发明名称 |
Method and apparatus for acquiring synchronization in code division multiple access system |
摘要 |
A method and an apparatus for acquiring downlink frame synchronization are provided. The method includes phase-rotating a mid-amble of a first Time Slot (TS) of a received sub-frame within an area and estimating a Channel Impulse Response (CIR), calculating a Maximum Likelihood (ML) between a downlink synchronization code of the received sub-frame and a downlink synchronization code generated in a terminal by using the estimated CIR, correlating downlink synchronization codes of a plurality of sub-frames and the downlink synchronization code generated and calculating ML values of the plurality of sub-frames with respect to the plurality of sub-frames corresponding to M Transmission Time Intervals (TTIs), and calculating hypothesis values of hypotheses according to a frequency interval and a phase offset of the generated downlink synchronization code based on the calculated ML values of the plurality of sub-frames and drawing a frequency offset and a hypothesis corresponding to a maximum value. |
申请公布号 |
EP2779761(A2) |
申请公布日期 |
2014.09.17 |
申请号 |
EP20130179496 |
申请日期 |
2013.08.06 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD |
发明人 |
SHIM, MYUNG-JOON;WON, SEUNG-HWAN;CHOI, SANG-WON;MOON, JONG-GUN;HWANG, JONG-YOON |
分类号 |
H04W56/00;H04B1/7073;H04B1/7087 |
主分类号 |
H04W56/00 |
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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