Title :
A low-complexity algorithm for joint spectrum and signal coordination in upstream DSL transmission
Author :
Tsiaflakis, Paschalis ; Moraes, Rodrigo B. ; Moonen, Marc
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Heverlee, Belgium
Abstract :
Joint spectrum and signal coordination is a promising dynamic spectrum management (DSM) technique to significantly boost data rates in vectored DSL systems. This paper presents a novel low-complexity algorithm for joint spectrum and receiver signal coordination in upstream DSL transmission. The algorithm is referred to as MAC-DSB and can be used for both a MMSE-GDFE and a linear MMSE receiver. MAC-DSB consists of an improved dual decomposition based approach with an optimal gradient algorithm for updating the dual variables and a low-complexity iterative fixed point update approach for tackling the decoupled subproblems. Huge reductions in computational complexity and good performance are validated through practical simulation results.
Keywords :
computational complexity; digital subscriber lines; gradient methods; iterative methods; radio receivers; telecommunication network management; DSM technique; MAC-DSB; MMSE-GDFE; computational complexity; dual decomposition based approach; dynamic spectrum management technique; joint spectrum; linear MMSE receiver; low-complexity algorithm; low-complexity iterative fixed point update approach; optimal gradient algorithm; receiver signal coordination; upstream DSL transmission; Digital subscriber line (DSL); dynamic spectrum management (DSM); interference cancellation; vectoring;
Conference_Titel :
Communications and Vehicular Technology in the Benelux (SCVT), 2011 18th IEEE Symposium on
Conference_Location :
Ghent
Print_ISBN :
978-1-4577-1288-3
Electronic_ISBN :
978-1-4577-1287-6
DOI :
10.1109/SCVT.2011.6101310
