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A recently proposed non-parameteric maximum likelihood (NPML) channel estimator shows superior performance to the least square (LS) estimator in presence of non-Gaussian noise. The derivation of the NPML estimator assumed perfect knowledge of the channel order, which, however, does not comply with most applications. In this paper, first we study the effects of the inaccurate order assumption on the...
A practical orthogonal frequency-division multiplexing (OFDM) system can generally be modelled by the Hammerstein system that includes the nonlinear distortion effects of the high power amplifier (HPA) at transmitter. In this contribution, we advocate a novel nonlinear equalization scheme for OFDM Hammerstein systems. We model the nonlinear HPA, which represents the static nonlinearity of the OFDM...
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