论文标题
大型MIMO系统具有模拟波束成形的全双工非连通通信
Full-Duplex Non-Coherent Communications for Massive MIMO Systems with Analog Beamforming
论文作者
论文摘要
在本文中，使用模拟波束成像（ABF）开发了一种新型的全双工非连锁（FD-NC）传输方案。我们建议将结构化的硕士星座用于不需要频道估计的非相关通信。然后，我们分别通过缓慢的时间变化角（AOD）和到达角度（AOA）信息来设计发射机并接收ABF。 ABF设计靶向最大化预期的信号功率，同时抑制强大的自我干扰（SI）发生在FD传输中。此外，提出的ABF技术仅需要单个传输并接收RF链来支持大型天线阵列，因此，它降低了MMIMO系统中的硬件成本/复杂性。结果表明，与半双链非固定剂（HD-NC）和HD相干方案相比，所提出的FD-NC可以很好地提高位错误率（BER）。我们还观察到，所提出的FD-NC都降低了误差地板是由于FD传输中的残留Si导致的误差地板，并且与FD相干传输相比，BER较低。
In this paper, a novel full-duplex non-coherent (FD-NC) transmission scheme is developed for massive multiple-input multiple-output (mMIMO) systems using analog beamforming (ABF). We propose to use a structured Grassmannian constellation for the non-coherent communications that does not require channel estimation. Then, we design the transmit and receive ABF via the slow time-varying angle-of-departure (AoD) and angle-of-arrival (AoA) information, respectively. The ABF design targets maximizing the intended signal power while suppressing the strong self-interference (SI) occurred in the FD transmission. Also, the proposed ABF technique only needs a single transmit and receive RF chain to support large antenna arrays, thus, it reduces hardware cost/complexity in the mMIMO systems. It is shown that the proposed FD-NC offers a great improvement in bit error rate (BER) in comparison to both half-duplex non-coherent (HD-NC) and HD coherent schemes. We also observe that the proposed FD-NC both reduces the error floor resulted from the residual SI in FD transmission, and provides lower BER compared to the FD coherent transmission.
