Title page for ETD etd-06082009-170949
|Type of Document
||Harmon, Andrew James
||Collision study for the one-way IVDS channel
||Master of Science
|Bostian, Charles W.
|Pratt, Timothy J.
|Sweeney, Dennis G.
- process gain
- jamming margin
|Date of Defense
A collision study is performed to compare the interference rejection characteristics
of two spread spectrum receivers, one employing a sliding correlator and the other using a
more sophisticated matched filter design. The testing involves using two similar
transmitters, one acting a the jammer, to test the collision dynamics of each receiver.
Packet data from both transmitters contain identical spreading codes. Data from the
testing is analyzed and the receivers' jamming margin, capture, and process gain qualities
are compared as to which system best optimizes a one-way channel.
Motivation for the collision study stems from researching a one-way
communication link for the Interactive Video Data Service ( IVDS ) project currently
being developed by the Center for Wireless Telecommunications ( CWT ) at Virginia
Tech. A novel retransmission technique has previously been developed which discusses
the probability of packet collisions on the channel and uses a computer program to
simulate the channel model. This thesis will provide more information as to what happens
in packet collisions as well as determine which receiver type offers the greatest
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