Open AccessConstellation and Mapping Optimization of APSK Modulations used in DVB-S2
Author(s) -
L. T. Jordanova,
Л. Б. Ласков,
D. Dobrev
Publication year - 2014
Publication title -
engineering, technology and applied science research/engineering, technology and applied science research
Language(s) - English
Resource type - Journals
eISSN - 2241-4487
pISSN - 1792-8036
DOI - 10.48084/etasr.496
Subject(s) - constellation , amplitude and phase shift keying , digital video broadcasting , computer science , satellite constellation , algorithm , mathematics , quadrature amplitude modulation , telecommunications , bit error rate , physics , decoding methods , astronomy
This article represents the algorithms of APSK constellation and mapping optimization. The dependencies of the symbol error probability Ps on the parameters of the 16APSK and 32APSK constellations are examined and several options that satisfy the requirements to the minimum value of Ps are selected. Mapping optimization is carried out for the selected APSK constellations. BER characteristics of the satellite DVB-S2 channels are represented when using optimized and standard 16APSK and 32APSK constellations and a comparative analysis of the results achieved is made.