A. Benjamin Premkumar

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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)
This paper considers the problem of tracking multiple acoustic sources using a single acoustic vector sensor (AVS). Firstly, a particle filtering (PF) approach is developed to track the direction of arrivals of fixed and known number of sources. Secondly, a more realistic tracking scenario which assumes that the number of acoustic sources is unknown and(More)
—The flexibility of a software-defined radio (SDR) depends on its capability to operate in multi-standard wireless communication environments. The most computationally intensive part of wideband receivers is the channelizer, which extracts multiple narrowband signals from adjacent frequency bands. In an SDR receiver, the compatibility of the channnelizer(More)
Acoustic vector sensor (AVS) signal measures acoustic pressure as well as particle velocity, and therefore contains both the azimuth and the elevation information of the source. Existing 2-D DOA estimation methods for AVS assume that the source is static and extensively rely on the localization techniques. In this paper, a particle filtering (PF) approach(More)
This paper presents the formulation and analysis of some methods for narrowband detection of underwater acoustic sources in impulsive noise using an array of acoustic vector sensors. Since the array signal vector is unknown due to the unknown location of the source, detection is based on the generalized likelihood ratio test which involves estimation of the(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)