A centrally managed dynamic spectrum management algorithm for digital subscriber line systems. (English) Zbl 1188.68080
Sarbazi-Azad, Hamid (ed.) et al., Advances in computer science and engineering. 13th international CSI computer conference, CSICC 2008, Kish Island, Iran, March 9–11, 2008. Revised selected papers. Berlin: Springer (ISBN 978-3-540-89984-6/pbk; 978-3-540-89985-3/ebook). Communications in Computer and Information Science 6, 501-508 (2008).
Summary: This paper presents a centrally managed scheme of combined crosstalk cancellation and multiuser power control for minimizing crosstalk degradation effects in multiuser digital subscriber line systems. Exploiting the frequency selective nature of the heavily unbalanced crosstalk channel, the crosstalk cancellation is carried out on the selected tones in order to reduce complexity. Multiuser power control is implemented centrally through Spectrum Management Center that knows the channel gains and noise power spectral density for all users. Simulation results show that the proposed algorithm considerably enlarges the data rate region when applied to very high speed digital subscriber lines upstream transmission.
For the entire collection see [Zbl 1154.68025].
For the entire collection see [Zbl 1154.68025].
MSC:
| 68M15 | Reliability, testing and fault tolerance of networks and computer systems |
| 68W05 | Nonnumerical algorithms |
Keywords:
digital subscriber line; multiuser power allocation and control; waterfilling; multiuser detection and crosstalk cancellationReferences:
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