Analysis of mapping strategies for turbo-coded space-time block codes

Authors: A. Sezgin, D. Wübben, V. Kühn
Abstract: We propose a "turbo" coding scheme for the multiple-input-multiple-output (MIMO) Rayleigh fading channel consisting of the serially concatenation of a block code as the outer code and different orthogonal space-time block codes (STBC) for more than two transmit antennas as the inner code. Here, we consider the orthogonal STBC as a mapping scheme in space and time. At the receiver, we apply iterative space-time detection and decoding. We analyze the impact of different mapping strategies on the information transfer of the soft-input-soft-output (SISO) space-time detector. Moreover, we analytically show that additional performance gains over Gray mapping can be obtained by different mapping strategies. Furthermore, we use extrinsic information transfer characteristics (EXIT-charts) in order to predict the performance and the behavior of the system.
Document type: Conference Paper
Publication: "La Sorbonne", Paris, France, 30. March - 4. April 2003
Conference: IEEE Information Theory Workshop (ITW 2003)
Index: 206
ITW_2003_wuebben.pdf140 KBITW_2003_wuebben.ps267 KB
Last change on 15.05.2008 by
AIT ieee GOC tzi ith Fachbereich 1
© Department of Communications Engineering - University of BremenImprint / Contact