Optimized Resource Allocation for Upstream Vectored DSL Systems With Zero-Forcing Generalized Decision Feedback Equalizer

@article{Chen2007OptimizedRA,
  title={Optimized Resource Allocation for Upstream Vectored DSL Systems With Zero-Forcing Generalized Decision Feedback Equalizer},
  author={Chiang-Yu Chen and Kibeom Seong and Rui Zhang and J P Cioffi},
  journal={IEEE Journal of Selected Topics in Signal Processing},
  year={2007},
  volume={1},
  pages={686-699}
}
In upstream vectored DSL systems using zero-forcing generalized decision feedback equalizers (ZF-GDFE), different decoding orders cause performance tradeoffs among the users. In this paper, these tradeoffs are characterized by formulating optimization problems with practical constraints. Lagrange dual decomposition and a two-step algorithm are used to solve the dual problems optimally with the computational complexity linear in the number of DMT tones. However, solving the tonal subproblem… CONTINUE READING