发明名称 |
APPARATUS AND METHOD FOR REDUCING PEAK-TO-AVERAGE POWER RATIO IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION SYSTEM |
摘要 |
PURPOSE: An apparatus and a method are provided to efficiently reduce a peak-to-average power ratio in an orthogonal frequency division multiplexing wireless communication system without signal distortion. CONSTITUTION: A comparator(210) compares a soft-clipping start point C with an amplitude of an OFDM signal s(t) from a parallel/series converter. When the amplitude of an OFDM signal s(t) is less than the soft-clipping start point C, the first operational amplifier(212) outputs the OFDM signal s(t). When the amplitude of an OFDM signal s(t) is equal to or greater than the soft-clipping start point C, the second operational amplifier(214) outputs the soft-clipping start point C. An adder(216) adds the soft-clipping start point C from the second operational amplifier(214) to the OFDM signal s(t) from the first operational amplifier(212) and outputs a soft-clipped signal Ssoft-clip(t). |
申请公布号 |
KR20030059523(A) |
申请公布日期 |
2003.07.10 |
申请号 |
KR20010088387 |
申请日期 |
2001.12.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JIN, BYEONG IL;JUNG, GI HO;KIM, IN BAE;YOO, HEUNG GYUN |
分类号 |
H04J11/00 |
主分类号 |
H04J11/00 |
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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