Single Carrier Interference Cancellation for Digital Radio Mondiale (DRM)

We consider cancellation of a single carrier interferer for the digital radio mondiale (DRM) system. The interferer is fully described by its frequency, amplitude, and phase. These parameters can be estimated in a maximum-likelihood sense using the pilot symbols in the orthogonal frequency division multiplexing (OFDM) signal. Subsequently, the interference may be reconstructed and subtracted from the received signal. Alternatively, the knowledge of the interferer frequency may be exploited for the design of a notch filter, nulling out the interference. Results show that the reconstruction and substraction method outperforms the notch filtering approach only if an accurate estimate of the interferer frequency is available. Otherwise, notch filtering has better performance