A SIMPLE MULTILEVEL BLOCK-CODING SCHEME WITH PI 4-QPSK PROPERTIES/

Authors
HENKEL W LITZENBURGER M
Citation
W. Henkel et M. Litzenburger, A SIMPLE MULTILEVEL BLOCK-CODING SCHEME WITH PI 4-QPSK PROPERTIES/, European transactions on telecommunications and related technologies, 4(5), 1993, pp. 489-494
Citations number
NO
Categorie Soggetti
Telecommunications
Journal title
European transactions on telecommunications and related technologies → ACNP
ISSN journal
11203862
Volume
4
Issue
5
Year of publication
1993
Pages
489 - 494
Database
ISI
SICI code
1120-3862(1993)4:5<489:ASMBSW>2.0.ZU;2-R
Abstract
A multilevel block-coded QPSK with a similar envelope and trajectories as pi/4-QPSK is proposed. Additionally, it is rotationally invariant and, thus, allows coherent detection. The asymptotic coding gain is 3 dB, whereas the effective coding gain at a bit-error probability of 10 (-6) is around 2 dB against uncoded pi/4-QPSK. The corresponding trell is of a full maximum-likelihood decoder has only four states, which re sults in a very low complexity.