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www.WirelessCommunication.NLChapter: Authors and Contributors |
John Davis' research interests lie in the field of wireless communications at
the systems level. To date, he has
been involved with work at the physical level, datalink level and
network level.
At the physical level, he did both indoor and outdoor propagation
measurements. Indoor measurements were taken within Cory Hall (U.C.
Berkeley) at 2.4 GHz while outdoor measurements involved the PATH
Intelligent Vehicle Highway Project and considered propagation at 900 MHz
between vehicles in single file. Both the indoor and outdoor measurements
used a network analyzer and disc-cone antennas (omnidirectional) to
measure the frequency response of a stationary environment with a given
separation distance between the receive and transmit antennas. In both of
the measurements above, time delay spread, path loss rate, and Rician K factor
were measured.
John Davis worked on network software configuration
while interning at the
IBM T.J. Watson Research Center in Yorktown Heights, NY. The job involved
configuring IBM RF wireless PCMCIA adapter cards to run TCP/IP over a
wireless link. The adapter cards allowed a wireless LAN to be set up with
portable computer (most notably, IBM's ThinkPad) and the TCP/IP
configuration allowed the wireless LAN to connect to the Internet. The
adapter cards adhered to a slow frequency hopping protocol.
Most recently, he has been working on datalink protocols for the InfoPad
project. Specifically he has studying the Virtual Cell concept and Space
Time Reservation Multiple Access
(STRMA) with intent to
implement these schemes as the uplink of the InfoPad system. STRMA and
Virtual Cells provide an elegant approach to dynamic channel allocation
using decentralized control.
John Davis contributed (portions of) pages on
