Person: ACAR, YUSUF
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Dr. Öğr. Üyesi
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ACAR
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YUSUF
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Publication Metadata only Performance Improvement for Correlated 4x4 MIMO-OFDM Systems by Generalized Prefix Approach(IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013) Cooklev, Todor; Doğan, Hakan; Yıldız, Hakan; ACAR, YUSUF; 237377; 41066; 253657Antenna correlation limits the multiplexing gain achieved by practical MIMO-OFDM systems and degrades the performance significantly. Recently, investigations are focused to reduce the antenna correlation by the designing new antenna structures. Differently, in this paper, we propose the generalized prefix approach to solve problem for correlated MIMO-OFDM system. It is shown that the proposed generalized prefix for 4x4 MIMO-OFDM exhibits a gain of about 8 dB over the conventional 4x4 MIMO-OFDM system at BER = 10(-4)Publication Metadata only Generalized Prefix Approach for Alamouti Coded OFDM Systems over Gaussian Channels Correlated in Space(IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014) Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan; ACAR, YUSUF; 237377; 253657; 41066In this ivorkt, generalized frelix (GP) lbr space time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems is considered in the presence of correlated channel. The 2x2 STBC case, in practice, lead to significant correlation among the spatial signatures and reduce the systems performance. There are several structures to reduce correlation. To solve this problem, we propose the generalized prefix that has low computational complexity. It is shown that the proposed generalized prefix thr 2x2 STBC-OFDNI outperforms the conventional 2:c2 STBC-OFDNI system.