发明授权
- 专利标题： Method and apparatus for modulating symbols in an orthogonal frequency division multiplexing system and transmission apparatus using the same
- 专利标题（中）： 用于在正交频分复用系统中调制符号的方法和装置及使用其的发送装置
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申请号： US11966249申请日： 2007-12-28
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公开(公告)号： US08046398B2公开(公告)日： 2011-10-25
- 发明人: Jun-Kyu Kang , Young-Ik Cho , Hun-Kee Kim
- 申请人： Jun-Kyu Kang , Young-Ik Cho , Hun-Kee Kim
- 申请人地址： KR
- 专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人地址： KR
- 代理机构： The Farrell Law Firm, P.C.
- 优先权： KR10-2006-0137082 20061228
- 主分类号： G06F15/00
- IPC分类号： G06F15/00
摘要：
A method for modulating a symbol in a transmitter of an Orthogonal Frequency Division Multiplexing (OFDM) system. The symbol modulation method includes multiplying an input stream of an Inverse Fast Fourier Transform (IFFT) unit by a Twiddling factor for circular-shifting the input stream of the IFFT unit by a Cyclic Prefix (CP) length; performing IFFT on the input stream of the IFFT unit, which is multiplied by the Twiddling factor; buffering data corresponding to the CP length beginning from a front of an output stream of the IFFT unit; and generating an OFDM symbol by forward-copying the buffered data to a back of the output stream of the IFFT unit.
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