By Topic

Data recovery in differentially encoded quadrature phase shift keying

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Bard, J.D. ; Mnemonics Inc., Melbourne, FL, USA ; Nezami, M.K. ; Diaz, M.E.

Information in a PSK modulation format is contained in the phase. For Gray-coded DEQPSK, this information is contained in the change in phase. With advances in DSP technology, fundamental trigonometric signal processing functions which have, in the past, been unavailable, now provide a mechanism for recovering the phase differential directly from the phase plane. This paper presents a new algorithm for recovering step phase changes for a DEQPSK modulated signal by computing the phase angle from the arctangent of the ratio Q/I and comparing it with the previous phase. This phase difference is then mapped to a monotonic metric for the purpose of soft-decision Viterbi decoding

Published in:

MILCOM 2000. 21st Century Military Communications Conference Proceedings  (Volume:2 )

Date of Conference:

2000