Title :
New Results of SNR Estimation for High-Order Modulation
Author :
Xu, Hua ; Zhang, Dongmei ; Guo, Jianxin
Author_Institution :
Telecommun. Eng. Inst., Air Force Eng. Univ., Xian
Abstract :
The Cramer-Rao lower bounds (CRLB), data-aided maximum-likelihood (ML) signal-to-noise ratio (SNR) estimation algorithm (DAML), decision-directed ML SNR estimation algorithm (DDML) and an iterative ML SNR estimation algorithm for QAM signals are presented in this paper. The performance analysis, computer simulation and performance comparing with another blind SNR estimation algorithm [10, 11] and CRLB are completed. And then the corresponding conclusions are derived.
Keywords :
maximum likelihood estimation; noise; quadrature amplitude modulation; Cramer-Rao lower bounds; QAM signals; data-aided ML SNR estimation; decision-directed ML SNR estimation; high-order modulation; iterative ML SNR estimation; maximum-likelihood SNR estimation; signal-to-noise ratio estimation; Computer simulation; Constellation diagram; Data engineering; Iterative algorithms; Maximum likelihood estimation; Microstrip; Performance analysis; Quadrature amplitude modulation; Signal to noise ratio; Statistics;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.309
