Systems Seminar
Iterative Detection of Shaped Offset QPSK
Erik Perrins
Department of Electrical and Computer Engineering
Brigham Young University
Abstract
Shaped Offset QPSK (SOQOSK) is a highly bandwidth-efficient
constant-envelope modulation. It has been used primarily with
symbol-by-symbol OQPSK-type detectors, which do not exploit the inherent
memory of its continuous phase modulation (CPM) nature. In this talk,
serially concatenated SOQPSK systems with iterative detection are
examined, where SOQPSK is viewed as the inner code of the system. A
number of reduced-complexity designs are presented. In particular, it
is shown that all versions of SOQPSK, from the simplest to the most
complex, can be treated with a simple, common architecture.
Bio
Erik Perrins is a graduating PhD student from the Department of
Electrical and Computer Engineering at Brigham Young University. He
also received his BS in 1997 and his MS in 1998 from BYU, both in
electrical engineering. From 1998-2004 he was with the Advanced
Technology Group of Motorola in Schaumburg, IL. Since 2004 he has been
an industry consultant, in addition to finishing his studies at BYU.
His research interests are digital transmission theory, modulation and
coding, and signal processing.
Time and Place: Mon., Feb. 21, at 3:30 pm in 4610 Engr. Hall.
*** NOTE SPECIAL DAY ***
SYSTEMS SEMINAR WEB PAGE:
http://homepages.cae.wisc.edu/~gubner/seminar/