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A PREAMBLE STRUCTURE AND A SYNCRONOUS METHOD FOR FREQUENCY OFFSET CORRECTION IN OFDM-FDMA/CDMA/TDMA SYSTEM
A PREAMBLE STRUCTURE AND A SYNCRONOUS METHOD FOR FREQUENCY OFFSET CORRECTION IN OFDM-FDMA/CDMA/TDMA SYSTEM
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机译：OFDM-FDMA / CDMA / TDMA系统中频率偏移校正的预结构和同步方法
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摘要
A preamble structure and a synchronizing method for improving frequency offset correction in an OFDM(Orthogonal Frequency Division Multiplexing)-FDMA(Orthogonal Frequency Division Multiple Access)/CDMA(Code Division Multiple Access)/TDMA(Time Division Multiple Access) system are provided to perform integer frequency offset correction at a time domain and more exact symbol timing correction by using the symmetric and repetitive preamble structure. A preamble is repeated four times by first to fourth sample groups in a time domain and has a symmetric structure. In the second and fourth sample groups, samples having the same number as the first and third sample groups are arranged in reverse order of an order that samples of the first and third sample groups are received. Integer frequency offset correction can be possible.
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