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

Files:

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