On EXIT-charts for Space-Time Block Codes

Authors: A. Sezgin, D. Wübben, R. Böhnke, V. Kühn
Abstract: In this work, we consider the application of the well-known space-time block code (STBC), the Alamouti-scheme, as inner code within a "turbo" coding scheme for the multiple-input-multiple-output (MIMO) Rayleigh fading channel. We analyze therefore the applicability of the Alamouti-scheme for iterative space-time detection and decoding applied at the receiver. To this end, we use extrinsic information transfer characteristics (EXIT-charts) in order to predict the performance of the Alamouti-scheme. Furthermore, we analyze the impact of different mapping strategies on the information transfer of the soft-input-soft-output (SISO) space-time detector and show analytically that it is possible to improve the performance by employing other mapping schemes than Gray mapping.
Document type: Conference Paper
Publication: Yokohama, Japan, 29. June - 4. July 2003
Conference: IEEE International Symposium on Information Theory (ISIT 2003)
Index: 207
ISIT_2003_sezgin.pdf139 KB
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