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Alternative TitleNew SNR Estimation Methods in Digital QPSK Receiver
付文君; 姜景山; 王拴荣; 刘思昱; 北京8701信箱
Source Publication电子与信息学报
Keyword卫星通信 最大似然估计 snr估计 qpsk 数字接收机
Other AbstractSNR maximum likelihood estimator based on data directed decision was evaluated first, and was concluded as a biased estimator. An unbiased estimator can be acquired through high order moments of received data. Two SNR estimators based on iteration method were developed in this paper. One is solving the QPSK NDA maximum likelihood equation by gradient approximation, which has better convergence performance than other methods. The other is based on the statistical parameters of received data, which not only makes received data buffering unnecessary, but also reduces iteration calculation greatly compared with other iteration methods, and more important, not at the cost of estimation performance degradation. Finally, the result of several SNR estimators in performance and calculation were compared and analyzed.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
付文君,姜景山,王拴荣,等. QPSK数字接收机中的SNR估计的新方法[J]. 电子与信息学报,2007,29(2):255-259.
APA 付文君,姜景山,王拴荣,刘思昱,&北京8701信箱.(2007).QPSK数字接收机中的SNR估计的新方法.电子与信息学报,29(2),255-259.
MLA 付文君,et al."QPSK数字接收机中的SNR估计的新方法".电子与信息学报 29.2(2007):255-259.
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