Dusan Drajic

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In this letter, exact closed form expressions for the level crossing rate and the autocorrelation function are derived for maximum-ratio-combining with independent but unbalanced diversity branches. The novel expressions are given for Rayleigh propagation and an arbitrary number of diversity branches. The derived identities can be applied to isotropic as(More)
In this paper, the second-order statistics of the signal to noise ratio (SNR) at the output of a multiple-inputmultiple-output (MIMO) system employing maximal ratio combining (MRC) are analyzed. Exact expressions for the level crossing rate (LCR) and the average fade duration (AFD) are derived for the Rayleigh propagation and arbitrary channel matrix(More)
The second-order statistics of the time varying signal to noise ratio at the output of a multiple-input-multiple-output (MIMO) system with maximal ratio combining (MRC) are analyzed. Exact closed-form expressions for the level crossing rate and the average fade duration are derived for the Ricean propagation and arbitrary channel matrix dimensions. Novel(More)
In this paper, the exact closed-form expressions for the level crossing rate (LCR) and the temporal autocorrelation function (ACF) of the signal-to-noise ratio (SNR), at the output of the spatially correlated multiple-input-multiple-output (MIMO) systems with orthogonal space-time block codes (OSTBCs), are derived. The expressions are derived for the case(More)
In this study, exact closed-form expressions for the second-order statistics of the signal-to-noise ratio at a maximum ratio combiner (MRC) output for a Nakagami fading channel are derived. Using the joint characteristic function for the MRC output and its time derivative, the level crossing rate, average fading duration and autocorrelation function(More)
Keywords: Automatic repeat request Beamforming Bit error rate Markov model Multiple-input multiple-output systems Packet error structure Singular value decomposition a b s t r a c t Using a finite state Markov channel model, we develop an analytical method for evaluation of the packet error structure in multiple-input multiple-output (MIMO) systems based on(More)
Indroduction The asymptotic optimal quantization problem, even for the simplest case-uniform scalar quantization, is very actual nowadays, [1]. The importance of using the rectangular cells and the optimal density (number) of points for product quantization and Gaussian source is considered in [2-3]. In [4] the granular gain (due to cell shape, being 1.53(More)