Albert Mráz

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The performance of downlink multiuser MIMO OFDM transmission is investigated at the physical layer of 3GPP–LTE. Three different types of channel estimation imperfections are presented. Performance degradations caused by this imperfect channel estimation at the receiver are simulated and analyzed by means of uncoded bit error ratio as function of signal to(More)
This work provides an exact analytical method for the calculation of the bit error rate for MIMO-ZF transmission, assuming arbitrary M level Quadrature Amplitude Modulation, to substitute the existing approximating solutions in the literature in the presence of Additive White Gaussian Noise. The authors have extended the calculations with a 3GPP LTE(More)
—This work aims the investigation of radio link performance of the 3GPP LTE in terms of the bit-and block error rate, assuming different error models for the feedback of the channel state information and the precoding matrix indicator. For the former, the imperfect knowledge of the radio channel is assumed within the receiver according to a Gaussian error(More)
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