DocumentCode
2344982
Title
An envelop-based SNR estimation algorithm for QAM signals
Author
Zuo, ZhenYong ; Liu, Kai
Author_Institution
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
fYear
2009
fDate
25-27 May 2009
Firstpage
3868
Lastpage
3871
Abstract
A novel signal-to-noise ratio (SNR) estimation algorithm for QAM signals in the additive Gaussian white noise channel (AWGN) is presented. Considering the real and imaginary components (I/Q) of QAM signals respectively, a new SNR estimator based on signal envelop is derived. The performance of our estimator is analyzed and compared with the other estimation methods. The simulation results show that the proposed algorithm can achieve higher estimation precision and lower computation complexity even the true SNR is negative.
Keywords
AWGN channels; channel estimation; quadrature amplitude modulation; AWGN channel; QAM signal estimation; SNR estimation algorithm; additive Gaussian white noise channel; quadrature amplitude modulation; AWGN; Constellation diagram; Multiaccess communication; Performance analysis; Phase estimation; Quadrature amplitude modulation; Signal analysis; Signal to noise ratio; State estimation; Statistics; QAM signals; SNR estimation; signal envelop;
fLanguage
English
Publisher
ieee
Conference_Titel
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location
Xi´an
Print_ISBN
978-1-4244-2799-4
Electronic_ISBN
978-1-4244-2800-7
Type
conf
DOI
10.1109/ICIEA.2009.5138931
Filename
5138931
Link To Document