Title :
Reduction of power envelope fluctuations in ECMA-368 ultra wideband communication system
Author :
Louliej, Abdelhamid ; Jabrane, Younes ; Said, Brahim Ait Es ; Ouahman, Abdellah Ait
Author_Institution :
ETRI team, Cadi Ayyad Univ., Marrakech, Morocco
Abstract :
ECMA-368 is a recent standard, describing the UWB physical layer (PHY-UWB) for wireless personal area network (WPAN) by using the Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) approach. However, the large power envelope fluctuations of MB-OFDM UWB signal, limits the power efficiency of the High Power Amplifier (HPA) due to nonlinear distortion. In this paper, we will use the Active Constellation Extension Approximate Gradient-Project technique (ACE-AGP) to reduce the power envelope fluctuations in real ECMA-368 system, the efficiency of ACE-AGP is compared with partial transmit sequences (PTS) algorithm. Simulation results show that the reduction of CM by ACE-AGP is better (5dB) than PTS (3dB) and with less complexity, also the BER achieved by both methods does not undergo a significant degradation.
Keywords :
OFDM modulation; error statistics; nonlinear distortion; personal area networks; ultra wideband communication; ACE-AGP; BER; ECMA-368 ultra wideband communication system; HPA; MB-OFDM approach; PTS; UWB physical layer; WPAN; active constellation extension approximate gradient-project technique; high power amplifier; large power envelope fluctuation; multiband orthogonal frequency division multiplexing approach; nonlinear distortion; power efficiency; power envelope fluctuation reduction; wireless personal area network; Bit error rate; Constellation diagram; Laboratories; Measurement; Partial transmit sequences; Peak to average power ratio; ACE-AGP; CM BER; ECMA-368; MB-OFDM; PTS;
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2012 International Conference on
Conference_Location :
Tangier
Print_ISBN :
978-1-4673-1518-0
DOI :
10.1109/ICMCS.2012.6320132
