Abstract
The benefits of MA-signaling schemes need the fading radio channel tracking in the OFDM wireless systems. Here, we discuss about the errors in the channel identified based on time domain statistics. These estimations are based on fading models (slow and fast fading), we give the LS & MMSE estimators. It provides the tradeoff between the complexity and the performances. A sixteen QAM system symbol error rate is given by simulated results. Based upon estimators complexity, MMSE gives 4 dB SNR over the LSE.
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