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基于导频的OFDM信道估计算法的比较与分析 被引量：6

Research and Analysis on the Pilot-aided OFDM Channel Estimation
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摘要 OFDM(正交频分复用)作为一种频谱利用率较高的技术,越来越受到人们的关注。介绍了基于导频的OFDM信道估计的基本算法,主要研究了梳状导频插入的LS(最小平方误差)算法和块状导频插入的LMMSE(线性最小均方误差)算法,对各种方法的性能、适用性和复杂度进行了分析,并在此基础上提出了进一步的研究方向。 As a technology offering high spectral efficiency, orthogonal frequency division multiplexing （OFDM） draws more people＇s attention. This paper presents various pilot-aided channel estimation methods of the OFDM systems and mainly focuses on the channel estimation based on comb-type pilot assignment and block-type pilot assignment. The performance, application and complexity of the different methods are compared. Based on the sutdies, a direction for the advanced research is proposed in conclusion of the paper.
作者 蒋琦 刘洋 王家恒
机构地区 东南大学移动通信国家重点实验室
出处 《电子工程师》 2005年第8期32-35,共4页 Electronic Engineer
关键词 信道估计 正交频分复用 LS LMMSE channel estimation, orthogonal frequency division multiplexing, IS, LMMSE
分类号 TN911.2 [电子电信—通信与信息系统]
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参考文献8

  • 1Hsieh Meng-Han, Wei Che-Ho. Channel Estimation for OFDM Systems Based on Comb-type Pilot Arrangement in Frequency Selective Fading Channel. IEEE Trans on Consumer Electronics, 1998,44 ( 1 ): 217 - 225
  • 2Tufvesson F, Maseng T. Pilot Assisted Channel Estimation for OFDM in Mobile Cellular Systems. In: Proceedings of IEEE Vehicular Technology Conference, Vol 3. Phoenix (AZ USA), 1997. Piscataway (NJ, USA): IEEE,1997. 1639 -1643
  • 3Coleri S, Ergen M, Puri A, et al. Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems. IEEE Trans on Broadcasting, 2002, 48 (3): 223 - 229
  • 4Van de Beek J J, Edfors O, Sandell M, et al. On Channel Estimation in OFDM Systems. In: Proceedings of IEEE 45th Vehicular Technology Conference, Vol 2. Chicago (IL,USA), 1995. Piscataway (NJ, USA): IEEE, 1995. 815 -819
  • 5Edfors O, Sandell M, Van de Beek J J, et al. OFDM Channel Estimation by Singular Value Decomposition. IEEE Trans on Communications, 1998,46 ( 7 ): 931 - 939
  • 6Hoeher P, Kaiser S, Robertson P. Two-dimensional Pilotsymbol-aided Channel Estimation by Wiener Filtering. In Proceedings of IEEE International Conference on Acoustics,Speech and Signal Processing, Vol 3. Munich (Germany),1997. Piscataway(NJ, USA): IEEE, 1997. 1845 -1848
  • 7Jeon W G, Paik K H, Cho Y S. An Efficient Channel Estimation Technique for OFDM Systems with Transmitter Diversity.In: Proceedings of 11 th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Vol 2. London ( UK), 2000. Piscataway ( NJ, USA ): IEEE, 2000.1246 - 1250
  • 8Li Y, Chuang J C, Sollenberger N R. Transmitter Diversity for OFDM Systems and Its Impact on High-rate Data Wireless Networks. IEEE Journal on Selected Areas in Communications, 1999, 17(7): 1233-1243

同被引文献28

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电子工程师
2005年 第8期

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