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一种适用于CMMB系统的信道估计方法 被引量：1

A Feasible Method of Channel Estimation for the CMMB System
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摘要 在对导频符号处信道冲击响应估计以最小二乘(LS)准则的前提下,通过对正交频分复用(OFDM)系统中各种信道插值算法的分析及其在中国移动多媒体广播(CMMB)系统中的性能仿真,提出了一种适用于CMMB系统的信道估计方法。该方法在频率域中采用低阶维纳插值滤波方法完成,时间域采用线性插值完成。该方案不仅能降低系统的实现复杂度,而且能在恶劣的环境下获得良好的系统性能。 On the premise of estimating the pilot-symbol channel impulse response through the least square rule,this paper presents a feasible channel estimation scheme for the CMMB system on the analysis of various channel interpolation arithmetic in OFDM system and simulation performance in CMMB.The scheme adopts low-rank wiener filter to complete the channel estimation in frequency-domain and adopts linear interpolation to complete the channel estimation in time-domain.The plan can reduce the system implementation complexity and achieve a good performance in the bad environment as well.
作者 彭石 颜永红 黑勇 乔树山
机构地区 湖南大学物理与微电子科学学院 中国科学院微电子研究所
出处 《宇航计测技术》 CSCD 2010年第3期49-52,共4页 Journal of Astronautic Metrology and Measurement
关键词 正交频分复用 CMMB 信道估计 OFDM CMMB Channel estimation
分类号 TN407 [电子电信—微电子学与固体电子学]
  • 相关文献

参考文献6

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二级参考文献9

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共引文献97

同被引文献15

  • 1张浩,冯贤光,叶梧,冯穗力,徐兴.QAM中基于LLR的软输出Viterbi译码器的实现[J].科学技术与工程,2005,5(14):944-949. 被引量：3
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  • 8Song Jie, He You, Guan Jian, et al.. Direct wave estimation of non-cooperative bistatic pulse radar using LMS adaptive filter[C]. Chinese Control and Decision Conference, Guilin, 2007: 2879-2882.
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引证文献1

二级引证文献25

宇航计测技术
2010年 第3期

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