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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.

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

http://dx.doi.org/10.1016/j.phycom.2018.04.002

https://publik.tuwien.ac.at/files/publik_269695.pdf