Abstract
Chaos communication system is possible to improve the system security by using chaos signal. Further, it is possible to reduce the possibility of eavesdropping, and has strong characteristics from interference signal and jamming signal. However, BER performance of chaos system is worse than digital communication system. By this reason, researches for BER performance improvement are being studied actively. In previous studies, we proposed a novel chaos map for BER performance improvement, and called it ‘Boss map’. Also, we proposed a novel chaos transceiver for BER performance improvement. However, BER performance is evaluated differently according to delay time of chaos transceiver. Therefore, for effective using of Boss map, we should find the optimal delay time in CDSK system and proposed chaos transceiver. In this paper, when Boss map is used, we evaluate BER performance of CDSK system and proposed chaos transceiver according to delay time. Also, we find a delay time that is possible to have best BER performance in CDSK system and novel chaos transceiver after evaluation of BER performance according to delay time.
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