MIMO (Multiple Input Multiple Output) is a radio technique that satisfies growing data rate needs. To evaluate the benefits and drawbacks of MIMO radio using different antennas in an aircraft environment, an experimental MIMO system is applied in such an environment with two different antenna types. On the one hand omnidirectional antennas, on the other hand leaky coaxial cables are used. MIMO transmissions are conducted in the cabin of the aircraft and the results are presented. The estimated impulse and frequency responses are discussed. Channel capacities are determined. Impulse and frequency responses are measured using a MIMO OFDM scheme, which is reviewed. The MIMO configuration with four omnidirectional receive antennas and three omnidirectional transmit antennas outperforms the other configurations. Several transmissions with an experimental MIMO radio system in an aircraft environment are described. Omnidirectional transmit antennas are used in a 3 x 4 and a 4 x 4 configuration. Leaky line transmit antennas are used in a 2 x 4 configuration. In all setups four omnidirectional antennas were used as receive antennas. The measurement results show that the 3 x 4 MIMO with omnidirectional antennas outperforms the other configurations, rendering a MIMO concept applying several clusters of three omnidirectional transmit antennas along the aisle a more promising concept then MIMO with leaky lines.
MIMO wireless communication in an aircraft using omnidirectional and leaky line antennas
MIMO - drahtlose Kommunikation in einem Flugzeug mit Hilfe von Rundstrahl- und Leckkoaxialkabelantennen
2009
10 Seiten, 8 Bilder, 13 Tabellen, 10 Quellen
Conference paper
English
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