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> |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);DE MEDEIROS, EDUARDO LINS;DORTSCHY, BORIS;KLAUTAU, ALDEBARO;MONTEIRO, MARCIO MURILO CONTE |
发明人 |
DE MEDEIROS, EDUARDO LINS;DORTSCHY, BORIS;KLAUTAU, ALDEBARO;MONTEIRO, MARCIO MURILO CONTE |