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http://dx.doi.org/10.12673/jkoni.2012.16.6.975

A Study on the SNR Estimation Performance of Hierarchical 16QAM  

Kwak, Jae-Min (Department of Information and Communication Eng., Mokpo National Maritime University)
Publication Information
Journal of Advanced Navigation Technology / v.16, no.6, 2012 , pp. 975-981 More about this Journal
Abstract
The SNR estimation performance of hierarchical 16QAM system, which is adopted to simultaneous transmission or efficient image transmission system, is analyzed. Hierarchical 16QAM is modulation system which has different constellation shape from conventional QAM and can provide users with high quality and low quality of data services simultaneously by controlling hierarchical modulation parameter. Assuming AWGN channel, SNR estimation performance characteristics are investigated considering hierarchical modulation parameter and type of constellation points. From simulation results, it is found that constellation point showing superior SNR estimation performance relative to other points is exist. Also, it is known that according to hierarchical modulation parameter, SNR estimation range with more accurate estimation performance is divided.
Keywords
Hierarchical; 16QAM; Estimation; SNR;
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