Chaotic Pulse Position Coded PDUs for Secure and Energy-Efficient Data Networking

This paper presents a novel mechanism for implementing Chaotic Pulse Position Coded Protocol data units (CPPCPs) for networking in sensor and IoT networks with thin energy budgets. The core idea of CPPCP is to encode a protocol data unit (PDU) in terms of Ultra-Wide Band (UWB) pulse train with chaotically varied inter-pulse intervals. The proposed CPPCP architecture fulfills the communication security by achieving higher randomness between different data symbols, lower probability of unambiguity, and significant energy savings by using a smaller number of pulse transmissions than the existing chaotic coding schemes in the literature. A concrete analysis for the implementation of CPPCP is provided based on the variation of pulse shape and position caused by specific hardware characteristics. A prototype sensor platform is designed for the implementation of CPPCP. Extensive simulation results are presented for evaluating the performance of the proposed architecture.