Diversity-Multiplexing Tradeoff of the Two-User X-Channel with Two Antennas

On-off Switched Interference Alignment for Diversity Multiplexing Tradeoff Improvement in the 2-User X-Network With Two Antennas

“…Then, the received signal at receiver 1 becomes y [1] =H [11] V [11] U [1] s [11] +H [11] V [21] U [2] s [21] +H [12] V [12] U [1] s [12] +H [12] V [22] U [2] s [22] +z [1] = c [11]H [11] (H [21] ) −1 U [1] s [11] +c [12]H [12] (H [22] ) −1 U [1] s [12] + U [2] (c [21] s [21] + c [22] s [22] ) +z [1] and the corresponding 6 × 6 effective channel for receiver 1 can be rewritten as…”

“…However, diversity schemes guaranteeing optimal DoF in interference channels have not been sufficiently focused on, although it is a natural viewpoint shift from multiplexing to diversity in communications engineering. In this context, contrary to the works that highlight achievable Parts of this paper have been submitted to IEEE International Conference on Communications (ICC), Shanghai, China, May, 2019 [1].…”