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On Channel Estimation for BICM-OFDM with Iterative Decoding and Optimized Symbol Mappings

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2 Author(s)
Jerome Bonnet ; DoCoMo Euro-Labs, Landsbergerstr. 312, 80687 München, Germany ; Gunther Auer

In this paper, we investigate the impact of channel estimation on the performance of bit-interleaved coded modulation (BICM-OFDM) systems with iterative decoding. Pilot-aided and iterative channel estimation techniques are evaluated with Gray labeling and symbol mappings optimized for iterative decoding by means of numerical simulations. We show that after several turbo iterations, pilot-aided channel estimation provides the best performance in terms of bit error rate (BER) while the iterative estimation approach achieves a better frame error rate (FER) performance.

Published in:

Turbo Codes&Related Topics; 6th International ITG-Conference on Source and Channel Coding (TURBOCODING), 2006 4th International Symposium on

Date of Conference:

3-7 April 2006