Name
Abstract | ||
|---|---|---|
This paper studies the physical-layer multicasting design for downstream G.fast digital subscriber line (DSL) transmission, which corresponds to a multi-user multi-tone (i.e., multi-carrier) scenario. The design goal is to maximize the weighted-sum-group-rate (WSGR) under per-line power constraints. First, as an information-theoretic upper bound, full-rank precoding-based multicasting is considered with joint channel coding across tones. For a single multicast group, this problem corresponds to a non-linear convex semidefinite program (SDP), which is coupled across tones. To reduce the computational complexity, a Lagrange dual decomposition method is developed. This approach is then extended toward multiple multicast groups based on difference-of-convex (DC) programming Furthermore, a practical multicasting scheme is considered based on rank-one single-stream precoding and independent per-tone channel coding. For this case, instead of relying on computationally complex semidefinite relaxation, a successive convex approximation-based trust-region algorithm is developed. Finally, the simulations of a G.fast cable binder show that the practical multicasting scheme operates close to the information-theoretic multicasting upper bound. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/ACCESS.2019.2928451 | IEEE ACCESS |
Keywords | DocType | Volume |
G.fast, dynamic spectrum management, physical-layer multicasting, rank-one precoding | Journal | 7 |
ISSN | Citations | PageRank |
2169-3536 | 0 | 0.34 |
References | Authors | |
0 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wouter Lanneer | 1 | 6 | 3.28 |
| Y. F. Liu | 2 | 454 | 30.59 |
| Wei Yu | 3 | 6173 | 537.26 |
| Marc Moonen | 4 | 3673 | 326.91 |