Lars Reichardt

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—We present a software radio-based testbed for live testing of OFDM radar algorithms. Unlike previous testing setups, the hardware used (Universal Software Radio Peripherals) was low-cost and low-power, thus making the measurement setup both flexible and easy to use. The hardware can be easily battery powered. Both stationary and mobile measurements in(More)
This paper evaluates single and multiple antenna systems in realistic car-to-car communication channels. With a three-dimensional ray-tracing simulation tool the narrow-band channel characteristics are determined for various antenna positions and numbers of antennas. The results clearly show the advantage of multiple antenna systems. Suitable antenna(More)
Mobile communications is usually understood as phoning while moving, with the link via a base station. The success of mobile communications stimulated the idea of direct mobile to mobile communications in and with vehicles. In the last few years regulation authorities made the necessary spectrum in the 5.9 GHz frequency range available and set up(More)
In the OFDM signalling concept, the wide-band radio-communication channel is effectively utilized as a collection of narrow-band channels. Basic system parameters like the number of subcarriers N and symbol duration T are selected to mitigate the key channel impairments: Inter-Symbol-Interference (ISI) induced by frequency selectivity and loss of subcarrier(More)
Future mobile communications, in the mean of Car-to-Car (C2C), Car-to-Infrastructure (C2I) or Vehicle-to-Vehicle (V2V) communication, will make use of multiple antenna systems like diversity or MIMO. Especially in multiple antenna systems finding the optimal antenna configuration in order to ensure the best performance is a very difficult task. Presently(More)
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