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Iterative frequency domain equalization for single carrier signals with magnitude modulation techniques
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Ano (publicação definitiva)
2012
Língua
Inglês
País
Canadá
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Abstract/Resumo
In this paper we consider broadband wireless systems with high power efficiency. For this purpose we employ MM (Magnitude Modulation) techniques to reduce the PAPR (Peak-to-Average Power Ratio) of the transmitted signals, allowing efficient power amplification. Designed transceivers combine MM with SC-FDE (Single-Carrier with Frequency-Domain Equalization) methods upon iterative-block decision feedback equalization (IB-DFE). Since IB-DFE schemes designed for conventional SC signals are not suitable when we employ PAPR-reduction techniques, the effect of MM is taken into account on the estimation reliability factor that drives IB-DFE convergence. Results for the new proposed MM- IBDFE transceiver present gains above 1.5dB in the overall power efficiency, even when considering severely time-dispersive channels
Agradecimentos/Acknowledgements
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Palavras-chave
IB-DFE,Magnitude modulation,PAPR