Non-relatively measurable spread-sequences for secure transmission of direct-sequence spread-spectrum signals
作者： Jacek Leskow , Antonio Napolitano
DOI:
关键词: Algorithm 、 Modulation 、 Statistics 、 Demodulation 、 Direct-sequence spread spectrum 、 Sequence 、 Signal 、 Secure transmission 、 Estimator 、 Autocorrelation 、 Mathematics
摘要: In this paper, a new technique to design signals for secure transmissions is proposed. The proposed does not allow an unauthorized third party discover the modulation format and, hence, demodulate signal. signal-design consists in adopting non relatively measurable sequence as spreading direct-sequence spread-spectrum Non sequences are such that appropriate time averages do converge data-record length approaches infinite. Thus, none of their statistical functions defined terms infinite-time convergent. Therefore, also modulated continuous-time signal exhibits convergent functions. Consequently, all classification methods based on measurements autocorrelation function, moments, and cumulants fail identify characteristics format. Simulation results provided show lack convergence, data record increased, estimators second-order cyclic statistics designed
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