This contribution provides insight into the performance of the currently deployed 3G cellular systems HSDPA and WiMAX. In extensive measurement campaigns we measured the physical layer throughput of these 3G systems in different environments (alpine and urban) and compare the results rigorously to their upper bounds derived from the well known Shannon capacity. By separating the observed losses into a channel state information loss, a design loss, and an implementation loss, we gain more insight into the performance of the different standards which in turn allows us to compare them better and to localize their shortcomings. In general, we find that implementations of the current standards still operate about 10 dB away from the Shannon bound. We finally consider 4G LTE systems with up to eight antennas and find that they are not considerably better with respect to bandwidth efficieny.
Markus Rupp received his Dipl.-Ing. degree in 1988 at the University of Saarbruecken, Germany and his Dr.-Ing. degree in 1993 at the Technische Universität Darmstadt, Germany, where he worked with Eberhard Hänsler on designing new algorithms for acoustical and electrical echo compensation.
From November 1993 until July 1995, he had a postdoctoral position at the University of Santa Barbara, California with Sanjit Mitra where he worked with Ali H. Sayed on a robustness description of adaptive filters with impact on neural networks and active noise control. From October 1995 until August 2001 he was a member of Technical Staff in the Wireless Technology Research Department of Bell-Labs at Crawford Hill, NJ, where he worked on various topics related to adaptive equalization and rapid implementation for IS-136, 802.11 and UMTS.
Since October 2001 he is a full professor for Digital Signal Processing in Mobile Communications at the Vienna University of Technology where he founded the Christian-Doppler Laboratory for Design Methodology of Signal Processing Algorithms in 2002 at the Institute for Communciations and RF Engineering. He served as Dean from 2005-2007.
He was associate editor of IEEE Transactions on Signal Processing from 2002-2005, is currently associate editor of JASP EURASIP Journal of Advances in Signal Processing, JES EURASIP Journal on Embedded Systems, Research Letters in Signal Processing. He is elected AdCom member of EURASIP since 2004 and serving as president of EURASIP from 2009-2010.
He authored and co-authored more than 300 papers and patents on adaptive filtering, wireless communications, and rapid prototyping, as well as automatic design methods.