Susanne Godtmann

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A method for the prediction of bit-error rates (BER) of bit-interleaved coded modulation systems with iterative decoding (BICM-ID) is presented, which is based solely upon the extrinsic information transfer (EXIT) chart and avoids extensive BER simulations. Comparisons show an accurate prediction, even for low BERs down to 10−6. Furthermore, an easy(More)
Bit-interleaved coded modulation with iterative decoding (BICM-ID) is a transmission scheme with excellent performance on fading channels. The mapping of the bit patterns to the elements of the signal constellation set (SCS) is the key design element of BICM-ID, especially regarding the asymptotic performance of the BER. In this paper we will demonstrate(More)
In this paper, we examine turbo synchronization in the presence of carrier frequency uncertainties and phase offsets for the DVB–RCS standard. As turbo synchronization can only achieve high estimation accuracy if the initial parameter offset is sufficiently small, we employ a coarse synchronization unit for pre-compensation. Especially for frequency offset(More)
In this paper, we examine code-aided synchronization in the presence of carrier frequency uncertainties and phase noise. As code-aided synchronization can only achieve high estimation accuracy if the initial parameter offset is sufficiently small, we employ a data-aided coarse synchronization unit comprising a feed-forward frequency estimator and a LMMSE(More)
In this paper, we derive the asymptotic bit error rate (BER) for multiple-input multiple-output bit-interleaved coded modulation (MIMO-BICM) with linear zero-forcing (ZF) receivers for a temporally correlated flat Rayleigh fading channel. Pilot symbol assisted modulation (PSAM) in combination with linear minimum mean-squared error (LMMSE) channel estimation(More)
When realizing carrier frequency offset estimation at low signal-to-noise ratios, a typical feed-forward synchronization unit solely relies on known pilot symbols. The importance of the position of these pilot symbols within the burst has been elaborated on in the literature. In this paper, we discuss the importance of the pilot symbol constellation for(More)
A cost function for the optimization of mappings for bit-interleaved coded modulation systems with iterative decoding (BICM-ID) for a Rayleigh channel with applied IQ interleaving is derived. For this channel model the optimum mapping depends on the channel quality and on the rotation of the signal constellation set. Simulation results reveal that mappings(More)
In this correspondence, we analytically derive the bit error rate (BER) for bit-interleaved coded modulation (BICM) under the assumption of a temporally correlated flat Rayleigh fading channel. We assume the channel state information (CSI) to be unknown at receiver side and consider a linear minimum mean-squared error (LMMSE) channel estimator that relies(More)
In this paper, we consider data-aided carrier frequency estimation for burst mode transmission in low signal-tonoise ratio (SNR) environments. It is well known from literature that it is advantageous for the accuracy of data-aided carrier frequency estimation to choose separate packets of pilot symbols as pilot constellation. We here introduce a new concept(More)