Issue 11-12, 2014
ELECTROTECHNICA & ELECTRONICA E+E
Vol. 49. No 11-12/2014
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA
C O N T E N T S
TELECOMMUNICATIONS SCIENCE
Marin V. Nedelchev, Ilia G. Iliev
Synthesis of microstrip filters based on miniaturized hexagonal resonators 2
Kalin L. Dimitrov, Lidia T. Jordanova, Tsvetan A. Mitsev
Computer simulation of distortions in optical fiber for CATV systems 9
Tsvetan A. Mitsev, Nikolay K. Kolev
Optimal divergence of laser beam in optical wireless communication systems 15
Lidia T. Jordanova, Dobri M. Dobrev
Transmission quality assurance in the design of HFC television network 21
Todor D. Tsvetkov, Ilia G. Iliev
DOA algorithms noise performance analysis for cognitive radio systems 28
Lidia T. Jordanova, Lyubomir B. Laskov, Dobri M. Dobrev
Application of high order APSK modulations in satellite digital video broadcasting 34
Marin V. Nedelchev, Ilia G. Iliev
Research of miniaturized hexagonal resonators 42
