Channel estimation based on comb-type pilot structure in OFDM system with null subcarriers

被引：1
|
作者：
Kim, Jihyung [1 ]
Kwon, Dong Seung [1 ]
Nam, Sangho [2 ]
Hong, Daesik [2 ]
机构：
[1] Elect & Telecommun Res Inst, Mobile Telecommun Res Div, Taejon 305700, South Korea
[2] Yonsei Univ, Ctr Informat Technol Yonsei Univ, Informat & Telecommun Lab, Seoul 120749, South Korea
来源：
2007 IEEE 66TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5 | 2007年
关键词：
D O I：
10.1109/VETECF.2007.236
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper analyzes the degradation effect of null subcarriers in orthogonal frequency division multiplexing (OFDM) systems on the time-domain maximum likelihood (ML) estimation performance. The analysis is used as the basis for a proposal for a new channel estimation method that can overcome performance degradation caused by null subcarriers. The accuracy of the proposed channel estimation is guaranteed by using an interpolation of the estimated channel in the frequency domain that comes before the channel estimation in the time domain.
引用
收藏
页码：1092 / +
页数：2
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