Research on user pairing algorithm for LTE femtocell uplink

To improve the space-time adaptive processing (STAP) performance of airborne radar in complex environments, a generalised eigenvalue reweighting covariance matrix estimation algorithm called GERCM is proposed here. First, the interference plus noise (IPN) covariance matrix of cell under test (CUT) data is estimated by the selected target-free training samples around the CUT with the sample covariance matrix method. Then, with the component decompositions of the selected training samples and the assumption of approximately equal subspace, the IPN covariance matrix of CUT data is reformulated by the eigenvector matrix, eigenvalue matrix, and the eigenvalue reweighting vector. Subsequently, based on the modified covariance matching estimation criterion, the eigenvalue reweighting vector is estimated by solving the redesigned convex optimisation problem with the Lagrange dual method. Finally, the STAP weight vector is calculated to process the CUT data. The proposed algorithm can obtain a relatively accurate IPN covariance matrix of CUT data by sufficiently utilising the non-homogeneous training samples and can effectively protect the moving targets in CUT data, which can be applied to airborne radar with arbitrary array structure and antenna configuration. Simulation results and performance analyses based on the multi-channel airborne radar measurement data demonstrate the effectiveness of the proposed GERCM algorithm.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Research on user pairing algorithm for LTE femtocell uplink

Cited by 5 publications

References 5 publications

Classification of code-modulated visual evoked potentials using adaptive modified covariance beamformer and EEG signals

Classification of code-modulated visual evoked potentials using adaptive modified covariance beamformer and EEG signals

Adaptive detection for passive radars using the structure of interference covariance matrix

A generalised eigenvalue reweighting covariance matrix estimation algorithm for airborne STAP radar in complex environment

Contact Info

Product

Resources

About