V
Vasanthan Raghavan
Researcher at Qualcomm
Publications - 197
Citations - 3148
Vasanthan Raghavan is an academic researcher from Qualcomm. The author has contributed to research in topics: MIMO & Beamforming. The author has an hindex of 28, co-authored 196 publications receiving 2826 citations. Previous affiliations of Vasanthan Raghavan include University of Wisconsin-Madison & University of Illinois at Urbana–Champaign.
Papers
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Systematic Codebook Designs for Quantized Beamforming in Correlated MIMO Channels
TL;DR: This paper proposes a universal codebook design for correlated channels when channel statistical information is known at the transmitter that is robust to channel statistics and is implemented by maps that can rotate and scale spherical caps on the Grassmannian manifold.
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Maximizing MIMO Capacity in Sparse Multipath With Reconfigurable Antenna Arrays
TL;DR: A model for sparse multipath channels is proposed and it is shown that sparse channels afford a new dimension over which capacity can be optimized: the distribution or configuration of the sparse statistically independent degrees of freedom (DoF) in the available spatial signal space dimensions.
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Beamforming Tradeoffs for Initial UE Discovery in Millimeter-Wave MIMO Systems
TL;DR: A physical interpretation between the RSV-type beamformer structures and the angles of departure/arrival of the dominant path(s) capturing the scattering environment provides a theoretical underpinning to the emerging interest on directional beamforming approaches that are less sensitive to small path length changes.
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Sublinear Capacity Scaling Laws for Sparse MIMO Channels
TL;DR: Sparsity of MIMO channels coupled with a knowledge of only the dominant DoF is shown to result in a new paradigm of sublinear capacity scaling that is consistent with experimental results and physical arguments.
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Capacity scaling and spectral efficiency in wide-band correlated MIMO channels
TL;DR: A D-connected model for correlated channels defined by a virtual spatial channel matrix consisting of D nonvanishing diagonals with independent and identically distributed (i.i.d.) Gaussian entries is proposed, which provides a meaningful and tractable measure of the richness of scattering.