发明名称 |
Method and apparatus for fine frequency synchronization in wireless broadband (WiBro) system without using global positioning system (GPS) receiver |
摘要 |
Provided is a fine frequency synchronization method of a WiBro system, and particularly, a fine frequency synchronization method which measures a spread degree of a received signal of an adjacent subcarrier using orthogonality of PN sequences and thereby estimates a frequency offset, in a base station or a wireless repeater without using a GPS receiver. The fine frequency synchronization method includes: (a) performing despreading on received adjacent subcarrier sequences, using a PN sequence transmitted from a transmitting party; (b) obtaining ratios of correlative values obtained by the despreading; and (c) estimating a frequency offset on the basis of the ratio of correlative values. Accordingly, fine frequency offset estimation with relatively low complexity is possible without using a GPS receiver in a WiBro environment where interference signals of other base stations or repeaters exist.
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申请公布号 |
US8031818(B2) |
申请公布日期 |
2011.10.04 |
申请号 |
US20080026108 |
申请日期 |
2008.02.05 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD.;ICU RESEARCH AND INDUSTRIAL COOPERATION GROUP |
发明人 |
LEE SUNG-WON;CHOI YOUNG-GON;KIM JUNG-HO;ROH YONG-SUNG;KIM HAE-LYONG;KIM NAM-SHIK;PARK HYUN-CHEOL;MA JOONG-SOO |
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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