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.
|Title of host publication||2012 IEEE Vehicular Technology Conference (VTC Fall)|
|Publication status||Published - 1 Jan 2012|
|Event||VTC 2012 - IEEE Vehicular Technology Conference - |
Duration: 1 Jan 2012 → …
|Conference||VTC 2012 - IEEE Vehicular Technology Conference|
|Period||1/01/12 → …|