| 摘要: |
| 在相关检测的OFDM系统中，信道估计具有十分重要的意义。研究了一种在单音干扰
环境下的OFDM系统中基于预编码的盲信道估计方案。利用接收的干扰信号的频域信息对单音
干扰信号进行准确估计与重构，有效地消除了干扰信号的影响，提高了单音干扰下盲信道估
计的准确性。与其他盲信道估计算法相比，
基于预编码的盲信道估计算法具有较低的运算复杂度以及较快的收敛速度。仿真结果表明
了该算法在干扰估计以及信道估计两方面都取得了较好的性能。 |
| 关键词: 正交频分复用 单音干扰 预编码 盲信道估计 |
| DOI： |
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| 基金项目: |
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| An improved blind channel estimation method for OFDM systems with single tone interference |
| HAO Li-hong,LIU Wei |
| () |
| Abstract: |
| Channel estimation is very important in the coherent detection Orthogonal Freque
ncy Division Multiplexing(OFDM) sy
stems. A precoded-based blind channel estimation method for OFDM systems in the
presence of single tone interfe
rence is studied. By using the frequency domain information of received signals
to accurately estimate and reconstruct the interference signals, the proposed me
thod can eliminate the effects of interference signals and improve the accuracy
of channel estimation. Compared with other blind channel estimation algorithms,
the precoded-based blind channel estimation has low complexity and fast converg
ence speed. The simulation results show that the proposed method achieves good pe
rformances both in the estimation of interferences and channel. |
| Key words: OFDM single tone interference precoding blind channel estimation |
《电讯技术》编辑部 