Anindita Saha

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The wireless communications channel is commonly modelled as imposing a Rayleigh distributed envelope onto any incumbent signals. Antenna arrays have long been recog-nised as enabling exploitation of signal spatial diversity in such an environment based upon the assumption of uncor-related signals at the different antennas. However, it is precisely the(More)
Bombay blood group is a rare blood group in which there is the absence of H antigen and presence of anti-H antibodies. At the time of blood grouping, this blood group mimics O blood group due to the absence of H antigen, but it shows incompatibility with O group blood during cross matching. Serum grouping or reverse grouping are essential for confirmation(More)
— For efficient spectrum utilization in cognitive radio networks it requires appropriate allocation of idle frequency spectrum among coexisting cognitive radios while maximizing total bandwidth utilization and minimizing interference. The fixed spectrum allocation scheme leads to low spectrum utilization across the whole spectrum. This paper is an attempt(More)
i Declaration The contents of this thesis are the results of original research and have not been submitted for a higher degree to any other university or institution. A part of the work in this thesis has been published iii Acknowledgments The work in this thesis is a culmination of my efforts strongly backed by the support of a lot of people to whom I am(More)
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