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In this paper, a design of two-layered pseudonoise (PN) code for optical-wireless code-shift keying (CSK) is considered. One of the important issues encountered in optical-wireless CSK systems is to design a PN code for enhancing code division multiple access (CDMA) capability and a ratio N/L between the number of codes (N) and the PN code length (L). In this paper, a CSK system using two-layered...
In this paper, we analyze the bit error rate (BER) performance of synchronous optical code division multiple access (OCDMA) system using an optical zero-correlation zone (ZCZ) sequence set over diffuse link by computer simulation, and evaluate the influence of inter-symbol interference (ISI) on the system. The optical ZCZ sequence set is a set of pairs of binary and bi-phase sequences with zero-correlation...
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