Nahina Islam

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In this paper we analyse the energy efficiency of MQAM and MFSK for short range wireless transmissions, up to a few 100's of meters, and propose optimum rate adaptation to minimize the energy dissipation during transmissions under different channel environment. Energy consumed for transmitting the data over a distance to maintain a prescribed error(More)
The energy efficiency of cellular base stations is known to be improved by having the base station in sleep modes whenever possible. In this paper we present our study on ternary state transceivers for cellular base stations for further improving the energy efficiency. We consider transceivers that are capable of switching between sleep, stand-by and active(More)
Polar and non-polar solvents; ethanol and toluene respectively were used to dissolve and investigate the photochromism behavior of 6-nitro BIPS at different solvent concentration. Absorption spectra of 6-nitro BIPS in low concentration solvent were arising to absorption peak of 530nm and 600nm after UV irradiation for ethanol and toluene respectively. At(More)
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