LAUSR

Selection of CDMA and OFDM using machine learning in underwater wireless networks

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1 Published in 2019 at "ICT Express"

DOI: 10.1016/j.icte.2019.09.002

Abstract: Abstract Underwater acoustic (UWA) channels have long propagation delays and irregular Doppler shifts, which make the design of communication scheme difficult. Even though two transceivers are fixed, UWA channels dramatically vary by time since speed… read more here.

Keywords: using machine; cdma ofdm; selection; selection cdma ... See more keywords

PAPR Reduction in OFDM-IM Using Multilevel Dither Signals

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1 Published in 2019 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2019.2892103

Abstract: Orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a novel multicarrier scheme, which uses the indices of the active subcarriers to transmit data. The OFDM-IM also inherits the high peak-to-average power ratio (PAPR) problem,… read more here.

Keywords: reduction ofdm; dither signals; dither; papr reduction ... See more keywords

Amplitude reconstruction of clipped OFDM by using DFT-based least squares

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1 Published in 2017 at "Scientia Iranica"

DOI: 10.24200/sci.2017.4118

Abstract: OFDM is an eective multicarrier transmission technique with one primary disadvantage; it suers from high Peak-to-Average Power Ratio (PAPR). Although clipping and ltering is a simple and eective method for PAPR reduction, it makes in-band… read more here.

Keywords: reconstruction clipped; clipped ofdm; method; amplitude reconstruction ... See more keywords