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基于倒谱分析的OFDM信道估计方法 被引量：2

Equalization Method for OFDM System Based on Cepstrum Analysis
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摘要 时域同步正交频分复用(TDS-OFDM)系统利用PN序列作为保护间隔,其中保护间隔用作系统同步和信道估计。由于PN序列相关不是理想δ函数,在信道估计时引入了额外误差。该文对倒谱分析在信号处理中的应用进行了研究,提出了基于倒谱分析的OFDM信道均衡算法。该算法利用QPSK信号作为导频信号,运用倒谱进行信道估计。在多径信道中对算法进行仿真,并且与PN(伪随机序列)相关法信道估计进行比较,仿真结果表明,该算法有良好的均衡效果,比PN相关法有一定的优势。 Time domain synchronous-orthogonal frequency-division multiplexing（TDS-OFDM） system makes use of PN sequence as guard interval,which is used as channel estimation.Because PN serial correlation is not ideal function,extra error has been inducted.A channel equalization method suitable for OFDM system is propose in the paper.Cepstral technique is employed in the method to attain the channel equalization.The simulation results indicate that this method has perfect equalization effect.
作者 郑济均 林竞力 朱维乐
机构地区 空军大连通信士官学校有线电通信系 西华大学电气信息学院 电子科技大学电子工程学院
出处 《电子科技大学学报》 EI CAS CSCD 北大核心 2011年第4期509-511,536,共4页 Journal of University of Electronic Science and Technology of China
关键词 倒谱分析 信道估计 倒谱 正交频分复用 时域同步正交频分复用 cepstrum analysis channel estimation complex cepstrum OFDM TDS-OFDM
分类号 TN92 [电子电信—通信与信息系统]
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参考文献13

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共引文献1

同被引文献21

  • 1Kull B J,Duff R G.,Clarke A J,et al.Distributed downhole measurements describe salt drilling while underreaming[J].Journal of Petroleum Technology,2010,62(2):44-47.
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  • 4Li Cheng,Ding Tianhuai,Wang Peng.An experimen tal rig for near-bit force measurement and drillstring a coustic transmission of BHA[J].Measurement,2011,44(4):642-652.
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  • 7黄咏梅,林敏.基于外差式随机共振的涡街频率检测方法[J].机械工程学报,2008,44(4):138-142. 被引量：11
  • 8刘新平,房军,金有海.随钻测井数据传输技术应用现状及展望[J].测井技术,2008,32(3):249-253. 被引量：65
  • 9李成,丁天怀,陈恳.周期性管结构信道的声传输方法分析[J].振动与冲击,2009,28(2):12-15. 被引量：14
  • 10王晶,张庆,梁霖,张熠卓,徐光华.采用遗传算法的自适应随机共振系统弱信号检测方法研究[J].西安交通大学学报,2010,44(3):32-36. 被引量：26

引证文献2

二级引证文献5

电子科技大学学报
2011年 第4期

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