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Physical layer specification of the L-band Digital Aeronautical Communications System (L-DACS1)
(2009)
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.
Expeditious building of ring-porous earlywood vessel chronologies without loosing signal information
(2009)
Blended Shopping
(2009)
Many companies still conduct the worldwide management of people as if neither the external economic nor the internal structure of the firm had changed. The costs of cross-cultural failure, for individuals and their companies, are enormous: personal and family costs; financial, professional and emotional costs; costs to one’s career prospects, to one’s self-esteem, to one’s marriage and family. This scenario describes sufficiently the reason for learning “the art of crossing cultures” (Craig Storti). To this end, this research paper describes an innovative approach of cross-cultural training, following the didactical ideas of Kolb and Fry, the so-called 'experiential learning'.
Konvergenz von drahtlosen und drahtgebundenen Kommunikationstechnologien in der Gebäudeautomation
(2009)
Auswirkungen des Forderungsverzichtes – Steuerliche Belastung und Beeinflussung der Steuerquote
(2009)
Stahlbetonbau
(2009)
Stahlbau
(2009)
Geotechnik
(2009)
Siedlungswasserwirtschaft
(2009)
Abfallwirtschaft
(2009)