公开(公告)号：KR100821123B1

公开(公告)日：2008-04-14

申请号：KR1020060114417

申请日：2006-11-20

Applicant: 한국전자통신연구원

Inventor： 박정상 ,  이재권 ,  김진업

IPC: H04J11/00

CPC classification number: H04L27/2614 ,  H04B1/0475 ,  H04L27/2628

Abstract: An amplitude and phase predistortion apparatus and a predistorting method thereof, and an OFDM transmission system using the same and a transmitting method thereof are provided to minimize the calculation complexity for the system and to reduce a PAPR(Peak-to-Average Power Ratio). An amplitude and phase predistortion apparatus includes a measuring unit(21), a calculating unit(22), and a distorting unit(23). The measuring unit measures the contribution between IFTT multi-carrier and an OFDM symbol made by combining the multi-carriers. The calculating unit calculates a signal size and a phase coefficient to be added to each carrier signal based on the measured contribution. The distorting unit distorts each constellation point with corresponding size and phase using the signal size and the phase coefficient.

Abstract translation: 提供了幅度和相位预失真装置及其预失真方法，以及使用该方法和其发送方法的OFDM传输系统，以最小化系统的计算复杂度并降低PAPR（峰值平均功率比）。 振幅和相位预失真装置包括测量单元（21），计算单元（22）和失真单元（23）。 测量单元测量IFTT多载波与通过组合多载波所产生的OFDM符号之间的贡献。 计算单元基于测量的贡献来计算要添加到每个载波信号的信号大小和相位系数。 畸变单元使用信号大小和相位系数来扭曲具有相应尺寸和相位的每个星座点。