K. P. Arunkumar — accepted AI-conference papers

2025

Decision-Aided Progressive Symbol Phase Equalizer in Sweep Spread Carrier Underwater Acoustic Communications

Anoop R., Manju M. Raj, K. P. Arunkumar, Chandra R. Murthy

ICASSP 2025accepted

Sweep spread carrier (S2C) acoustic communication uses wideband chirp waveforms as they are well suited for communicating in an undersea multipath environment. While the gradient heterodyne receivers in the S2C systems can handle the multipath arrivals, we show that they are extremely sensitive to a…

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2023

Variational Bayesian Channel Estimation in Wideband Multi-Scale Multi-Lag Channels

Niladri Halder, K. P. Arunkumar, Chandra R. Murthy

ICASSP 2023accepted

A new variable bandwidth multicarrier (VBMC) waveform was presented in [1] for communicating over wideband rapidly time-varying multi-scale multi-lag (MSML) channels. Perfect channel state information was assumed to be available at the receiver in [1]. In this work, we address the problem of channel…

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