Semiblind carrier frequency offset estimation for OFDM systems

被引：0
|
作者：
Fusco, Tilde [1 ]
Marrone, Ferdinando [1 ]
Tanda, Mario [1 ]
机构：
[1] Univ Naples Federico II, Dipartimento Ingn Elettron & Telecomunicaz, I-80125 Naples, Italy
来源：
2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14 | 2007年
关键词：
D O I：
10.1109/ICC.2007.132
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 we consider the problem of semiblind carrier frequency offset (CFO) estimation for OFDM systems. Specifically, we consider a synchronization scheme based on the insertion of pilot tones in the OFDM block. In this case, if the number of subcarriers is sufficiently large, the received signal vector can be modeled as a complex Gaussian random vector with a nonzero mean. Then, by exploiting the joint probability density function for complex Gaussian random vectors, semiblind maximum likelihood CFO estimators are derived. The performance of the proposed semiblind algorithms is assessed via computer simulations and compared with that of some blind CFO estimators previously proposed in the literature.
引用
收藏
页码：773 / 778
页数：6
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