arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.12660cs.ITeess.SPmath.IT
收藏

大规模MIMO系统的全双工非相干模拟波束形成通信

Full-Duplex Non-Coherent Communications for Massive MIMO Systems with Analog Beamforming

Asil Koc, Ahmed Masmoudi, Tho Le-Ngoc

摘要:

针对大规模多输入多输出(mMIMO)系统,提出了一种基于模拟波束形成(ABF)的全双工非相干(FD-NC)传输方案。我们建议使用结构化的格拉斯曼星座的非相干通信,不需要信道估计。然后,我们设计了发送和接收ABF通过慢时变的出发角(AoD)和到达角(AoA)信息,分别。ABF设计的目标是最大化预期的信号功率,同时抑制FD传输中发生的强自干扰(SI)。此外,所提出的ABF技术仅需要单个发射和接收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/复杂度。结果表明,建议FD-NC提供了一个很大的改善比特出错率(BER)相比,半双工非相干(HD-NC)和HD相干计划。我们还观察到,所提出的FD-NC既减少了错误平层所造成的残留SI在FD传输,并提供较低的BER相比,FD相干传输。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑