Spectral Compatibility between In-Home and Access Technologies

While in-home and access technologies are located at different places in the end-to-end communication chain, they have been shown to mutually interfere. In this contribution, we quantify the mutual impact of an in-home network and a Digital Subscriber Line access link. Both regular and vectored VDSL2 links are considered. For newer in-home technologies, which are able to use a large bandwidth, the access network becomes the bottleneck in the end-to-end communication. In this case, we recommend removing the interference from the in-hme distribution network to the access network by shaping the transmit spectrum of the in-home distribution network. We show that this does not impact the performance of the end-to-end communication link. For older in-home technologies, which use a lower bandwidth, the attainable data rate of the in-home and access networks should be balanced by adapting the transmit power spectral density on the overlapping frequency band.