Title :
Statistical characterization of the time-varying orthogonalized MIMO systems over non-isotropic Rayleigh fading channels
Author :
Drajic, Dusan B. ; Ivanis, Predrag N. ; Stojnic, Milena M.
Author_Institution :
Fac. of Electr. Eng., Univ. of Belgrade, Belgrade, Serbia
Abstract :
In this paper, we investigate the performances of time-varying multiple-input-multiple-output (MIMO) systems. In particular, we consider statistical properties of the output signal-to-noise ratio (SNR) for two classes of MIMO techniques - multichannel beamforming (MB) and orthogonal space-time block codes (OSTBC). The closed-form expressions for the probability density function (PDF) and the level crossing rate (LCR) of the output SNR are obtained for the arbitrary channel matrix dimensions for the case of Rayleigh propagation with non-isotropic scattering. Using the derived expressions, we find the parameters for a corresponding finite state Markov channel model that is used to determine the throughput and the residual packet error rate in time-varying MIMO system with hybrid automatic repeat-request (HARQ) procedures. Numerical simulations are provided to endorse our theoretical results.
Keywords :
MIMO communication; Rayleigh channels; array signal processing; automatic repeat request; space-time block codes; statistical analysis; time-varying channels; HARQ procedures; LCR; OSTBC; PDF; Rayleigh propagation; SNR; hybrid automatic repeat-request; level crossing rate; multichannel beamforming; multiple-input-multiple-output systems; non-isotropic Rayleigh fading channels; orthogonal space-time block codes; probability density function; signal-to-noise ratio; statistical characterization; time-varying orthogonalized MIMO systems; Array signal processing; Correlation; Eigenvalues and eigenfunctions; Fading; MIMO; Markov processes; Signal to noise ratio; Adaptive modulation; Markov models; Rayleigh fading; hybrid automatic repeat request procedures; multichannel beamforming; multiple-input multiple-output channels; space-time block codes; time-varying systems;
Conference_Titel :
Telecommunication in Modern Satellite Cable and Broadcasting Services (TELSIKS), 2011 10th International Conference on
Conference_Location :
Nis
Print_ISBN :
978-1-4577-2018-5
DOI :
10.1109/TELSKS.2011.6112022
