Bin H. Characterization and Emulation of Low-Voltage Power Line Channels...2016

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Bin H. Characterization and Emulation of Low-Voltage Power Line Channels...2016

Textbook in PDF format Realizing smart grid and smart home applications calls for reliable and cost-efficient communication systems. This demand has raised the recent interest in power line communication (PLC) technologies, and has driven a broad set of deep surveys in low-voltage (LV) power line channels. Generally, two main challenges are to overcome in this field: the channel characterization and the channel emulation. The first one helps to understand and describe the complex behavior of the channels, so that reliable PLC systems can be pertinently developed. The latter one supports a reproducible, flexible and rapid PLC system evaluation on the physical layer. This thesis proposes a set of novel approaches, to characterize and to emulate LV power line channels in the frequency range from 0.15 to 10 MHz, which closes gaps between the traditional narrowband (up to 500 kHz) and broadband (above 1.8 MHz) ranges. Measuring frameworks are designed to obtain the cyclostationary channel properties, including the channel transfer function (CTF) and the interference scenario. Existing models of CTF and noise are reviewed and extended to describe the channel behavior. According to the extended models, adaptive and robust estimators are implemented to parameterize the channel. Supported by the estimated parameters, an advanced FPGA-based high-speed channel emulator is implemented to reconstruct LV power line channels in real-time. Based on the proposed emulator, an LV PLC testbed is developed to support system evaluation for both narrowband and broadband applications