1 research outputs found
Beam Selection for MmWave Massive MIMO Systems Under Hybrid Transceiver Architecture
Hybrid analog/digital precoding is a promising technology to cut down
hardware cost in massive multi-input multi-output (MIMO) systems at millimeter
wave frequencies. In this letter, we propose a joint beam selection scheme for
analog domain precoding under discrete lens array. By considering channel
correlation among users, the proposed scheme is able to avoid inter-user
interference and maximize system sum rate. Moreover, a bio-inspired ant colony
optimization-based algorithm is proposed to obtain a near-optimal solution with
dramatically reduced computational complexity. Finally, simulations show the
advantages of the proposed scheme in improving system sum rate.Comment: 4 pages, 4 figures, IEEE Communications Letter