论文标题
用于合作MMWave MIMO系统的用户协会和混合边界设计设计
User Association and Hybrid Beamforming Designs for Cooperative mmWave MIMO Systems
论文作者
论文摘要
混合模拟和数字波束形成已成为毫米波(MMWave)的关键促成技术,因为它可以平衡系统性能和硬件效率之间的权衡取舍。由于中央控制的强大能力,合作网络具有提高MMWave通信频谱效率的巨大潜力。在本文中,我们考虑合作MMWave MIMO系统,并为三种典型的混合式构造体系结构提出了用户协会和混合边界设计算法。合作网络的中央处理单元(CPU)首先匹配基站(BSS)和用户的服务对。然后,提出了一种迭代混合式设计算法,以最大程度地提高MMWave MIMO系统的加权可实现的总和结果性能,并具有完全连接的混合杂交式架构。此外,为固定的子阵列混合束形成架构引入了启发式模拟波束设计算法。为了进一步利用多种恒星多样性,我们还考虑了动态的子阵列结构,并为模拟波束形成设计提出了一种新型的天线设计算法。仿真结果表明,所提出的混合波束形成算法比其他现有方法实现了显着的性能改进,而动态亚阵列体系结构具有提高能源效率(EE)性能的很大优势。
Hybrid analog and digital beamforming has emerged as a key enabling technology for millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) communication systems since it can balance the trade-off between system performance and hardware efficiency. Owing to the strong ability of central control, cooperative networks show great potential to enhance the spectral efficiency of mmWave communications. In this paper, we consider cooperative mmWave MIMO systems and propose user association and hybrid beamforming design algorithms for three typical hybrid beamforming architectures. The central processing unit (CPU) of the cooperative networks first matches the service pairs of base stations (BSs) and users. Then, an iterative hybrid beamforming design algorithm is proposed to maximize the weighted achievable sum-rate performance of the mmWave MIMO system with fully connected hybrid beamforming architecture. Moreover, a heuristic analog beamforming design algorithm is introduced for the fixed subarray hybrid beamforming architecture. In an effort to further exploit multiple-antenna diversities, we also consider the dynamic subarray architecture and propose a novel antenna design algorithm for the analog beamforming design. Simulation results illustrate that the proposed hybrid beamforming algorithms achieve a significant performance improvement than other existing approaches and the dynamic subarray architecture has great advantages of improving the energy efficiency (EE) performance.