Iterative decoding of codes over complex numbers for impulsive noise channels

Authors:
Jurgen Haring;A. J.H. Vinck
Affiliations:
Inst. for Exp. Math., Univ. of Essen, Germany;-
Venue:
IEEE Transactions on Information Theory
Year:
2006

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Abstract

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.