Modulation Classification for Adaptive Mobile OFDM Systems

Konferenz: OFDM 2014 - 18th International OFDM Workshop 2014 (InOWo'14)
27.08. - 28.08.2014 in Essen, Deutschland

Tagungsband: Proceedings of the 18th International OFDM Workshop 2014 (InOWo’14)

Seiten: 8Sprache: EnglischTyp: PDF

Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt

Husmann, Christopher; Chen, Yun (Fraunhofer Institute for Embeded Systems and Communication Technologies ESK, Hansastr. 32, 80686 Munich, Germany)

Adaptive modulation is an efficient approach to combat the effect of deep fades in orthogonal frequency division multiplexing (OFDM) systems with time-varying multipath channels. However, the receiver has to know the applied modulation scheme to perform the demodulation. Blind detection of the modulation scheme eliminates the need of a signaling overhead. In this contribution, a simplified maximum a priori based automatic modulation classification algorithm is analyzed. Simulations indicate that via efficient utilizations of boundary conditions and channel properties a good classification performance can already be achieved for a small number of observed symbols.