新无线电中双端口解调参考信号的MMSE信道估计
MMSE Channel Estimation for Two-Port Demodulation Reference Signals in New Radio
摘要：
双端口解调参考信号（DMRS）最近已经在新无线电（NR）中被采用。本文首先提出了一种基于全先验知识的最小均方误差（F-MMSE）方法来实现NR中双端口DMRS的信道估计。当两个端口被分配给不同的用户时，对于一个用户，不容易获得两个端口的全部先验知识。然后，我们提出了一个MMSE方案与部分先验知识（P-MMSE）。最后，数值结果表明，所提出的方案取得了令人满意的信道估计性能。此外，对于均方误差和误比特率度量，所提出的方案可以实现更好的性能相比，经典的基于离散傅里叶变换的信道估计。特别地，P-MMSE方案提供了几乎相同的性能相比，F-MMSE方案通过少量的先验知识。
英文摘要：
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.
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。
