公开(公告)号：US20130209098A1

公开(公告)日：2013-08-15

申请号：US13838288

申请日：2013-03-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuanda Huang ,  Liangchuan Li ,  Ling Liu ,  Lei Liu

IPC: H04B10/60

CPC classification number: H04B10/60 ,  H04B10/6161 ,  H04B10/6164 ,  H04L27/2657 ,  H04L27/2697

Abstract: The present invention relates to a method and a device. The method includes: mixing a multi-carrier optical signal with a local optical signal having the same center frequency as that of the multi-carrier optical signal; performing photoelectric conversion and analog-to-digital conversion on an optical signal obtained through the mixing to obtain a digital signal; performing FFT on the digital signal to obtain a frequency domain signal; grouping the frequency domain signal according to each frequency band corresponding to its respective carrier in the multi-carrier optical signal, and performing IFFT on each frequency domain signal group to obtain a corresponding time domain signal for each carrier; and performing data restoration on each time domain signal corresponding to its respective carrier to obtain data carried on each carrier. The solutions of the present invention only require one set of coherent reception device, and have low cost and low power consumption.

Abstract translation: 本发明涉及一种方法和装置。 该方法包括：将多载波光信号与具有与多载波光信号相同中心频率的本地光信号混合; 对通过混合获得的光信号执行光电转换和模数转换，以获得数字信号; 对数字信号执行FFT以获得频域信号; 根据多载波光信号中与其相应载波相对应的每个频带对频域信号进行分组，并对每个频域信号组执行IFFT，以获得每个载波的相应时域信号; 并对与其各自的载波相对应的每个时域信号执行数据恢复，以获得每个载波上承载的数据。 本发明的解决方案仅需要一组相干接收装置，并且具有低成本和低功耗。