Challenges and Solutions in Vectored DSL
Autor: | Fang Liming, James Chou, Raphael Cendrillon, Dong Wei, Guozhu Long |
---|---|
Rok vydání: | 2010 |
Předmět: | |
Zdroj: | Access Networks ISBN: 9783642116636 AccessNets |
Popis: | VDSL2 is the latest generation of DSL technology, and aims to provide data-rates in excess of 100 Mbps to the home to enable next generation, high bandwidth services. Such high data-rates are achieved by transmitting at frequencies up to 30 MHz. Unfortunately transmitting at such high frequencies over twisted-pair leads to strong crosstalk between the lines. To address this issue crosstalk cancellation and precoding were developed, techniques known collectively as vectoring. The ITU is now finalizing the first version of the G.vector standard which specifies how vectoring should be implemented. This paper presents some of the more interesting problems that have been encountered in the development of this standard, and shows how creative solutions, which take advantage of the unique characteristics of the DSL environment, have helped develop vectoring from theory into a practical technology that will soon be ready for commercial deployment. |
Databáze: | OpenAIRE |
Externí odkaz: |