Markus Schnell

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The MPEG-4 Low Delay Advanced Audio Coding (AAC-LD) scheme has recently evolved into a popular algorithm for audio communication. It produces excellent audio quality at bitrates between 64 kbit/s and 48 kbit/s per channel. This paper introduces an enhancement to AAC-LD which reduces the bitrate demand by 25-33%. This is achieved by adding both a(More)
B-VHF is a proposal for a future aeronautical communication system in the VHF band based on an overlay concept, i.e. during the transition phase the B-VHF system shares the same frequency band with legacy VHF systems without interfering with them. In this paper, the overlay concept is evaluated by simulations of the physical and higher layers. Simulation(More)
Textiles are omnipresent in our daily life. Their combination with microelectronics will lead to completely new applications realizing elements of ambient intelligence. In this paper, a textile-based large-area sensor network integrated into a carpet is presented: Based on a network of simple information processing elements with integrated sensors or(More)
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