Detection method for digital radio mondiale plus in hybrid broadcasting mode

In this paper, we propose a detection method for Digital Radio Mondiale (DRM) Plus suitable for hybrid mode broadcasting of both DRM Plus and analog FM (Frequency Modulation) within the same frequency band. The guard-interval correlation method of Orthogonal Frequency Division Multiplexing (OFDM) is good for DRM Plus signal detection, but the false alarm possibility increases when FM signal is received. The proposed method includes a reference block in the guard-interval correlation which increases the identification rate of weak DRM Plus signals and decreases the false alarm possibility when analog FM is received. The performance of the proposed method is verified through simulations¹.