Publications in Scientific Journals:

S. Drakulic, M. Wolkerstorfer, D. Statovci:
"Coexistence in fourth generation digital subscriber lines: Experiment, modeling, and simulation results";
Physical Communication, 28 (2018), 28; 154 - 165.

English abstract:
The deployment of fourth generation digital subscriber line (DSL) technology (``G.fast´´) will be gradual and it may therefore share the cable infrastructure with legacy DSL technologies such as Very high speed DSL transceivers 2 (VDSL2). We perform experiments on coexistence of G.fast with legacy VDSL2, highlighting the practical relevance of out-of-band leakage and aliasing. Furthermore, the differences in transmission parameters (e.g., carrier width and sampling rate) and asynchronous transmission results in inter-carrier
and inter-symbol interference (ICSI). Previous work on modeling ICSI in the communication field focused on modeling only a subset of these effects. Hence, we analytically derive a simplified ICSI model, which
notably includes the effects of aliasing,leakage, and worst-case symbol misalignment. Our results partially based on simulations show that a) neglecting ICSI potentially leads to significant bit-rate overestimation (e.g., 18% in G.fast rates); and b) a G.fast start frequency of approximately 23 MHz may provide sufficient spectral separation with VDSL2 profile 17a transceivers.

Subscriber loops, Broadband communication, Intersymbol interference, DSL, G.fast, VDSL2

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Electronic version of the publication:

Created from the Publication Database of the Vienna University of Technology.