论文标题
用于毫米波MIMO集成感应和通信的混合波束形成
Hybrid Beamforming for Millimeter Wave MIMO Integrated Sensing and Communications
论文作者
论文摘要
在这封信中，我们考虑了毫米波（MMWave）MIMO集成感应和通信（ISAC）的混合波束形成。我们设计了双重功能雷达通信（DFRC）基站（BS）的发射光束，旨在接近客观雷达梁图案，但受信号对交流用户的干扰加值比（SINR）的约束，以及DFRC BS的总传输功率。为了为光束设计问题提供额外的自由度，我们将相位向量引入了客观梁模式，并提出了一种交替的最小化方法，以迭代优化发射光束和相位矢量，该方法分别涉及二阶锥形编程和限制最小平方的估计。然后，基于设计的发射光束，我们确定仍使用交替的最小化方法，确定受MMWave MIMO中相位变速器网络的恒定信封约束的约束。仿真结果表明，在通信使用者的SINR约束下，较大的天线阵列可以实现更好的雷达梁质量。
In this letter, we consider hybrid beamforming for millimeter wave (mmWave) MIMO integrated sensing and communications (ISAC). We design the transmit beam of a dual-functional radar-communication (DFRC) base station (BS), aiming at approaching the objective radar beam pattern, subject to the constraints of the signal to interference-plus-noise ratio (SINR) of communication users and total transmission power of the DFRC BS. To provide additional degree of freedom for the beam design problem, we introduce a phase vector to the objective beam pattern and propose an alternating minimization method to iteratively optimize the transmit beam and the phase vector, which involves second-order cone programming and constrained least squared estimation, respectively. Then based on the designed transmit beam, we determine the analog beamformer and digital beamformer subject to the constant envelop constraint of phase shifter network in mmWave MIMO, still using the alternating minimization method. Simulation results show that under the same SINR constraint of communication users, larger antenna array can achieve better radar beam quality.
