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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lafata, P. Vodráz̆ka, J. |
| Copyright Year | 2010 |
| Description | Author affiliation: Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Telecommunication Engineering (Lafata, P.; Vodráz̆ka, J.) |
| Abstract | Crosstalk, and mainly far-end crosstalk (FEXT), is one the most serious source of disturbance in present xDSL lines (Digital Subscriber Line). It mostly limits the maximum achievable transmission speeds. It is necessary to implement new transmission techniques and modulations, such as VDMT modulation (Vectored Discrete Multi-tone Modulation), for reducing the crosstalk influence. However, the reduction of crosstalk by VDMT modulation is not possible in present systems due to its overall complexity and demands on computational units in DSLAMs. This paper presents the possibility of using space selection of disturbing sources among the metallic cable, which would allow the use of VDMT modulation only for a limited number of the most disturbing pairs. The new far-end crosstalk model, called advanced FEXT model, which is based on cable internal structure and parameters, is proposed here. The presented generator of crosstalk transmission functions is based on advanced FEXT model and provides accurate and realistic simulations and calculations of crosstalk characteristics. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 301531 |
| Page Count | 4 |
| File Format | |
| ISBN | 9788070438657 |
| ISSN | 18037232 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-09-08 |
| Publisher Place | Czech Republic |
| Access Restriction | Subscribed |
| Rights Holder | Univer of Western Bohemia |
| Subject Keyword | Frequency modulation Crosstalk Generators Frequency measurement Mathematical model DSL |
| Content Type | Text |
| Resource Type | Article |
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