In this paper, chaos based interleavers are proposed for the performance improvement of Interleave Division Multiple Access (IDMA henceforth) for future radio communication (FRC) requirements. ‘IDMA’ can be mean as the modified case of direct sequence code division multiple access (DS-CDMA) with the same spreading sequences and user specific interleavers for distinguishing the users in multi-us...

Abstract In an isolated system, the time evolution of a given observable in Heisenberg picture can be efficiently represented Krylov space. this representation, initial operator becomes increasingly complex as goes by, feature that quantified by complexity. We introduce fundamental and universal limit to growth complexity formulating Robertson uncertainty relation, involving Liouvillian, genera...

This paper proposes a new four-dimensional hyperchaotic map based on the Rabinovich system to realize chaotic encryption in higher dimension and improve the security. The chaotic sequences generated by Runge-Kutta method are combined with the chaotic sequences generated by an exponential chaos map to generate key sequences. The key sequences are used for image encryption. The security test resu...

Increased globalization, varying customer requirements, extended product lines, uncertainty regarding supplier performance, and myriad related factors make supply chains utterly complex. While previous research indicates that chain complexity plays an important role in explaining performance outcomes, the accumulating evidence is ambiguous. Thus, a finer-grained analysis required. By meta-analy...