{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T13:41:05Z","timestamp":1773668465031,"version":"3.50.1"},"reference-count":9,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2014,3,25]],"date-time":"2014-03-25T00:00:00Z","timestamp":1395705600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/2.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Wireless Com Network"],"published-print":{"date-parts":[[2014,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:p>Communication channels not only suffer from ambient noise but also from deterministic interference. In this paper, we consider signal-to-noise ratio (SNR) estimation in the presence of constant deterministic interference. A maximum likelihood (ML) non-data-aided algorithm is proposed for SNR estimation. We first consider a real-valued model and then extend this to a complex-valued model. The proposed algorithm applies an iterative approach initialized with approximate closed form estimates so as to guarantee stability and convergence. Furthermore, the Cramer-Rao bound (CRB) is also derived as the theoretical limit of the jitter variance. Computer simulations based on pulse-amplitude modulation (PAM) and quadrature amplitude modulation (QAM) sources show that the performance of the proposed algorithm is close to the CRB.<\/jats:p>","DOI":"10.1186\/1687-1499-2014-45","type":"journal-article","created":{"date-parts":[[2014,3,25]],"date-time":"2014-03-25T12:02:02Z","timestamp":1395748922000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Non-data-aided ML SNR estimation for AWGN channels with deterministic interference"],"prefix":"10.1186","volume":"2014","author":[{"given":"Fangjiong","family":"Chen","sequence":"first","affiliation":[]},{"given":"Yabing","family":"Kang","sequence":"additional","affiliation":[]},{"given":"Hua","family":"Yu","sequence":"additional","affiliation":[]},{"given":"Fei","family":"Ji","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2014,3,25]]},"reference":[{"issue":"8","key":"993_CR1","doi-asserted-by":"publisher","first-page":"688","DOI":"10.1109\/LCOMM.2005.1496583","volume":"9","author":"Y Chen","year":"2005","unstructured":"Chen Y, Beaulieu NC: NDA estimation of SINR for QAM signals. 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