论文标题
适用于定位的毫米波通信系统的稳健波束形成
Robust Beamforming for Localization-Aided Millimeter Wave Communication Systems
论文作者
论文摘要
在这封信中，我们研究了与定位辅助毫米波（MMWave）通信系统的强大波束形成问题。为了解决这个问题，我们提出了一种新颖的限制和放松方法（R＆R）方法。提出的R＆R方法旨在最大程度地减少总发射功率，而定位误差则遵循高斯分布。具体而言，在R＆R的限制阶段，概率约束通过使用Bernsteintype不等式将其转化为确定性形式。在R＆R的放松阶段，非凸优化问题通过使用半芬特弛豫（SDR）和一阶泰勒膨胀方法将非凸优化问题重新制定为凸半际计划（SDP）。据我们所知，我们首先考虑定位误差分布对渠道状态信息（CSI）的影响，这进一步影响了数据速率。数值结果列出了沟通和定位之间的波束形成的权衡。
In this letter, we investigate a robust beamforming problem for localization-aided millimeter wave (mmWave) communication systems. To handle this problem, we propose a novel restriction and relaxation (R&R) method. The proposed R&R method aims at minimizing the total transmit power while the positioning error follows a Gaussian distribution. Specifically, in the restriction phase of R&R, the probabilistic constraint is transformed into the deterministic form by using the Bernsteintype inequality. In the relaxation phase of R&R, the non-convex optimization problem is reformulated into a convex semidefinite program (SDP) by using semidefinite relaxation (SDR) and firstorder Taylor expansion methods. To the best of our knowledge, we first consider the impact of the distribution of the positioning error on the channel state information (CSI), which further influences the data rate. Numerical results present the trade-off of the beamforming between the communication and positioning.
