Name
Abstract | ||
|---|---|---|
In this paper, we investigate joint level 2 and 3 dynamic spectrum management (joint DSM 2/3) for downstream (DS) DSL. We consider a DS scenario in which users are divided into a few separate groups, where vector encoding based signal coordination can be applied in each group and spectrum coordination is possible for all users. This can be seen as a mixed interference/broadcast channel (IF/BC) scenario. In order to obtain the optimal transmitter structure, we develop a generalized duality between the vector broadcast and multiple-access channel (MAC) for scenarios in which partial signal coordination is available among users. This theory together with optimal spectrum balancing (OSB) is exploited to calculate the jointly optimal filters and transmit powers for non-linear vector dirty paper coding structures (in the form of Tomlinson-Harashima precoder (THP)) in the groups. The proposed scheme is compared to several other joint DSM 2/3 algorithms for DS DSL. Simulation results show that the proposed scheme (referred to as the IF/BC-OSB algorithm) achieves considerably higher bit rates than the other schemes. IF/BC-OSB encompasses the earlier developed BC-OSB algorithm as a special case. A simplified version of IF/BC-OSB avoiding exhaustive search with near-optimal performance is also proposed. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TCOMM.2012.072612.110526 | IEEE Transactions on Communications |
Keywords | Field | DocType |
broadcast channels,channel coding,digital subscriber lines,filtering theory,interference (signal),multi-access systems,nonlinear codes,precoding,radio spectrum management,BC-OSB algorithm,DS DSL,IF-BC scenario,MAC,THP,Tomlinson-Harashima precoder,downstream DSL,joint DSM 2/3 dynamic spectrum management,joint level 2 dynamic spectrum management,jointly optimal filters,mixed interference-broadcast channel,nonlinear vector dirty paper coding structures,optimal spectrum balancing,optimal transmitter structure,partial signal coordination,spectrum coordination,vector broadcast-multiple-access channel,vector encoding based signal coordination,BC-MAC duality,Digital subscriber line (DSL),Tomlinson-Harashima pre-coder (THP),broadcast channel (BC),dirty paper coding (DPC),dynamic spectrum management (DSM),interference channel,resource allocation,vectoring | Dirty paper coding,Dynamic spectrum management,Computer science,Digital subscriber line,Signal-to-noise ratio,Communication channel,Electronic engineering,Communication complexity,Decoding methods,Precoding | Journal |
Volume | Issue | ISSN |
60 | 10 | 0090-6778 |
Citations | PageRank | References |
11 | 0.59 | 31 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Amir R. Forouzan | 1 | 91 | 11.24 |
| Marc Moonen | 2 | 3673 | 326.91 |
| J. Maes | 3 | 223 | 23.33 |
| Mamoun Guenach | 4 | 168 | 26.38 |