Premium
Optimising DVB‐S2 spectral efficiency with hierarchical modulation for broadband applications
Author(s) -
Méric Hugo
Publication year - 2015
Publication title -
international journal of satellite communications and networking
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.388
H-Index - 39
eISSN - 1542-0981
pISSN - 1542-0973
DOI - 10.1002/sat.1170
Subject(s) - computer science , spectral efficiency , broadband , broadcasting (networking) , transmission (telecommunications) , digital video broadcasting , context (archaeology) , computer network , telecommunications , channel (broadcasting) , real time computing , paleontology , biology
Summary We study the design of a digital video broadcasting ‐ satellite ‐ second generation broadband system in order to maximise spectral efficiency. This task is usually challenging because of channel variability. The solution adopted in modern satellite communications systems relies mainly on a time‐sharing strategy. Recently, we demonstrated the advantage of combining time sharing with hierarchical modulation to increase the transmission rate of such systems. However, the optimal spectral efficiency remained an open question. In this paper, we show that the optimal transmission rate is the solution of a linear programming problem. We study the performance of the optimal scheme for interactive satellite services in the context of a digital video broadcasting ‐ satellite ‐ second generation system. Copyright © 2015 John Wiley & Sons, Ltd.