Experimental evaluation of the WiMAX downlink physical layer in high-mobility scenarios
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Experimental evaluation of the WiMAX downlink physical layer in high-mobility scenariosFecha
2015Cita bibliográfica
Suárez-Casal, P., Rodríguez-Piñeiro, J., García-Naya, J.A. et al. Experimental evaluation of the WiMAX downlink physical layer in high-mobility scenarios. J Wireless Com Network 2015, 109 (2015). https://doi.org/10.1186/s13638-015-0339-9
Resumen
[Abstract]: The experimental evaluation of the WiMAX downlink physical layer in high-mobility scenarios is extremely difficult to carry out because it requires the realization of measurement campaigns with expensive fast-moving vehicles. In this work, however, we succeeded in doing such an experimental evaluation with a low-mobility vehicle. The key idea is the enlargement of the symbol period prior to its transmission over the air. Such enlargement reduces the frequency spacing between the orthogonal frequency division multiplexing (OFDM) subcarriers in WiMAX transmissions and hence induces significant inter-carrier interference (ICI) on the received signals. The performance impact of such ICI in terms of error vector magnitude (EVM) and throughput is analyzed under different conditions like the use of multiple antennas, the placement of the receive antennas, or the accuracy of the channel information to adapt the transmission rate.
Palabras clave
ICI
High-speed
WiMAX
MIMO
High-speed
WiMAX
MIMO
Versión del editor
Derechos
Atribución 4.0 Internacional
ISSN
1687-1499
1687-1472
1687-1472