Ashok Armen Tikku

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This dissertation considers the identiication of linear multivariable systems using nite dimensional time-invariant state-space models. Parametrization of multivariable state-space models is considered. A full para-metrization, where all elements in the state-space matrices are parameters, is introduced. A model structure with full parametrization gives two(More)
This paper describes a Texas Instrument (TI) sponsored research carried out jointly by the Virginia Tech Antenna Group (VTAG) and the The research is focused on determining the feasibility of smart transmit and receive handset antennas. The goals are to show reduced power consumption, improved capacity and better link reliability. The research topics(More)
We show that one can do away with the cyclic prefix (CP) for SC-FDE and OFDM at the cost of a moderate increase in complexity of a DFT-based receiver. Such an approach effectively deals with the decrease in the number of channel uses due to the introduction of the CP. It is shown that the SINR for SC-FDE remains the same asymptotically with the proposed(More)
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