%A Y Wang
%A Y Wen
%A A Li
%A X Hu
%A C Masouros
%T Intelligent Block-Level Interference Exploitation Beamforming Design: An ADMM Approach
%B Proceedings of the IEEE Wireless Communications and Networking Conference (WCNC) 2024
%P 1-6
%D 2024
%I Institute of Electrical and Electronics Engineers (IEEE)
%L discovery10197225
%K MIMO, constructive interference (CI), blocklevel beamforming (BLB), quadratic programming (QP) optimization, alternating direction method of multipliers (ADMM)
%J IEEE Wireless Communications and Networking Conference, WCNC
%X We study constructive interference based block-level beamforming (CI-BLB) in the downlink of multi-user multiple-input single-output (MU-MISO) systems. CI-BLB achieves im-proved performance over the traditional CI-based symbol-level beamforming (CI-SLB) method, because of its more intelligent power allocation scheme over the considered block of symbol slots. In this paper, we design a low-complexity algorithm based on the alternating direction method of multipliers (ADMM) framework, which can efficiently solve QP problems. We analyze the convergence and complexity of the proposed algorithm. Nu-merical results validate the optimality of the proposed algorithm, and further show that the proposed algorithm offers a flexible performance-complexity tradeoff by limiting the maximum num-ber of iterations, which motivates the use of CI - BLB in practical wireless systems.
%C Dubai, United Arab Emirates
%O This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.