发明名称 |
Method and apparatus for preamble synchronization in wireless radio frequency identification (RFID) systems |
摘要 |
The present invention provides methods and apparatuses for detection of a preamble portion of a data packet. A plurality of samples are received in an input signal. Samples that occur between consecutive sign changes in the received plurality of samples are counted. The counting of samples is performed a number of times to produce a sequence of counts of samples between consecutive sign changes in the received plurality of samples. Matched filtering of the sequence of counts of samples is performed to determine whether a preamble is detected. Bit rate and timing are initialized for data decoding based on parameters of the sequence of sample counts of a detected preamble.
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申请公布号 |
US2007071036(A1) |
申请公布日期 |
2007.03.29 |
申请号 |
US20050234417 |
申请日期 |
2005.09.26 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
OKUNEV YURI;MAIZENBERG VALERY |
分类号 |
H04J3/06 |
主分类号 |
H04J3/06 |
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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