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Method for processing data in an optical network component and optical network component

A technology for optical network components and data processing, applied in electromagnetic network arrangements, electrical components, digital transmission systems, etc., can solve problems such as damage to the overall performance of the system, and achieve cost-effective and low-complexity effects

Active Publication Date: 2015-08-05
XIEON NETWORKS SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this case a very high power carrier is required and it compromises the overall performance of the system

Method used

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  • Method for processing data in an optical network component and optical network component
  • Method for processing data in an optical network component and optical network component
  • Method for processing data in an optical network component and optical network component

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Embodiment Construction

[0046] The provided solution proposes inter alia a Discrete Inverse Fourier Transform in the transmitter, which increases the spectral efficiency of an optical signal by shaping the spectrum of the optical signal in an OFDM-like manner. Furthermore, the discrete inverse Fourier transform makes the signal compatible with direct detection without digital signal processing and without having to send an optical carrier along with the signal. Hence, there is no such need for complex DSP, complexity is desirable even for high data rates (eg, >10 Gbps), and high spectral efficiency is achieved since no bandwidth is reserved for optical carriers.

[0047] At the transmitter, an OFDM-like optical signal is generated, where each optical subcarrier is a linear combination of all other subcarriers such that after direct detection, at every kth sampling point, the electrical signal has the same A numerical value proportional to the carrier.

[0048] The transmitter can be implemented usin...

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Abstract

A method for processing data in an optical network element is provided, wherein a multicarrier signal is linear pre-coded, and wherein the linear pre-coded signal is modulated. An according optical network element is also suggested.

Description

technical field [0001] The invention relates to methods and devices for processing data in optical network components and to corresponding optical network components. Background technique [0002] As broadband Internet connections and mobile data transmission become ubiquitous technologies, the requirements related to bit rates over WDM optical channels are also increasing. In this context, the spectral efficiency of the modulation format used is very relevant. [0003] The spectral efficiency of optical signals can be increased, for example, by multi-level modulation, polarization multiplexing, orthogonal frequency multiplexing, or combinations thereof. However, the complexity of the system increases significantly with the modulation. [0004] When multilevel modulation formats and polarization multiplexing are chosen to increase the spectral efficiency (SE) of the transmission system, the next step is Orthogonal Frequency Division Modulation (OFDM), which doubles the SE ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/20H04L27/26
CPCH04L27/2697H04B10/27H04L27/2628H04L27/2096H04L27/2634
Inventor O.盖特L.科尔霍B.斯平勒N.哈尼克E-D.施密特
Owner XIEON NETWORKS SARL