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

fYear

2011

fDate

22-23 Nov. 2011

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/SCVT.2011.6101310

Filename

6101310