Design of Multidimensional Mappings for Iterative MIMO Detection with Minimized Bit Error Floor

Conference: TURBO - CODING - 2006 - 4th International Symposium on Turbo Codes & Related Topics; 6th International ITG-Conference on Source and Channel Coding
04/03/2006 - 04/07/2006 at Munich, Germany

Proceedings: TURBO - CODING - 2006

Pages: 6Language: englishTyp: PDF

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Muhammad, Nabil Sven; Speidel, Joachim (Institute of Telecommunications, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

We present multidimensional mapping (MdM) as a generalized way how to assign input bits to symbol vectors for spatial multiplexing multiple-input, multiple-output (MIMO) transmission with iterative detection. Design goal is to minimize bit error floor by means of EXIT chart and pairwise error probability under the assumption of perfect a priori knowledge at the demapper. We propose an effective description of MdM based on block code generator matrices. The presented MdMs achieve minimal error floor and turbo cliff positions close to capacity limit.