发明名称 |
DYNAMIC TARGET MARGIN ADAPTATION FOR DSL TRANSMISSION LINES |
摘要 |
<p>A method and arrangement is proposed for adaptively generating a target noise margin for use on a DSL transmission line. The method includes determining a first quantity representing a current noise power on the line using line parameter data relating to the transmission performance of the line, determining a second quantity representing a worst-case noise power on said line using previously obtained values of the line parameter data, calculating the difference between the first and second quantities to generate a difference value, setting a target noise margin as at least equal to said difference value, and providing the target noise margin for use on the line upon initialisation of the line. In a preferred embodiment, the line parameter data is the bit loading on the line and the first and second quantities are values of the average signal-to-noise ratio on the line derived from the bit loading data.</p> |
申请公布号 |
EP2697909(A1) |
申请公布日期 |
2014.02.19 |
申请号 |
EP20110714494 |
申请日期 |
2011.04.12 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
LINS DE MEDEIROS, EDUARDO;DORTSCHY, BORIS;KLAUTAU, ALDEBARO;MONTEIRO, MARCIO MURILO CONTE |
分类号 |
H04B3/32;H04L5/00 |
主分类号 |
H04B3/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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