TY - CONF AU - Engels, Gregor ID - 7822 T2 - Tagungsband GI-Fachtagung "Interaktive Schnittstellen für Informationssysteme", TU Clausthal, Notizen zu Interaktive Systeme TI - CADDY-O: Syntaxgestütztes, graphisches Entwerfen konzeptioneller Datenbankschemata VL - 18 ER - TY - CONF AU - Engels, Gregor AU - Hohenstein, Uwe AU - Hülsmann, Klaus AU - Löhr-Richter, Perdita AU - Ehrich, Hans-Dietrich ID - 7823 T2 - Proceedings of the International Conference on System Development Environments & Factories, Berlin, Germany TI - CADDY: Computer-Aided Design of Non-Standard Databases ER - TY - GEN AU - Engels, Gregor ID - 8187 TI - Benutzerschnittstelle und Architektur der integrierten Datenbankentwurfsumgebung CADDY (Kurzfassung) ER - TY - BOOK AU - Engels, Gregor AU - Schäfer, Wilhelm ID - 7511 TI - Programmentwicklungsumgebungen: Konzepte und Realisierung ER - TY - JOUR AU - Dellnitz, Michael AU - Werner, Bodo ID - 16682 JF - Journal of Computational and Applied Mathematics SN - 0377-0427 TI - Computational methods for bifurcation problems with symmetries—with special attention to steady state and Hopf bifurcation points ER - TY - JOUR AU - Just, Bettina AU - Meyer auf der Heide, Friedhelm AU - Wigderson, Avi ID - 16743 JF - RAIRO - Theoretical Informatics and Applications SN - 0988-3754 TI - On computations with integer division ER - TY - CONF AU - Dietzfelbinger, M. AU - Meyer auf der Heide, Friedhelm ID - 16744 SN - 089791323X T2 - Proceedings of the first annual ACM symposium on Parallel algorithms and architectures - SPAA '89 TI - An optimal parallel dictionary ER - TY - CHAP AU - Meyer auf der Heide, Friedhelm ID - 16745 SN - 3540508406 T2 - STACS 89 TI - On genuinely time bounded computations ER - TY - CHAP AU - Meyer auf der Heide, Friedhelm AU - Wanka, Rolf ID - 16746 SN - 3540508406 T2 - STACS 89 TI - Time-optimal simulations of networks by universal parallel computers ER - TY - CHAP AU - Meyer auf der Heide, Friedhelm ID - 16789 SN - 0302-9743 T2 - STACS 89 TI - Computing minimum spanning forests on 1- and 2-dimensional processor arrays ER - TY - JOUR AU - Fuchssteiner, Benno AU - Oevel, Gudrun ID - 17162 IS - 1 JF - Rev. Math. Phys. TI - Geometry and Action-Angle Variables of Multi Soliton Systems ER - TY - JOUR AB - The problem of optimal carrier recovery and detection of digitally phase modulated signals on fading channels by using a nonstructured approach is presented, i.e. no constraint is placed on the receiver structure. First, the optimal receiver is derived for digitally phase-modulated signals when transmitted over a frequency-nonselective fading channel with memory. The memory results from the fact that usually the coherence time of the channel is larger than the symbol period. Symbols adjacent in time cannot be detected independently and therefore the well-known quadratic receiver is not optimal in this case. A maximum a posteriori (MAP) detector is derived and explicitly utilizes the channel memory for carrier recovery. The derivation shows that the optimal carrier recovery is, under certain conditions, a Kalman filter. Some attractive properties of this carrier recovery unit (including the absence of hang up) are discussed. Then the error rate of several digital modulation schemes is calculated taking the performance of the filter into account. The differences in susceptibility of the modulation schemes to carrier phase jitter are specified. AU - Haeb-Umbach, Reinhold AU - Meyr, Heinrich ID - 11793 JF - IEEE Transactions on Communications TI - A systematic approach to carrier recovery and detection of digitally phase modulated signals on fading channels ER - TY - CONF AU - Peckhaus, Volker ED - Krafft, Fritz ED - Scriba, Christoph J. ID - 17821 T2 - XVIIIth International Congress of History of Science. General Theme: Science and Political Order. Wissenschaft und Staat. 1st — 9th August 1989 Hamburg — München. Abstracts TI - Die Institutionalisierung der Mathematischen Logik in Deutschland VL - E1.4 ER - TY - CONF AU - Wunderlich, Hans-Joachim AU - Hellebrand, Sybille ID - 13020 T2 - IEEE International Test Conference (ITC'89) TI - The Pseudo-Exhaustive Test of Sequential Circuits ER - TY - BOOK ED - Tophinke, Doris ID - 18464 TI - Plattdeutsch - ein Pflegefall? ER - TY - JOUR AU - Noé, Reinhold AU - RODLER, H AU - EBBERG, A AU - GAUKEL, G AU - AURACHER, F ID - 38494 IS - 4 JF - FIBER AND INTEGRATED OPTICS SN - 0146-8030 TI - PATTERN-INDEPENDENT FSK HETERODYNE TRANSMISSION WITH ENDLESS POLARIZATION CONTROL AND A 119 PHOTOELECTRONS BIT RECEIVER SENSITIVITY VL - 8 ER - TY - JOUR AU - Noé, Reinhold AU - GIMLETT, JL AU - VODHANEL, RS AU - TSUJI, S ID - 38347 IS - 1 JF - ELECTRONICS LETTERS SN - 0013-5194 TI - POLARIZATION-INSENSITIVE, 500 MBIT/S FSK TRANSMISSION OVER 153KM BY PASSIVE POLARIZATION SWITCHING VL - 25 ER - TY - JOUR AU - Noé, Reinhold AU - GIMLETT, JL AU - VODHANEL, RS AU - TSUJI, S ID - 38297 IS - 1 JF - ELECTRONICS LETTERS SN - 0013-5194 TI - POLARIZATION-INSENSITIVE, 500 MBIT/S FSK TRANSMISSION OVER 153KM BY PASSIVE POLARIZATION SWITCHING VL - 25 ER - TY - CONF AU - Rammig, Franz Josef AU - Müller, Wolfgang ID - 39585 T2 - Proc. of the Ninth IFIP Symposium on CHDLs and their Application TI - ODICE: Object-Oriented Hardware Description in CAD Environment ER - TY - JOUR AU - Heppke, G. AU - Jéròme, B. AU - Kitzerow, Heinz-Siegfried AU - Pieranski, P. ID - 40069 IS - 3 JF - Liquid Crystals KW - Condensed Matter Physics KW - General Materials Science KW - General Chemistry SN - 0267-8292 TI - Observation of a hexagonal blue phase in systems with negative dielectric anisotropy VL - 5 ER -