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A framework of analyzing OMP-based channel estimations in mobile OFDM systems

Publication by Guoping Tan, Thorsten Herfet
Published in IEEE Wireless Communications Letters, 2016


To analyze the mean square error (MSE) performance of orthogonal matching pursuit (OMP)-based compressed channel estimation with deterministic pilot patterns, we propose a closed form mathematical framework. The studies show that, given the knowledge of a statistical channel model, the expected MSE of OMP can be predicted well by this proposed framework. The framework establishes a connection between the MSE to be expected and the following four decisive parameters: 1) the deterministic pilot pattern; 2) the maximum Doppler shift; 3) the number of dominant multipath components; and 4) the SNR.