ABSTRACT
The emulation of narrowband noise covers noise types with sinusoidal waveform. According to Bausch et al., this kind of noise has a bandwidth of several kHz. The amplitude level is greater than that of background noise. The scaling unit determines the maximum amplitude of the noise. A switch is inserted between the noise source and the scaling unit. High-frequency noise coming from the uninterruptible power supply (UPS) can also be filtered by the line impedance stabilisation networks (LISNs). The coupling circuits (CCs) are necessary to separate the emulator from the high-voltage side and to exchange the 'pure' communication signals between the emulator and the device under test (DUT). Due to the capability of reproducing real-world channel characteristics, narrow band-power line communication (NB-PLC) systems can be evaluated in laboratorial conditions using the proposed test platform. Traditional equipment and approaches make the test of NB-PLC systems quite challenging.
