A. Benjamin Premkumar

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In this paper, a uniform matrix representation for Ultra-Wideband (UWB) Multiple-Input Multiple-Output (MIMO) systems with Time-Hopping Spread Spectrum (THSS) and Direct-Sequence Spread Spectrum (DSSS) methods is formulated. The Inter Symbol Interference (ISI) is considered for high data rate UWB transmissions in the presence of dense multipath in an indoor(More)
This paper describes a method for maximum power point tracking (MPPT)from Photovoltaic (PV) panel. The conventional method has problems, in that it is impossible to quickly acquire the power generation at the maximum power (MP) point in low solar radiant (irradiation) regions. At high irradiation the voltage coefficient needed to perform the proposed MPPT(More)
Channel selection plays a critical role in cognitive radio networks. In this work, we apply the learning automata techniques to enable a cognitive radio to learn and make decision on channel selection from a set of available channels. The set of randomly available frequency channels is modeled as an unknown environment. As practical networks are usually(More)
In the past, both theoretical work and practical implementation of particle filtering (PF) method have been extensively studied. However, its application in underwater signal processing has received much less attention. This paper intends to introduce PF approach for underwater acoustic signal processing. Particularly, we are interested in direction of(More)
This paper presents a computationally efficient method of 3-D localization of underwater acoustic sources in heavy-tailed non-Gaussian noise by an acoustic vector sensor (AVS) array. Noise is modeled as a Gaussian mixture. Estimation of source coordinates, signal waveform and noise parameters is based on the space-alternating generalized EM (SAGE)(More)
Electroencephalogram (EEG) is the reflection of brain activity and is widely used in clinical diagnoses and biomedical researches. EEG signals recorded from the scalp contain many artifacts that make its interpretation and analysis very difficult. One major source of artifacts is from eye movements that generate the electrooculogram (EOG). Many applications(More)