List of Articles Power allocation Open Access Article Abstract Page Full-Text 1 - An OFDM-DCSK based Approach for D2D Emergency Communications Majid Mobini Open Access Article Abstract Page Full-Text 2 - Optimal Power Allocation for CR Networks with Direct and AF Relay-Aided Transmissions anahita Pakdelian Rouhollah Aghajani Open Access Article Abstract Page Full-Text 3 - Power Allocation for Cognitive Relay System over Rayleigh Fading Channels Rouhollah Aghajani Reza Saadat Mohammad Reza Aref