Timing and delay spread estimation scheme in OFDM systems

被引：8
|
作者：
Wen, Jyh-Horng [1 ]
Lee, Shu-Hong [2 ,3 ]
Lee, Gwo-Ruey [2 ]
Chang, Jin-Tong [4 ]
机构：
[1] Tunghai Univ, Dept Elect Engn, Taichung 40704, Taiwan
[2] Natl Chung Cheng Univ, Inst Elect Engn, Chiayi, Taiwan
[3] Chien Kuo Technol Univ, Dept Elect Engn, Changhua, Taiwan
[4] Natl Chung Cheng Univ, Inst Commun Engn, Chiayi, Taiwan
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2008年 / 54卷 / 02期
关键词：
OFDM systems; subblock correlation; timing estimation; delay spread estimation;
D O I：
10.1109/TCE.2008.4560092
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：
In this paper, a scheme for symbol timing estimation and delay spread estimation using subblock correlation is proposed in the OFDM systems. The subblock correlation between the cyclic prefix and data symbol is applied to estimate symbol timing and the length of delay spread. Under a multipath fading channel referred to the OFDM multipath channel model in the standard of IEEE 802.11a/g WLAN, the results show that performance with the proposed scheme is better than that with Beek's scheme. In addition, the length of the delay spread could be estimated in the proposed scheme. Hence, in order to increase the bandwidth efficiency, the length of cyclic prefix could be adaptively assigned in the OFDM system(1).
引用
收藏
页码：316 / 320
页数：5
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