发明名称 |
CIRCUIT AND METHOD FOR REMOVING FREQUENCY OFFSET, AND COMMUNICATION APPARATUS |
摘要 |
A circuit and a method for removing a frequency offset and a communication apparatus including the circuit, capable of removing the frequency offset by tracking rapidly and accurately in a payload section. A sequence of sample levels is obtained by sampling a frequency level of the baseband signal at every 0.5 symbol interval. Absolute values of differences between the frequency levels adjacent to each other at every 1 symbol are calculated as first difference absolute values. Absolute values of differences between the frequency levels adjacent to each other at every 1 symbol are calculated as second difference absolute values. When the first difference absolute values are greater than a predetermined first determination value or the second difference absolute values are less than a predetermined second determination value, the average value calculated is set as the frequency offset.
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申请公布号 |
US2013148762(A1) |
申请公布日期 |
2013.06.13 |
申请号 |
US201213693956 |
申请日期 |
2012.12.04 |
申请人 |
LAPIS SEMICONDUCTOR CO., LTD.;LAPIS SEMICONDUCTOR CO., LTD. |
发明人 |
MIZUNO KOUTARO |
分类号 |
H03B28/00;H04B1/16 |
主分类号 |
H03B28/00 |
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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