Volume 8 Number 8 (Aug. 2013)
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JCP 2013 Vol.8(8): 2042-2050 ISSN: 1796-203X
doi: 10.4304/jcp.8.8.2042-2050

Investigation of SNR Estimation Algorithms of FM Signal for the Underwater Acoustic Channel

Chun-xian Gao, Yong-xiu Zhang, En Cheng, and Fei Yuan
Key Laboratory of Underwater Acoustic Communication and Marine Information Technology (Xiamen University), Ministry of Education, P.R.C

Abstract—SNR (Signal to Noise Ratio) estimation is a very important parameter for channel estimation of the communication system. In this paper, some SNR estimation methods of digital modulation system are applied and improved in FM modulation system. Then we summarize several SNR estimation methods (EHM (Envelope High order Moment method), SE (Spectrum Estimation method), FD (Frequency Domain method), EMV (Envelope Mean Variance method), M2M4 (Second order and Fourth order Moment method)). Furthermore, according to the characteristics of FM modulation system, we put forward the improvement of M2M4 and also discuss the optimal algorithm for underwater acoustic Rayleigh channel, Rician channel and Bellhop channel by comparing these methods.

Index Terms—SNR estimation, Rayleigh channel, Rician channel, Bellhop channel

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Cite: Chun-xian Gao, Yong-xiu Zhang, En Cheng, and Fei Yuan, " Investigation of SNR Estimation Algorithms of FM Signal for the Underwater Acoustic Channel," Journal of Computers vol. 8, no. 8, pp. 2042-2050, 2013.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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