Suchergebnisse - "ML and EM algorithms"

EM-Based Joint Channel Estimation and IQ Imbalances for OFDM Systems von Marey, M., Samir, M., Dobre, O. A.

“… The imbalances between the In-phase (I) and Quadrature-phase (Q) branches represent a significant source of impairment in the orthogonal frequency division …”
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A novel IQ imbalance and channel estimation algorithm for Alamouti OFDM systems von Marey, Mohamed, Samir, Moataz Shoukry, Ahmed, Mohamed Hossam, El-Shenawy, Hamed, Elhennawy, Adel

“… This paper shows that the unwanted In-phase/quadrature (IQ) imbalance can be exploited to achieve a diversity gain for Alamouti space-time coding orthogonal …”
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Classification of PolSAR data with the Complex Riesz distribution von Kammoun, Rayhan, Kessentini, Sameh, Zine, Raoudha

“… This article deals with unsupervised classification strategies applied to polarimetric synthetic aperture radar (PolSAR) images. We discuss the performance of …”
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ML and EM algorithm for non-data-aided SNR estimation of linearly modulated signals von Gappmair, W., Lopez-Valcarce, R., Mosquera, C.

“… The recently published Cramer-Rao lower bound for non-data-aided (NDA) estimation of the signal-to-noise ratio (SNR) reveals a considerable gap, when compared …”
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