MIMO HSDPA Testbed Measurements

Speaker: Dipl.-Ing. Christian MehlführerAbstract: In this presentation, throughput measurement results of High Speed Downlink Packet Access (HSDPA) are shown. After a short overview about HSDPA and the utilization of multiple antennas in this standard, the measurement methodology and measurement setups in alpine and urban environments are explained. In both environments, the 2x2 and 4x4 MIMO systems achieve more than twice and four times the throughput of the SISO system, respectively. Furthermore, the measured data throughput is compared to an "achievable" throughput that is closely related to channel capacity. This comparison reveals an SNR loss of 6-9 dB, leaving room for improvements.Biography: Christian Mehlführer was born in Vienna, Austria, in 1979. In 2004 he received his Dipl.-Ing. degree in electrical engineering from the Vienna University of Technology. Besides his diploma studies he worked part time at Siemens AG where he performed integration tests of GSM carrier units. After finishing his diploma thesis on implementation and real-time testing of space-time block codes, for which he received the Vodafone Förderpreis 2006 (together with Sebastian Caban), he now is member of the Christian Doppler Laboratory for Design Methodology of Signal Processing Algorithms and works towards his doctoral thesis at the same institute. His research interests include experimental investigation of MIMO systems, MIMO HSDPA (High Speed Downlink Packet Access), MIMO WiMAX (802.16), as well as the upcoming LTE (Long Term Evolution of UMTS) system.Host: Andreas Molisch, molisch@usc.edu, EEB 530, x04670

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos