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摘要
A joint design of the mechanical and the electrical tilts is proposed for millimeter-wave beamspace multiple-input multiple-output systems. Based on the correlation property of the array steering vector, the asymptotic sum rate is derived. In order to maximize the sum rate, the mechanical tilt is designed to maximize the expectations of the antenna gains. Moreover, the electrical tilt is dynamically adjusted to optimize the instantaneous antenna gains. As a result, the proposed joint design of two tilts can achieve higher sum rate than the designs of one tilt, which is confirmed by the simulation results.
- 出版日期2017-6
- 单位杭州电子科技大学
