公开(公告)号：US09525442B2

公开(公告)日：2016-12-20

申请号：US14766586

申请日：2014-02-11

Applicant: SONY CORPORATION

Inventor： Lothar Stadelmeier ,  Jan Zoellner ,  Joerg Robert ,  Philipp Hasse

IPC: H04B1/04 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04B1/0475 ,  H04L25/03828 ,  H04L27/2626

Abstract: An OFDM encoding apparatus for encoding OFDM symbols into an OFDM signal includes: a pre-distortion unit that pre-distorts OFDM symbols into pre-distorted OFDM symbols, the OFDM symbols including payload data and each being carried on multiple OFDM subcarriers; an OFDM generator that generates an OFDM signal from the pre-distorted OFDM symbols by OFDM modulating the pre-distorted OFDM symbols; and a filter that filters the OFDM signal to obtain a filtered OFDM signal, the filter being configured to attenuate the spectrum of the OFDM signal in frequency bands outside the signal bandwidth of the OFDM signal by applying a filter transfer function to the OFDM signal. The pre-distortion unit is configured to apply a pre-distortion transfer function equal to the inverse of the filter transfer function to the OFDM symbols.

Abstract translation: 用于将OFDM符号编码为OFDM信号的OFDM编码装置包括：预失真单元，其将OFDM符号预失真为预失真的OFDM符号，所述OFDM符号包括有效载荷数据，并且每个OFDM符号在多个OFDM子载波上承载; OFDM发生器，其通过对所述预失真的OFDM符号进行OFDM调制从所述预失真的OFDM符号生成OFDM信号; 以及滤波器，对所述OFDM信号进行滤波以获得经滤波的OFDM信号，所述滤波器被配置为通过对所述OFDM信号应用滤波器传递函数来衰减所述OFDM信号的信号带宽外的频带中的OFDM信号的频谱。 预失真单元被配置为将等于滤波器传递函数的逆的预失真传递函数应用于OFDM符号。