Refine
Year of publication
- 2024 (14)
- 2023 (29)
- 2022 (19)
- 2021 (27)
- 2020 (29)
- 2019 (44)
- 2018 (44)
- 2017 (37)
- 2016 (35)
- 2015 (36)
- 2014 (43)
- 2013 (43)
- 2012 (41)
- 2011 (40)
- 2010 (36)
- 2009 (38)
- 2008 (41)
- 2007 (39)
- 2006 (27)
- 2005 (25)
- 2004 (35)
- 2003 (33)
- 2002 (29)
- 2001 (33)
- 2000 (34)
- 1999 (31)
- 1998 (28)
- 1997 (34)
- 1996 (25)
- 1995 (22)
- 1994 (21)
- 1993 (18)
- 1992 (13)
- 1991 (14)
- 1990 (9)
- 1989 (17)
- 1988 (11)
- 1987 (8)
- 1986 (9)
- 1985 (9)
- 1984 (3)
- 1983 (7)
- 1982 (4)
- 1981 (3)
- 1980 (12)
- 1979 (6)
- 1978 (7)
- 1977 (1)
- 1976 (7)
- 1975 (3)
- 1974 (4)
- 1973 (1)
- 1972 (3)
- 1971 (2)
- 1970 (1)
Institute
- Fachbereich Elektrotechnik und Informationstechnik (1184) (remove)
Language
- English (719)
- German (464)
- Multiple languages (1)
Document Type
- Article (637)
- Conference Proceeding (302)
- Book (114)
- Part of a Book (64)
- Patent (17)
- Report (9)
- Other (8)
- Conference: Meeting Abstract (6)
- Contribution to a Periodical (6)
- Course Material (6)
Keywords
- Multimediamarkt (7)
- Enterprise Architecture (5)
- MINLP (5)
- Engineering optimization (4)
- Gamification (4)
- Serious Game (4)
- Auslenkung (3)
- Digitale Transformation (3)
- Digitalisierung (3)
- Education (3)
In this paper, the multicarrier physical layers of WiMAX are evaluated in the context of airport data links. The orthogonal frequency-division multiplexing (OFDM) and orthogonal frequency-division multiple-access (OFDMA) cases are applied to the forward link (FL) and reverse link (RL), respectively. The performance of the so called parking and taxi scenarios is presented for airport communications in C-band. Numerical results show that the proposed scheme brings good performance for both the FL and the RL. For the OFDMA case a structure changing called double-tile is also proposed to improve the system performance.
The conference center darmstadtium in Darmstadt is a prominent example of energy efficient buildings. Its heating system consists of different source and consumer circuits connected by a Zortström reservoir. Our goal was to reduce the energy costs of the system as much as possible. Therefore, we analyzed its supply circuits. The first step towards optimization is a complete examination of the system: 1) Compilation of an object list for the system, 2) collection of the characteristic curves of the components, and 3) measurement of the load profiles of the heat and volume-flow demand. Instead of modifying the system manually and testing the solution by simulation, the second step was the creation of a global optimization program. The objective was to minimize the total energy costs for one year. We compare two different topologies and show opportunities for significant savings.