UP Paper 1866 US-W-KDOWN
Performance Comparison Between MB-OFDM and DS-UWB in Interfered Multipath Channels
Hämäläinen,MattiCentre for Wireless Communications
Viittala,HarriCentre for Wireless Communications
Iinatti,JariCentre for Wireless Communications
Performances of multiband orthogonal frequency division multiplexing (MB-OFDM) and direct sequence based ultra wideband (DS-UWB) systems are studied in interfered multipath channel. The radio channel is based on modified Saleh-Valenzuela model. The studies related to the com-parison between MB-OFDM and DS-UWB in interfering environments seems to be unsubstantial in the literature. Therefore, it is crucial to fill this gap. We focus more on coded MB-OFDM systems, whereas uncoded DS-UWB is applied as a point of comparison. Simulation assumptions are the same spectral allocation between these two systems and no interference mitigation techniques are applied. Simulation results showed that MB-OFDM system is more sensitive to interference than the corresponding DS-UWB. Uncoded DS-UWB, which is therefore also simpler ap-proach, can give similar performance than coded MB-OFDM in several interfered cases.
Matti Hämäläinen was born on January 1967 in Sodankylä, northern Finland. He joined Telecommunication Laboratory, University of Oulu, Finland in 1993, and received his Master of Science, Licentiate of Technology and Doctoral degrees in Electrical Engineering in 1994, 2002 and 2006, respectively. Since 1999, he has been with Centre for Wireless Communications, at the University of Oulu as a researcher and a project manager in several ultra wideband basic research related projects. Before that, his research was focused on wideband radio channel measurements and modeling. His research interests cover wideband and ultra wideband radio channel modeling, spread spectrum communications, and ultra wideband systems. His latest interests have been in UWB coexistence studies. He has been a technical program committee member of several UWB conferences, a co-editor in a book published by Wiley and a co-writer of one chapter in a book published by Hindawi Publishing Corp. He has more than 40 published conference and journal papers.