Transmit Beampattern Synthesis for Planar Array with One-bit DACs

In this paper, the problem of transmit beampattern synthesis for planar array, which deploys one-bit digital-to-analog converters (DACs), is investigated. By properly designing the emitted signal quantized by one-bit DACs, the synthesized transmit beampattern is able to approximate a desired beampattern closely. However, the formulated problem is highly nonconvex due to the quartic objective and the discrete binary constraint. To tackle this problem, we first reformulate it into quadratic objective with interval constraint. On this basis, the alternating direction multiplier method (ADMM) framework is used to solve the resulting quadratic program (QP) problem. Simulation results will demonstrate the effectiveness of our method.