187 citations · 878 across the 25 of their papers we have counts for
5 papers · 1 filter
Quickest Change Detection of a Markov Process Across a Sensor Array
Vasanthan Raghavan, Venugopal V. Veeravalli
Recent attention in quickest change detection in the multi-sensor setting has been on the case where the densities of the observations change at the same instant at all the sensors…
Why Does a Kronecker Model Result in Misleading Capacity Estimates?
Vasanthan Raghavan, Jayesh H. Kotecha, Akbar M. Sayeed
Many recent works that study the performance of multi-input multi-output (MIMO) systems in practice assume a Kronecker model where the variances of the channel entries, upon decomp…
Low-Complexity Structured Precoding for Spatially Correlated MIMO Channels
Vasanthan Raghavan, Akbar Sayeed, Venu Veeravalli
The focus of this paper is on spatial precoding in correlated multi-antenna channels, where the number of independent data-streams is adapted to trade-off the data-rate with the tr…
Quantized Multimode Precoding in Spatially Correlated Multi-Antenna Channels
Vasanthan Raghavan, Venu Veeravalli, Akbar Sayeed
Multimode precoding, where the number of independent data-streams is adapted optimally, can be used to maximize the achievable throughput in multi-antenna communication systems. Mo…
Capacity of Sparse Wideband Channels with Partial Channel Feedback
Gautham Hariharan, Vasanthan Raghavan, Akbar M. Sayeed
This paper studies the ergodic capacity of wideband multipath channels with limited feedback. Our work builds on recent results that have established the possibility of significant…