Prabodh Varshney

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— We consider the problem of digital communication in a fading environment using the Multi-Carrier CDMA technology. By incorporating the effect of the pulse-shaping filter in the channel estimation and signal detection modules, we develop new estimator and detector structures which significantly outperform the commonly used time-domain equalizers and(More)
— We consider the problem of digital communication in a Rayleigh flat fading environment using a multiple antenna system. We assume that the transmitter doesn't know the channel coefficients, and that the receiver has only an estimate of them. We further assume that the transmitter and receiver know the statistics of the estimation error. We will refer to(More)
Channel Equalization Algorithms for MIMO Downlink and ASIP Architectures by Predrag Radosavljevic Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary variations of implemented algorithms. On the(More)
— For wireless communication systems in high mobility environments, the usual assumption of perfect channel state information at the receiver is not very realistic. In the presence of channel estimation errors, the conventional PSK or QAM constellations, which are designed based on maximizing the minimum Euclidean distance between constellation points, are(More)
The supply of high data rates is a major goal of the communication industry. Towards this goal one solution is to use high level modulation combined with powerful coding. We propose a turbo-coded high-level modulation system (16/32/64-QAM) for the downlink that could be used for example in the future evolution of the EGPRS. The evaluation of such a system(More)
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