Synchronization and Channel Estimation in Cyclic Postfix based OFDM System

被引：0
|
作者：
Kim, Jongkyung [1 ]
Lee, Sangjin [1 ]
Seo, Jongsoo [1 ]
机构：
[1] Yonsei Univ, Dept Elect & Elect Engn, Digital Transmiss Lab, Seoul 120749, South Korea
来源：
2006 IEEE 63RD VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2006年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose a new cyclic postfix based orthogonal frequency division multiplexing (OFDM) system. The proposed system shows a superior performance in a symbol time synchronization while achieving a comparable channel estimation performance as compared to a conventional cyclic prefix based OFDM system. In the proposed system, an identical postfix is generated at the end of each OFDM symbol by inserting pilot values amongst the data symbols in a frequency domain and performing Inverse Fast Fourier Transform (IFFT) operation on it. Robust time synchronization is achieved by auto-and cross-correlating the postfix. Also, time or frequency domain channel estimation can be realized by using properly designed postfix according to channel estimation method.
引用
收藏
页码：2028 / 2032
页数：5
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