Sun, 27 Jul 2008 07:48:50 BST CiteULike: dcastro's qpsk http://www.citeulike.org/user/dcastro/tag/qpsk CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2782014 <i>Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE, Vol. 6 (2001), pp. 3644-3647 vol.6.</i><br /><br />An accurate signal-to-noise ratio (SNR) measurement is essential for cellular and satellite communication receivers for various purposes, including the demodulation algorithm adaptation to the time-varying channel conditions. In this paper, computationally simple SNR estimation methods, called the error vector magnitude (EVM) method and the minimum mean-square error estimation (MMSE) method are proposed. Analytic derivations as well as simulation results are presented to demonstrate the performance of the proposed schemes Simple SNR estimation methods for QPSK modulated short bursts Dong-Joon Shin Wonjin Sung In-Kyung Kim doi:10.1109/GLOCOM.2001.966361 Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE, Vol. 6 (2001), pp. 3644-3647 vol.6. 2008-05-09T23:47:10-00:00 2001 Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE 6 3644 3647 vol.6 estimation qpsk snr http://www.citeulike.org/user/dcastro/article/2782013 <i>Circuits and Systems II: Express Briefs, IEEE Transactions on [see also Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on], Vol. 52, No. 6. (2005), pp. 336-338.</i><br /><br />Signal-to-noise ratio (SNR) measurement is required in many receivers and systems of communications. In this brief, we derive a new SNR's estimator based on the second and fourth-order moments of the complex signals of quadrature phase-shift keying modulations. The mean square error of the estimated SNR by the proposed algorithm is smaller than that by other methods for a low SNR with limited samples. A new SNR's estimator for QPSK Modulations in an AWGN channel Guangliang Ren Yilin Chang Hui Zhang doi:10.1109/TCSII.2005.849008 Circuits and Systems II: Express Briefs, IEEE Transactions on [see also Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on], Vol. 52, No. 6. (2005), pp. 336-338. 2008-05-09T23:47:09-00:00 2005 Circuits and Systems II: Express Briefs, IEEE Transactions on [see also Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on] 52 6 336 338 channel estimator modulation noise qpsk snr http://www.citeulike.org/user/dcastro/article/1767563 <i>Communications Letters, IEEE, Vol. 4, No. 2. (2000), pp. 43-45.</i><br /><br />Four signal-to-noise ratio (SNR) estimators for quaternary phase-shift keying (QPSK)-like signaling are proposed and examined. Two are based on receiver statistics directly related to the SNR while two others are based on receiver statistics inversely related to the SNR. The results show that the estimators based on the inverse of the SNR perform better than the estimators based on the SNR Comparison of four SNR estimators for QPSK modulations NC Beaulieu AS Toms DR Pauluzzi doi:10.1109/4234.824751 Communications Letters, IEEE, Vol. 4, No. 2. (2000), pp. 43-45. 2007-10-14T18:27:39-00:00 2000 Communications Letters, IEEE 4 2 43 45 estimator modulation qpsk snr