A Computer-aided Solution to Find All Feasible Schemes of Cyclic Interference Alignment for Propagation-Delay based X Channels

摘要

To obtain a full picture of potential applications forpropagation-delay based X channels, it is important to obtain all feasibleschemes of cyclic interference alignment including the encoder, channelinstance, and decoder. However, when the dimension goes larger, theoreticalanalysis about this issue will become tedious and even impossible. Inthis letter, we propose a computer-aided solution by searching the channelspace and the scheduling space, which can find all feasible schemes indetails. Examples are given for some typical X channels. Computationalcomplexity is further analyzed.