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8PSK信号在衰落信道下信噪比盲估计算法 被引量：2

Blind SNR Estimation Algorithm for 8PSK Signal in Fading Channel
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摘要 针对传统信噪比估计算法要求利用训练序列或一帧数据范围内信道系数恒定等问题,文章提出了一种8PSK信号在衰落信道下盲信噪比估计算法。该算法利用信道系数的统计特性,理论分析信噪比与接收信号的数值关系,采用多项式数据拟合和观测量归一化处理的方式,推导信噪比与接收信号解析式。数值仿真表明该算法在0～8dB范围内,可取得良好的信噪比估计效果。 In allusion to the problem of requiring training sequence or channel coefficients being constant in the frame for traditional SNR estimating,the paper proposes a blind SNR estimation algorithm for 8PSK signal in fading channel.The algorithm theoretically analyzes the relation between the SNR and receiving signal,and deduces its analytic expression by polynomial fitting and middle observation value normalizing based on the Statistical properties of the channel.The numerical simulation indicates that the algorithm can achieve perfect SNR estimation effect for the SNR between 0 to 8dB.
作者 田伟 周新力 宋斌斌 龚岳州
机构地区 海军航空工程学院训练部 海军航空工程学院电子信息工程系
出处 《舰船电子工程》 2011年第11期53-56,78,共5页 Ship Electronic Engineering
关键词 信噪比估计 衰落信道 数据拟合 高斯分布 瑞利分布 SNR estimation fading channel data fitting Gaussian distribution Rayleigh distribution
分类号 TN911.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献12

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二级参考文献21

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共引文献40

同被引文献15

  • 1Francois-xavier Socheleau. Non data-aided SNR estimation of OFDM siganals [J]. IEEE Communications Letters, 2008, 12 (11): 813-814.
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  • 3CHEN Yunfei, Norman C Beaulieu. An approximate maximum likelihood estimator for SNR iointly using pilot alld data symbols [J]. IEEE Communications Letters, 2005, 9 (6): 517-519.
  • 4Markus A Dangel, Jurgen Lindner. How to use a priori infor- mation of data symbols for SNR estimation [J]. IEEE Signal Processing Letters, 2006, 13 (11):661-662.
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  • 7Socheleau F. Non data-aided SNR estimation of OFDM siganals[J]. IEEE Communication Letters, 2008, 12(11): 813-814.
  • 8Ren Guangliang, Chang Yilin, Zhang Hui. A new SNR's estimator for QPSK modulations in an AWGN channel [J]. IEEE Trans on Circuits and Systems, 2005, 52(6): 336-338.
  • 9Chen Yunfei, Beaulieu N C. An approximate maximum likelihood estimator for SNR jointly using pilot and data symbols [ J]. IEEE Communication Letters, 2005, 9 (6) : 517-519.
  • 10Dangel M A, Lindner J. How to use A priori information of data symbols for SNR estimation[ J]. IEEE Siganl Pro- cessing Letters, 2006, 13 ( 11 ) : 661-662.

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舰船电子工程
2011年 第11期

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