is popular among computer scientist
, with several interesting software projects underway, such as the
adio’s SDR 1000
and SDR 5000
much of the electronics in a radio with software
. By substituting many hardware
components for software, SDR prov
flexibility with baseband waveforms, frequencies, and features. The
software necessary to drive an SDR includes real
time signal processing,
user interface, and other processing
n SDR is a self
embedded software system with real
time deadlines and hardware
rely on some hardware, minimally a down
converter and A/D for receiving and a D/A and
converter for transmitting. While the hardware circuitry is well
can be challenging to
operating frequencies are, naturally enough, in the radio frequency (RF) spectrum. While cell phones
are typically in the GHz range, our applications are in the
100 MHz range, specially, the
and commercial radio bands.
he SDR has become a popular research project
with the following applications.
In this project, we are
based SDR systems
Creating these “portable” SDR
allow emergency personnel to
a variety of radio bands during disasters. In
addition, these radios will work on the amateur radio frequencies.
Because most communications systems other
than amateur radio go down during
, SDR could allow emergency personnel to gain the information they
need in a dependable fashion.
Additionally, there were significant communications mismatches between police,
firefighters and other emergency pers
onnel during Hurricane Katrina and the September 11
terrorist attacks. The
f SDR could help to rectify miscommunication
between different branches of public servants.
We are developing addition
commercial radio broadcasts of digital AM and FM, commonly called
definition” radio. These new waveforms are intended to give AM radio the quality of current FM stations and
the quality of CDs.
Based on the
decoders for these waveforms. This is a pure software
project using the same down
converting hardware as the other SDR projects.
Mobile Gaming Platforms
Mobile gaming is an important emerging technology. Electronic Arts,
Microsoft, and Google, for example,
have made major commitments to mobility. We are interested in developing high
performance computing and
communication platforms specifically to support mobile gaming
, communication and computation
nterested students are encouraged to take Computer Science department courses in digital
processing and in
. These courses provide the in
depth exposure to the mathematics, software, and system
concepts in SDR.
tudents, from sophomore through senior years, are encouraged to participate in
. Please contact Professor Birmingham