Combined Influence of Channel and Amplifier on Multicarrier Modulated RADAR Signals

In recent times, the domain of high speed information transfer has seen a quantum jump in performance with the advent of novel RADAR techniques. The spectrum available for programmable, pulsed radar systems is limited; hence, devising different multicarrier techniques to meet the demands for high da...

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Bibliographic Details
Published in:Procedia computer science 2018, Vol.143, p.30-38
Main Authors: Priyanga, G, Shanmugha Sundaram, G A, Soman, K P
Format: Article
Language:English
Subjects:
Channel models
FBMC
HPA
Multicarrier modulation
OFDM
RADAR waveforms
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Summary:In recent times, the domain of high speed information transfer has seen a quantum jump in performance with the advent of novel RADAR techniques. The spectrum available for programmable, pulsed radar systems is limited; hence, devising different multicarrier techniques to meet the demands for high data throughput becomes imperative. At a radar base station the amplifiers placed in the RF front end are devices that consume most of the power. It creates distortions in the transmitted signal due to its non-linear characteristics. Here, the performance of OFDM and FBMC multicarrier signals transmitted over additive white Gaussian noise (AWGN), Rayleigh fading and Rician fading channels along with the influence of the high power amplifier (HPA) are analyzed. The different types of amplifier models used for comparison are of the solid state power amplifier (SSPA) and traveling wave tube amplifier (TWTA) type. The results are compared for evident degradation in the quality metrics such as spectral efficiency and PAPR.
ISSN:1877-0509
1877-0509
DOI:10.1016/j.procs.2018.10.348