2nd International ICST Conference on Access Networks

Research Article

Spectrum Balancing for DSL with Restrictions on Maximum Transmit PSD

  • @INPROCEEDINGS{10.1109/ACCESSNETS.2007.4447105,
        author={Driton Statovci and Tomas Nordstr\o{}m and Rickard Nilsson},
        title={Spectrum Balancing for DSL with Restrictions on Maximum Transmit PSD},
        proceedings={2nd International ICST Conference on Access Networks},
        publisher={IEEE},
        proceedings_a={ACCESSNETS},
        year={2008},
        month={2},
        keywords={Bit rate  Constraint optimization  Convergence  DSL  Frequency  Iterative algorithms  Iterative methods  Optimization methods  Standardization  Visualization},
        doi={10.1109/ACCESSNETS.2007.4447105}
    }
    
  • Driton Statovci
    Tomas Nordström
    Rickard Nilsson
    Year: 2008
    Spectrum Balancing for DSL with Restrictions on Maximum Transmit PSD
    ACCESSNETS
    IEEE
    DOI: 10.1109/ACCESSNETS.2007.4447105
Driton Statovci1,*, Tomas Nordström1,*, Rickard Nilsson1,*
  • 1: Telecommunications Research Center Vienna (ftw.), Donau-City-Straße 1, A-1220 Vienna, Austria
*Contact email: statovci@ftw.at, nordstrom@ftw.at, nilsson@ftw.at

Abstract

The importance of a power spectral density (PSD) mask restriction is often overlooked when optimizing the spectrum usage for multiuser digital subscriber lines (DSL) systems. However, by developing the optimization strategies based only on the PSD constraints (masks) we can tremendously reduce the computation complexity compared to the methods only based on the total power restriction. In this paper we introduce a maskbased spectrum balancing (MSB) algorithm and demonstrate the near optimum performance of this optimization approach. Furthermore, we show that besides standards compliance, PSD restriction is also needed to ensure the convergence of iterative spectrum balancing methods, which use dual decomposition optimization.