Performance of MIMO VBLAST-OFDM in Ka-Band
Technological advances have allowed the use of Ka-band for transmission in 30 GHz uplink and 20 GHz at downlink. The use of Ka-band has advantages over lower frequency bands; it allows a wider bandwidth and therefore a greater flow to pass. In addition, multibeams technology allows a wide reuse frequency, thereby reducing significantly the cost of the spectrum. In this Ka-band (20-30 GHz), quality of service can be degraded by the effects of effects of propagation through the atmosphere. We have proposed in this paper the MIMO OFDM-VBLAST technique for Ka-band application to improve performance. The simulation is based on the study of effect of the channel attenuation (rain and gas) in the Ka-band signal. The simulation results show the importance of using our proposal, where performance is determined in terms of bit error rate BER.
Keywords: MIMO Systems, Ka band, OFDM Modulation, Satellite Transmission.
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ABOUT THE AUTHORS
Souhila Ferouani
PhD Student in telecommunication at tlemcen university-algeria
G. Abdellaoui
PhD Student in telecommunication at tlemcen university-algeria
F. Debbat
Professor in Mascara University-Algeria
F. T. Bendimerad
Professor at tlemcen university-algeria
Souhila Ferouani
PhD Student in telecommunication at tlemcen university-algeria
G. Abdellaoui
PhD Student in telecommunication at tlemcen university-algeria
F. Debbat
Professor in Mascara University-Algeria
F. T. Bendimerad
Professor at tlemcen university-algeria
