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EXIT chart-aided adaptive coding for MMSE turbo equalization with multilevel BICM

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4 Author(s)
S. Ibi ; Graduate Sch. of Eng., Osaka Univ., Japan ; T. Matsumoto ; S. Sampei ; N. Morinaga

This letter proposes adaptive coding (AC) for multilevel bit interleaved coded modulation (ML-BICM) with MMSE turbo equalization, of which aim is to minimize the information rate loss due to the mismatch between the channel realization and channel coding. With the aid of the knowledge about extrinsic information transfer (EXIT) characteristics at the receiver, the code parameters such as code rates and/or generator polynomials are adaptively selected independently in each the ML-BICM layer. Numerical results show that throughput efficiency can be significantly improved with the proposed AC technique over the automatic repeat request (ARQ) technique with fixed code rate

Published in:

IEEE Communications Letters  (Volume:10 ,  Issue: 6 )