论文标题
新无线电中的两端口解调参考信号的MMSE通道估计
MMSE Channel Estimation for Two-Port Demodulation Reference Signals in New Radio
论文作者
论文摘要
最近在新无线电（NR）中采用了两端口解调参考信号（DMR）。在本文中，我们首先提出了具有完整先验知识（F-MMSE）的最小均方误差（MMSE）方案，以实现NR中两端口DMR的通道估计。当将两个端口分配给不同的用户时，一个用户的全部先验知识并不容易获得。然后，我们提出了具有部分先验知识（P-MMSE）的MMSE方案。最后，数值结果表明，所提出的方案达到了令人满意的通道估计性能。此外，对于均方根误差和位误差比指标，与经典离散傅立叶转换基于基于基于的传统通道估计相比，所提出的方案可以实现更好的性能。特别是，与F-MMSE方案相比，P-MMSE方案通过少量的先验知识提供了几乎相同的性能。
Two-port demodulation reference signals (DMRS) have been employed in new radio (NR) recently. In this paper, we firstly propose a minimum mean square error (MMSE) scheme with full priori knowledge (F-MMSE) to achieve the channel estimation of two-port DMRS in NR. When the two ports are assigned to different users, the full priori knowledge of two ports is not easy to be obtained for one user. Then, we present a MMSE scheme with partial priori knowledge (P-MMSE). Finally, numerical results show that the proposed schemes achieve satisfactory channel estimation performance. Moreover, for both mean square error and bit error ratio metrics, the proposed schemes can achieve better performance compared with the classical discrete Fourier transform based channel estimation. Particularly, P-MMSE scheme delivers almost the same performance compared with F-MMSE scheme by a small amount of prior knowledge.
