Title :
Propagation effects in synchronous underground CDMA systems
Author :
Badescu, Alina-Mihaela ; Petrescu, Teodor ; Marcu, Ioana ; Fratu, Octavian ; Halunga, Simona
Author_Institution :
Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
This paper investigates the behavior of a CDMA system in conditions of underground propagation collaborated with QPSK modulated signals. The antennas contained in boreholes were modeled as transmission lines. We studied the influence of the impurities of the propagation medium and also presented the role of the dimensions of the drilled cavity that the antennas are contained in. We also investigated the noise introduced by linear quantization. Following the simulation results several conclusions can be drawn in the last chapter.
Keywords :
antennas; code division multiple access; quadrature phase shift keying; underground communication; QPSK modulated signal; antenna; drilled cavity; linear quantization; synchronous underground CDMA system; transmission lines; underground propagation; Dielectrics; Dipole antennas; Permittivity; Phase shift keying; Power transmission lines; Receiving antennas;
Conference_Titel :
Telecommunication in Modern Satellite Cable and Broadcasting Services (TELSIKS), 2011 10th International Conference on
Conference_Location :
Nis
Print_ISBN :
978-1-4577-2018-5
DOI :
10.1109/TELSKS.2011.6112025
