ML estimation of timing and frequency offset using multiple OFDM symbols in OFDM systems

被引：10
|
作者：
Lv, TJ [1 ]
Chen, J [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat Engn, Beijing 100876, Peoples R China
来源：
GLOBECOM'03: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-7 | 2003年
关键词：
D O I：
10.1109/GLOCOM.2003.1258641
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：
An approach of joint blind estimation of the symbol timing offset and carrier frequency offset using multiple orthogonal frequency-division multiplexing (OFDM) symbols is proposed for OFDM systems in frequency selective fading environment. The proposed approach more greatly improves the estimation accuracy of synchronization parameters than the ML estimation in [10]. This conclusion is derived from analyzing their performance. Meanwhile, simulation shows that estimation of symbol timing is completely correct for signal-to-noise ratio (SNR) as low as 0dB, and the variance of frequency offset estimator is nearly close to its Cramer-Rao bound (CRB) with SNR varying.
引用
收藏
页码：2280 / 2284
页数：5
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