| 摘要 |
A semi-distributed method of managing the spectral power over multiple digital subscriber line communication loops (LP 1 , LP 2 ) is disclosed. A central office (CO) DSL transceiver ( 10 ) and a remote terminal (RT) DSL transceiver ( 15 ) communicate with customer premises equipment (CPE) ( 12 <SUB>1</SUB> , 12 <SUB>2</SUB>) over separate twisted-pair wire loops (LP 1 , LP 2 ) that are in sufficient physical proximity with one another as to suffer from crosstalk. A network management center (NMC) ( 20 ) initializes a price parameter, which is used by the CO ( 10 ) and RT ( 15 ) in independent maximization problems. The CO ( 10 ) derives a maximum tolerable power spectral density for the RT ( 15 ) that permits the CO ( 10 ) to reach a target data rate, and the RT ( 15 ) derives an actual power spectral density that maximizes its data rate, each using the price parameter. The NMC ( 20 ) compares the actual RT power spectral density to the tolerable RT power spectral density, and adjusts the price parameter accordingly, with the process repeating until convergence. As a result, the RT data rate is maximized to a level that still permits the CO ( 10 ) to reach its target data rate, thus maximizing the overall network data rate.
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