Orthogonal Chirp-Division Multiplexing for Power Line Sensing via Time-Domain Reflectometry

In this study, a time-domain reflectometry (TDR) system based on baseband version of the orthogonal chirp-division multiplexing (OCDM) scheme, which is relies modified discrete Fresnel transform (DFnT), proposed for power line sensing. After detailed description model, multiple access scheme that exploits contolution theorem DFnT enabling distributed reflectometric and transferometric sensing monitored line. Considering typical European underground low-voltage US overhead medium-voltage (MV) distribution networks, range resolution maximum unambiguous measurements are assessed scheme. Next, comparison with schemes Hermitian symmetric frequency-division (HS-OFDM) discussed in previous work performed considering Brazilian MV scenario, being number obtained over time, as well signal-to-interference-plus-noise ratio (SINR) used performance metrics. The attained results show same others. Also, highest time by produces orthogonality among signals transmitted different modems (PLMs) neither nor frequency domains, but rather domain. Meanwhile, although its yielded SINR values fair PLMs consisting system, slightly outperformed HS-OFDM code-division at some PLMs.