| 摘要: |
| 分别介绍了基于梳状导频和块状导频的OFDM信道估计的原理,重点研究了上述两种导频在不同的信道环境中的信道估计性能.仿真分析展示了两种导频模式对传输信道的不同参数的敏感程度,由此给出了在不同的传输信道条件下导频模式的选择依据. |
| 关键词: 正交频分复用 导频 信道估计 频率选择性衰落信道 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:April 28, 2006Revised:September 22, 2006 |
| 基金项目: |
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| Impact of Channel Features on the Pilot Selection in Pilot-aided OFDM Channel Estimation |
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| Abstract: |
| The principles of OFDM channel estimation based on comb - type and block - type pilots are introduced respectively. The performance of channel estimation based on above two pilots is investigated in different channel scenarios. Numerical results demonstrate the sensitivity of the two pilots to different parameters of transmission channel. Accordingly, the rules of pilot selection in different channel scenarios are given. |
| Key words: OFDM pilot channel estimation frequency selective fading channel |
