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Iterative decoding of codes over complex numbers for impulsive noise channels

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2 Author(s)
Jurgen Haring ; Inst. for Exp. Math., Univ. of Essen, Germany ; A. J. H. Vinck

We discuss the decoding of error-correcting block codes over complex numbers for the transmission over impulsive noise channels. The encoder multiplies a vector of complex information symbols resulting from a modulation scheme, e.g., quadrature amplitude modulation (QAM), with a unitary generator matrix G. Choosing the inverse Fourier transform as G, the encoding procedure is similar to orthogonal frequency-division multiplex (OFDM) modulation. The maximum a posteriori (MAP) receiver is analyzed and a suboptimum decoder based on the turbo decoding principle is derived. Simulation results show the excellent performance of the iterative decoder.

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IEEE Transactions on Information Theory  (Volume:49 ,  Issue: 5 )