@inproceedings{79852a2bbc0f48bfb5b68ffcf7f2a7fc,
title = "NDA SNR estimation with phase lock detector for digital QPSK receivers",
abstract = "In this paper, based on analyzing some existing phase lock detectors for quadratic phase-shift keying (QPSK), we propose a novel method of estimating the signal-to-noise ratio (SNR) operating with the lock metric value of classical Mthpower (M=4) phase lock detector. The proposed lock detectorbased SNR estimator can perform better than the conventional SNR estimator in terms of mean estimated value (MEV) at medium to high SNR when phase recovery loop is in-lock status. And its normalized mean squared error (NMSE) can reach Cramer-Rao bounds (CRBs) at that SNR. Moreover, the computational complexity of new estimator operating in phase recovery loop is analyzed with less additional multiplications than that of conventional one. This estimation method can also be applied to other similar phase lock detectors.",
keywords = "Lock detector, NDA, QPSK, SNR estimator",
author = "Hua Wang and Chaoxing Yan and Jingming Kuang and Nan Wu and Zesong Fei and Meng Zheng",
year = "2010",
doi = "10.1109/VETECS.2010.5493907",
language = "English",
isbn = "9781424425198",
series = "IEEE Vehicular Technology Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2010 IEEE 71st Vehicular Technology",
address = "United States",
note = "71st IEEE Vehicular Technology Conference, VTC 2010-Spring ; Conference date: 16-05-2010 Through 19-05-2010",
}