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2014
Conference Paper
Titel
Modulation classification for adaptive mobile OFDM systems
Abstract
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.
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