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单载波频域均衡中的信道估计技术研究 被引量：3

Research on Channel Estimation in SC-FDE
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摘要 为了克服频率选择性信道中符号间干扰带来的影响,研究了单载波频域均衡系统中的信道估计技术。研究了最小二乘(Least Squre,LS)算法及离散傅里叶变换(Discrete Forurier Transform,DFT)改进算法,并将高斯白噪声信道中的信噪比估计方法引入到单载波频域均衡系统中。仿真结果表明基于DFT的改进算法可以有效提升估计精度,二,四阶矩(2,4-ordermoment,M2 M4)等高斯信道中的信噪比算法可以应用到单载波频域均衡系统当中。 In order to reduce the effect of inter symbol interference, channel estimation was studied in SC-FDE systems. LS algorithm and DFT-based algorithm were studied and signal-to-noise estimation algorithms in AWGN channel were introduced to SC-FDE systems. Simulation results show that the DFT-based algorithm can improve the estimation precision and signal-to-noise estimation algorithms in AWGN channel, such as M2M4 algorithms can apply in SC-FDE systems after equalization.
作者 王荆宁 董小平 张航
机构地区 中国电子科技集团公司第五十四研究所 哈尔滨工业大学通信技术研究所
出处 《科学技术与工程》 2011年第28期6855-6858,6868,共5页 Science Technology and Engineering
基金 中国博士后科学基金项目(20110490989) 国家自然科学基金项目(61071104)资助
关键词 单载波频域均衡(SC—FDE) 频率选择性信道 信道估计 信噪比估计 single carrier frequency domain equalization frequency selective channel channel estimation signal-to-noise estimation
分类号 TN919.33 [电子电信—通信与信息系统]
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参考文献7

  • 1Falconer D, Ariyavisitakul S L, Benyamin Seeyar A,et al. Frequency domain equalization for single-carrier broadband wireless systems. IEEE Communications Magazine, 2002;40(4) : 58-66.
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同被引文献25

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科学技术与工程
2011年 第28期

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