Methods and apparatus for performing full-duplex communications using a G.hn protocol are provided. A second node of a plurality of nodes is selected, by a first node with which to engage in full-duplex communications. A first seed common to the plurality of nodes is retrieved. A search is performed for a second seed assigned to the second node. A first portion of a frame is generated for transmission using a half-duplex communications mode, wherein transmissions using the half-duplex communications mode are detectable by each of the nodes. A first group of subcarriers is loaded with the first set of phases generated using the first seed and a second group of subcarriers is loaded with the second set of phases generated using the second seed. The first portion is transmitted, in the half-duplex communications mode, from the first node using the first and second groups of subcarriers.