access icon free Blind estimation of transmit-antenna number for non-Cooperative multiple-input multiple-output orthogonal frequency division multiplexing systems

In this study, the authors propose a non-parametric algorithm to implement the estimation of transmit-antenna number, which is a prerequisite for blind interception process of multiple-input multiple-output orthogonal frequency division multiplexing signals in frequency selective fading. Specifically, a series of test statistics are constructed by exploiting the eigenvalues of the sample covariance matrices from each subcarrier, followed by a combination of these test statistics. As a consequence, the number of transmit antennas can be determined after a serial binary hypothesis testing. The theoretical analysis and simulation results verify the rapid convergence and high reliability of the proposed algorithm at a relatively low signal-to-noise ratio .

Inspec keywords: covariance matrices; fading; eigenvalues and eigenfunctions; MIMO communication; OFDM modulation; blind source separation; statistical testing; transmitting antennas

Other keywords: orthogonal frequency division multiplexing signals; test statistics; eigenvalues; noncooperative multiple-input multiple-output system; blind interception process; blind estimation; sample covariance matrices; OFDM signals; serial binary hypothesis testing; MIMO technique; frequency selective fading; transmit-antenna number; nonparametric algorithm

Subjects: Other topics in statistics; Signal processing and detection; Radiowave propagation; Radio links and equipment; Algebra; Single antennas; Modulation and coding methods

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