4 papers · 1 filter
How much Training is Needed in Downlink Cell-Free mMIMO under LoS/NLoS channels?
Sai Manikanta Rishi Rani, Ribhu Chopra, Kumar Appaiah
The assumption that no LoS channels exist between wireless access points~(APs) and user equipments~(UEs) becomes questionable in the context of the recent developments in the direc…
Robust Direction-of-Arrival Estimation using Array Feedback Beamforming in Low SNR Scenarios
Parth Mehta, Kumar Appaiah, Rajbabu Velmurugan
A new spatial IIR beamformer based direction-of-arrival (DoA) estimation method is proposed in this paper. We propose a retransmission based spatial feedback method for an array of…
Granger Causality Detection via Sequential Hypothesis Testing
Rahul Devendra, Ribhu Chopra, Kumar Appaiah
Most of the metrics used for detecting a causal relationship among multiple time series ignore the effects of practical measurement impairments, such as finite sample effects, unde…
Lattice All-Pass Filter based Precoder Adaptation for MIMO Wireless Channels
Parth Mehta, Agulla Surya Bharath, Kumar Appaiah +2
Modern 5G communication systems employ multiple-input multiple-output (MIMO) in conjunction with orthogonal frequency division multiplexing (OFDM) to enhance data rates, particular…