Description: We propose a compressive method for tracking doubly selective
channels within multicarrier systems, including OFDMsystems. Using
the recently introduced concept of modified compressed sensing
(MOD-CS), the sequential delay-Doppler sparsity of the channel is
exploited to improve estimation performance through a recursive estimation
mode. The proposed compressive channel tracking algorithm
uses a MOD-CS version of OMP with reduced complexity.
Simulation results demonstrate substantial performance gains over
conventional compressive channel estimation
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Mod-CS-chann-track.pdf