%0 Journal Article
%A CHEN Xue-yan
%A GUO Li
%A LIN Jia-ru
%T Robust Distributed Beamforming in Cognitive Two-Way Relay Networks
%D 2014
%R 10.13190/j.jbupt.2014.06.019
%J Journal of Beijing University of Posts and Telecommunications
%P 91-94
%V 37
%N 6
%X <p>A distributed Robust relay beamforming design in cognitive two-way relay networks by considering imperfect channel state information was proposed to improve the minimum worst-case signal-to- interference-plus-noise ratio (SINR) of two cognitive users, satisfying a total relay power constrains and keeping the interference at primary user receiver below an acceptable threshold. Based on S-Procedure, the non-convex problem is transformed into a convex feasibility problem by relaxing the rank constrains, which can be solved efficiently. Simulations show that the proposed design can satisfy both total relay power constrains and interference temperature constrains, and verify the effectiveness of the proposed method as well in comparison to the non-Robust relay beamforming technique.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2014.06.019