Improving
the efficiency of communication systems with OFDM-signals
E.
N.
Rychkov,
V.
G.
Patyukov
Institute
of Engineering Physics
and Electronics,
Siberian Federal University
The paper is received on December 2, 2015
Abstract.
Problems
of the development of communication systems with OFDM-signals on the example of
the software-defined radio are considered, features of the algorithms of these
systems are studied, such as tone reservation method and the possibility of
varying the type of transformation, as well as recommendations for modification
of the algorithms used. The method of creating a broadband modem on
software-defined radio system is researched. The results allow to obtain a
qualitatively new communication systems, especially for tropospheric and
satellite solutions.
Key words:
OFDM, software defined radio system, the
method of reservation tone, PAPR, cosine transform, phase shift keying, algorithms QAM, MATLAB.