Dipl.-Ing. Dipl.-Kfm. Christian Hoymann Research Assistant RWTH Aachen Chair of Communication Networks Prof. Dr.-Ing. B. Walke Kopernikusstraße 16 (W.209) D-52074 Aachen Phone: +49 (0)241 80279 54 Fax: +49 (0)241 8890387

private Büchel 53 D-52062 Aachen Phone: +49 (0)241 5154666 Mobile: +49 (0)163 6935154

Projects

• European Research Projects:
• Flexible Relay Wireless OFDM-based Networks (IST-FIREWORKS): Specific Targeted Research Project (STREP) within Sixth Framework Programme
• Spectrally Efficient Fixed Wireless Network based on Dual Standards (IST-STRIKE)
: Project within Fifth Framework Programme
• National Research Projects:
• Deutsche Forschungsgemeinschaft (DFG) Schwerpunktprogramm Take OFDM, joint project with Institut für Hochfrequenztechnik (IHF)
• Industrial Research Projects:
• Joint projects with Vodafone

Research Interests

• Wireless Metropolitan Area Networks (WMAN) (WiMAX, IEEE 802.16 and HiperMAN)
• Optimization of mobile wireless systems, especially under consideration of
• smart antenna arrays to support Space Division Multiple Access (SDMA), and
• relaying technologies to allow Mesh deployments
• Wireless Local Area Networks (WLAN) (IEEE 802.11 & HiperLAN/2)
• Dimensioning of GSM/GPRS networks
• Internet and Multimedia Traffic Modelling (WWW, E-mail, WAP, MMS, FTP, Video- and Audio streaming, VoIP)
• Software Engineering Using Formal Specification Methods (Specification and Description Language SDL)
• Stochastic Simulation Methods for Performance Analysis of Real-Time Systems

Teaching

• Tutorial lecturer: "WiMAX - Wireless metropolitan Area Networks"
  WiMAX tutorial held at international conferences and as commercial off-the-job training
• Exercise lecturer: Communication Networks and Traffic Theory I
• Exam organisation: Communication Networks and Traffic Theory I+II
• Practical course: Mobile Radio Networks: Dimensioning of GSM/GPRS Networks
• Supervision of Master's Theses and Student Projects

Publications

Support and Supervision of Diploma / Master Thesis, Seminar Paper and Student Worker

Open Diploma / Master thesis / Studienarbeit / HiWi-Job