SECURITY AND BER PERFORMANCE TRADE-OFF IN WIRELESS COMMUNICATION SYSTEMS APPLICATIONS

ARNONE, L. J.; GONZALEZ, C. M.; GAYOSO, A.; CASTIÑEIRA MOREIRA, J.; LIBERATORI, M. C.

LATIN AMERICAN APPLIED RESEARCH

LATIN AMERICAN APPLIED RESEARCH

Lugar: BAHIA BLANCA; Año: 2009 vol. 1 p. 187 - 192

0327-0793

There is nowadays a strong need of designing communications systems with ex-cellent BER performance and high levels of pri-vacy, specially in wireless networking and mo-bile communications. The transmission of encrypted information over a noisy channel presents an error prop-agation effect, which degrades the BER perfor-mance of the system. In this paper, we present combined error-control coding and encryption schemes based on iteratively decoded error-control codes like LDPC and turbo codes and AES algorithm. We show that the proposed schemes strongly reduce this degradation effect. The increase of the level of privacy is ob-tained by using procedures of pseudo random nature over the encoders and decoders of the error-control code.Thus, the proposed schemes provide a given communication system with excellent BER per-formance and encryption capabilities.