论文标题
PDRS：一种快速的非题方式，用于大量MIMO中的大量无赠款访问
PDRS: A Fast Non-iterative Scheme for Massive Grant-free Access in Massive MIMO
论文作者
论文摘要
没有赠款的多输入多输出（MIMO）通常采用非正交飞行员来进行联合用户检测和通道估计。但是，现有的方法太复杂了，无法在大规模的MIMO中获得无赠款的访问。这封信提出了试点检测参考信号（PDR），以大大降低复杂性。在PDRS方案中，无需迭代。还提出了直接的重量估计来计算无通道估计的权重。合并后，使用PDRS恢复错误来确定试验活动。仿真结果表明，所提出的无授予方案的表现良好，复杂性降低了数量级。
Grant-free multiple-input multiple-output (MIMO) usually employs non-orthogonal pilots for joint user detection and channel estimation. However, existing methods are too complex for massive grant-free access in massive MIMO. This letter proposes pilot detection reference signal (PDRS) to greatly reduce the complexity. In PDRS scheme, no iteration is required. Direct weight estimation is also proposed to calculate combining weights without channel estimation. After combining, PDRS recovery errors are used to decide the pilot activity. The simulation results show that the proposed grant-free scheme performs good with a complexity reduced by orders of magnitude.
