Serial demodulation of an OQPSK direct sequence spread signal
Rasmussen, D.J.
Davis, G.
ITT, Fort Wayne, IN;
This paper appears in: Tactical Communications Conference, 1992. Vol. 1 Tactical Communications: Technology in Transition., Proceedings of the
Publication Date: 28-30 Apr 1992
On page(s): 171-179 vol.1
Meeting Date: 04/28/1992 - 04/30/1992
Location: Fort Wayne, IN, USA
ISBN: 0-7803-0745-3
References Cited: 9
INSPEC Accession Number: 4503397
Digital Object Identifier: 10.1109/TCC.1992.247148
Posted online: 2002-08-06 18:15:32.0
Abstract
A general equation is derived for modulation waveforms which can
be serially demodulated. This equation is used to define the modulation
structure for SOQPSK (serial offset quadrature phase shift keying).
Coherent serial demodulation is shown to perform with the same BER (bit
error rate) peeeance as a parallel demodulator for the condition of
optimum correlation detection. Serial noncoherent detection is shown to
provide intersymbol interference which increases the false correlation
level if the spreading codes are not chosen properly. A computer
simulation was developed which allowed the performance of coherent and
noncoherent SOQPSK detection to be studied. The simulation results
verified the analytical calculations
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
