Pseudorandom sequences in spread-spectrum communications generated by cellular automata
Ordaz Salazar, F.C.
González Salas, j.s.
Campos Cantón, Eric
Rosu Barbus, Haret-Codratian
"Dynamical systems methods have been recently used in spread-spectrum digital communication systems. The expansion of the spectrum using a pseudorandom sequence with a higher frequency than the information signal is the key feature for its robustness against the signal traveling interference through the channel. In this work, we propose to generate pseudorandom sequences by employing cellular automata and we check these sequences have the necessary properties which are required in modern communication systems. The computed sequences obtained by the cellular automata are tested in a quadrature phase shift keying (QPSK) spread-spectrum communication system. The efficiency of the system is analyzed by computing the bit error rate under different signal to noise ratio conditions. These results are compared with systems that employ Golden code and other typical pseudorandom sequences."
Fecha de publicación2012
Tipo de publicaciónarticle
Área de conocimientoCIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA
Palabras clavePseudorandom sequences
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