发明名称 |
Apparatus for estimating frequency offset in OFDM system |
摘要 |
Provided is an apparatus for estimating a frequency offset by one training symbol including two symbols having the same structure and value in an OFDM system. The apparatus includes a first likelihood function calculator for modeling non-Gaussian impulsive noise included in the training symbol to a Cauchy probability density function in which a characteristic exponent of a BISalphaS probability density function is 1, and calculating a likelihood function of a Cauchy distribution using the Cauchy probability density function, and a first frequency offset estimator for estimating an effective frequency offset value in which the likelihood function of the Cauchy distribution of the first likelihood function calculator becomes highest as a frequency offset estimation value. Thereby, it is possible to improve the performance of frequency offset estimation in non-Gaussian impulsive noise environments. |
申请公布号 |
US8428200(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US20100893579 |
申请日期 |
2010.09.29 |
申请人 |
SONG CHONGHAN;KIM JUNHWAN;LEE YOUNGPO;KANG SEUNG GOO;YOON SEOKHO;SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION |
发明人 |
SONG CHONGHAN;KIM JUNHWAN;LEE YOUNGPO;KANG SEUNG GOO;YOON SEOKHO |
分类号 |
H04L27/06 |
主分类号 |
H04L27/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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