Adaptive Modulation and Interleaving for BICM-OFDM

Authors: C. Bockelmann, K.-D. Kammeyer
Abstract: The optimisation of communication systems with respect to the applied channel code is a more recent topic in the field of adaptive communications compared to the optimisation of uncoded transmissions. Besides the information theoretical statements the applied codes are not perfect but practical codes which poses the additional problem to capture the structure and overall behaviour of a code sufficiently. Intelligent interleaver design has been proposed to enhance the performance of convolutional codes, but adaptive modulation approaches using the mutual information of Bit Interleaved Coded Modulation (BICM) systems as a figure of merit seem well suited to enhance the error rate, too. To this end, we propose a new loading algorithm and compare its performance to the interleaver approach [1] and a combination of both for several system configurations.
Document type: Conference Paper
Publication: Hamburg, Germany, 27. - 28. August 2008
Conference: 13th International OFDM-Workshop 2008 (InOWo 08)
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