发明名称 |
APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM |
摘要 |
A method for reducing a Peak to Average Power Ratio (PAPR) using reserved tones in a transmission apparatus of an Orthogonal Frequency Division Multiplexing (OFDM) communication system is provided. The method includes detecting a subcarrier spacing interval and the number of spaced symbols based on a predetermined pilot pattern upon signal reception, and determining positions of shifted reserved tones obtained by shifting positions of reserved tones allocated to a predetermined symbol during the number of the spaced symbols at intervals of the spacing interval; determining an impulse waveform obtained by rotating a phase of a complex value of an impulse stored in a memory, using the determined positions of frequency-domain reserved tones of each symbol; calculating a subtrahend for a PAPR of an output signal using the phase-rotated impulse waveform; and reducing a PAPR of an input signal by performing a gradient algorithm using the phase-rotated impulse waveform.
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申请公布号 |
US2008298490(A1) |
申请公布日期 |
2008.12.04 |
申请号 |
US20080133108 |
申请日期 |
2008.06.04 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YUN SUNG-RYUL;KIM JAE-YOEL;LEE HAK-JU;JEONG HONG-SIL;MYUNG SE-HO |
分类号 |
H04L27/28 |
主分类号 |
H04L27/28 |
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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