%0 Journal Article
%A DING Han-qing
%A WANG Zhong-fang
%A XU Jin
%A ZHANG Qiu-wen
%A LIU Wei-hua
%T Closed-Form IA Solution Based on Ring-Typed Alignment Chain
%D 2021
%R 10.13190/j.jbupt.2021-023
%J Journal of Beijing University of Posts and Telecommunications
%P 48-52
%V 44
%N 6
%X To obtain the closed-form interference alignment (IA) solution for general interference networks, a novel closed-form IA solution method based on ring-typed alignment chain is proposed. Frist, the IA precoding matrices are decomposed into several sub-matrices, and the ring-typed alignment chains are elaborately designed by compressing the interference subspace as much as possible. Then, based on the ring-typed alignment chains, the IA precoding matrices and filtering matrices are computed by the matrix theory. Simulation results verify that the proposed method achieves high sum-rate performance with low computational complexity.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2021-023