论文标题
宽带大型MIMO的新型收发器设计，以最小化梁
Novel Transceiver Design in Wideband Massive MIMO for Beam Squint Minimization
论文作者
论文摘要
当在大量多输入多输出（MMIMO）系统上使用超宽带（UWB）信号传导时，每个阵列元件处的电磁波会导致额外的传播延迟延迟，可与符号持续时间相当（或大于）符号持续时间，从而在梁方向上产生一个被称为梁斜纹的梁方向的移位。横梁斜视问题降低了阵列的增益并降低了系统容量。这封信提出了一种基于镜头天线亚阵列（LAS）和模拟子带滤波器的新型收发器设计，以补偿梁的斜视效果。尤其是，提出的设计旨在将UWB信号分为窄带梁，并用简化的基于详尽的搜索的预编码来控制它们，以将梁角度与目标方向保持一致。根据光束增益，复杂性，功耗和容量来分析该设计，表明与无偿光束斜视问题的常规系统相对于传统系统的性能提高。
When using ultra-wideband (UWB) signaling on massive multiple-input multiple-output (mMIMO) systems, the electromagnetic wave at each array element incurs an extra propagation delay comparable to (or larger than) the symbol duration, producing a shift in beam direction known as beam squint. The beam squinting problem degrades the array gain and reduces the system capacity. This letter proposes a novel transceiver design based on lens antenna subarray (LAS) and analog subband filters to compensate for the beam squinting effect. In particular, the proposed design aims to divide the UWB signal into narrowband beams and control them with a simplified exhaustive search-based precoding that is proposed to align the beam angle to the target direction. The design is analyzed in terms of beam gain, complexity, power consumption, and capacity, demonstrating significant performance enhancement with respect to the conventional system with uncompensated beam squinting problem.
