S. Kirthiga

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In this paper, the channel for the downlink of Long-Term Evolution (LTE) that uses Orthogonal Frequency Division Multiple Access (OFDMA) is modelled and estimated. The Rayleigh channel is approximated to be a Jakes process which is modelled using an autoregressive (AR) model. An iterative Kalman filtering algorithm for estimation of the time-variant(More)
To ensure reliable communication and improve performance of a wireless communication system, it is required for the transmitter and receiver to have fair knowledge about the channel state information (CSI). Analysis of the basic channel prediction schemes like Parametric Radio channel model, Autoregressive model based prediction and Bandlimited basis(More)
Today, communication systems face major shortages in availability of free spectrum. Cognitive radio has evolved as the most feasible technology which can empower us to effectively utilize the available spectrum. A vital component of a Cognitive Radio Network is spectrum sensing, i.e. its ability to detect the presence of a primary user. This paper employs(More)
The Millimeter Waves are allocated with 60GHz frequency range as an unlicensed band worldwide. Millimeter waves become very useful for short-range communications because of its high data rate, its large-available bandwidth of 7GHz and the Oxygen absorption present at that band. The 60GHz indoor channel contains much of multipath components and needs the use(More)
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