发明名称 |
FREQUENCY SYNCHRONIZATION APPARATUS IN OFDM SYSTEM |
摘要 |
<p>PURPOSE: A frequency synchronization device of an OFDM system is provided to improve performance degradation in inferior channel environment by applying a weighting value according to the correlation period of an OFDM multiple path. CONSTITUTION: A channel estimator(100) obtains a main path from a channel impulse response value, each delay time of the main path, and power of the main path and an echo path. A correlator(200) obtains a first correlation value between a first guard period and a first copying period, a second correlation value between a first overlapping period and a second overlapping period, and a third correlation value between a second guard period and a second copying period. A weighting value calculating part(300) obtains a first, a second, and a third weighting value by using noise power.</p> |
申请公布号 |
KR20100094219(A) |
申请公布日期 |
2010.08.26 |
申请号 |
KR20090013542 |
申请日期 |
2009.02.18 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD.;SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION |
发明人 |
LEE, JUNG HOO;CHOI, HYUNG JIN;IM, SE BIN;KIM, JUNG IN;KANG, JIN YONG;LEE, HYUN SUK |
分类号 |
H04L27/26;H04J11/00 |
主分类号 |
H04L27/26 |
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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