Moment-Based Joint Estimation of Ricean K-Factor and SNR Over Linearly-Modulated Wireless SIMO Channels

In this paper, we develop a new joint estimator for the Ricean K-factor and the signal-to-noise ratio (SNR) when multiple antenna elements receive linearly-modulated signals with a complex additive white Gaussian noise spatially uncorrelated. The fourth-order cross-moments and the second-order moments of the received signal at a single-input multiple-output (SIMO) system are considered. The SNR is deduced by estimating the powers of the useful signals and the noise. While the K-factor is computed by estimating the kurtosises of the transmitted data and the Ricean channel. The new joint estimator is non-data-aided and does not require the a priori knowledge of the modulation type or order. The performances of this algorithm are investigated in terms of normalized root mean square error over different modulated transmissions and compared with the data-aided auto-correlation function (DA-ACF) based joint estimator extended to a SIMO configuration. Simulation results show that our approach outperforms the DA-ACF estimator.

[1]  Mohamed-Slim Alouini,et al.  Digital Communication Over Fading Channels: A Unified Approach to Performance Analysis , 2000 .

[2]  R. Steele,et al.  Mobile Radio Communications , 1999 .

[3]  Werner Mohr,et al.  Wideband characterisation of fading outdoor radio channels at 1800 MHz to support mobile radio system design , 1994, Wirel. Pers. Commun..

[4]  Ali Abdi,et al.  The Ricean K factor: estimation and performance analysis , 2003, IEEE Trans. Wirel. Commun..

[5]  Gordon L. Stuber,et al.  Principles of Mobile Communication , 1996 .

[6]  Kareem E. Baddour,et al.  Improved estimation of the ricean K-factor from I/Q fading channel samples , 2008, IEEE Transactions on Wireless Communications.

[7]  Abdelaziz Samet,et al.  Modulation Identification Using Moment Features for Communications via Ricean Fading SIMO Channels , 2015, Wirel. Pers. Commun..

[8]  Iyad Dayoub,et al.  Ricean K-Factor and SNR Estimation for M-PSK Modulated Signals Using the Fourth-Order Cross-Moments Matrix , 2012, IEEE Communications Letters.

[9]  Lajos Hanzo,et al.  Mobile Radio Communications: Second and Third Generation Cellular and WATM Systems: 2nd , 1999 .

[10]  Gordon L. Stuber,et al.  Principles of mobile communication (2nd ed.) , 2001 .

[11]  Sofiène Affes,et al.  Moment-based SNR estimation over linearly-modulated wireless SIMO channels , 2010, IEEE Transactions on Wireless Communications.

[12]  Jan M. Kelner,et al.  Geometry-Based Statistical Model for the Temporal, Spectral, and Spatial Characteristics of the Land Mobile Channel , 2015, Wirel. Pers. Commun..

[13]  Laurence B. Milstein,et al.  SNR estimation in Nakagami-m fading with diversity combining and its application to turbo decoding , 2002, IEEE Trans. Commun..

[14]  Abdelaziz Samet,et al.  Mean angle of arrival, angular and Doppler spreads estimation in multiple-input multiple-output system , 2015, IET Signal Process..

[15]  Boualem Boashash,et al.  Ricean K-factor estimation in mobile communication systems , 2004, IEEE Communications Letters.

[16]  Norman C. Beaulieu,et al.  Maximum likelihood estimation of local average SNR in Rician fading channels , 2005, IEEE Communications Letters.

[17]  Sofiène Affes,et al.  Joint Estimation of the Ricean K-Factor and the SNR for SIMO Systems Using Higher Order Statistics , 2011, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[18]  J.A.C. Bingham,et al.  Multicarrier modulation for data transmission: an idea whose time has come , 1990, IEEE Communications Magazine.

[19]  Chintha Tellambura,et al.  Moment-Based Parameter Estimation and Blind Spectrum Sensing for Quadrature Amplitude Modulation , 2011, IEEE Transactions on Communications.

[20]  Georgios B. Giannakis,et al.  Wireless multicarrier communications , 2000, IEEE Signal Process. Mag..

[21]  Norman C. Beaulieu,et al.  Estimation of Ricean K parameter and local average SNR from noisy correlated channel samples , 2007, IEEE Transactions on Wireless Communications.