UNDERSTANDING THE WIRELESS CHANNEL
NeTS: Small: Theory and Applications of Sparse Approximations of the Channel State Information in Wi-Fi Networks
REPRESENTATIVE RESULTS
CSIApx: A Fast CSI Compression Algorithm
We propose CSIApx, a very fast and lightweight method to compress the CSI of Wi-Fi networks. CSIApx is based on our finding that any sinusoid can be approximated very well by a set of base sinusoids on constant frequencies.
ParEst: A Novel CSI Estimation Algorithm
ParEst estimates the CSI from multiple transmitting antennas jointly, and can immediately replace the existing CSI estimation methods in Wi-Fi and LTE/5G NR.
The Zenith Scheme
The Zenith Scheme is a novel open-loop wireless data transmission scheme for OFDM MIMO systems, which modulates data on two dimensional sinewaves, and is motivated by the fact that typical wireless channels are sparse in the frequency domain, resulting in low correlations, hence better separation, between the Channel State Information (CSI) of data modulated on 2D different sinewaves.
