Title :
Channel Characterisation for an OFDM-MISO Train Communications System
Author :
Knörzer, Sandra ; Baldauf, Michael A. ; Fügen, Thomas ; Wiesbeck, Werner
Author_Institution :
Inst. fur Hochstfrequenztechnik und Elektronik, Karlsruhe Univ.
Abstract :
To design an OFDM train communications system it is essential to characterize and consider the channel parameters. For a high train scenario the transmission channel is frequency selective as well as time variant. Thus, delay spread and Doppler spread are investigated as crucial parameters for the OFDM system performance. Using a ray-tracing tool realistic impulse responses of the transmission channels are simulated. The investigated system includes three base stations operating in common frequency mode along a railway track and one mobile station situated on a high-speed train. Mobile station antennas with different patterns are included in the simulation model. The results are compared and assessed with respect to delay spread and Doppler spread
Keywords :
Doppler effect; OFDM modulation; delays; mobile radio; railway communication; ray tracing; spread spectrum communication; time-varying channels; transient response; Doppler spread; OFDM-MISO train communications system; base station; delay spread; high-speed train; impulse response; mobile station antenna; multiple input single output; orthogonal frequency division multiplexing; ray-tracing; time variant channel; transmission channel; Acoustical engineering; Base stations; Concrete; Delay; Intersymbol interference; Mobile antennas; OFDM; Poles and towers; Rail transportation; Ray tracing;
Conference_Titel :
ITS Telecommunications Proceedings, 2006 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-9587-5
Electronic_ISBN :
0-7803-9587-5
DOI :
10.1109/ITST.2006.288918
