Design and Implementation of a Correlation-based DSP Software for Narrowband Power Line Communication Receiver

A software correlation based detection method is designed for an FSK-profile modem for narrow-band communication over low-voltage power line networks. The correlator is designed to be suitable with a digitalization stage based on a simple comparator and to be simply realizable on a digital signal processor (DSP). Furthermore, the receiver calibration and its performances analysis in a white additive gaussian noise channel are performed. Finally, the defined receiver DSP implementation is developed and its experimental results are studied. It is concluded that the proposed solution provides good discrimination between carrier frequencies and sufficient immunity against channel noise and signal distortion.