DoA-Aided MMSE Channel Estimation for Wireless Communication Systems

Autor:	Weißer, Franz, Turan, Nurettin, Utschick, Wolfgang
Rok vydání:	2023
Předmět:	Electrical Engineering and Systems Science - Signal Processing
Druh dokumentu:	Working Paper
Popis:	This paper investigates the combination of parametric channel estimation with minimum mean square error (MMSE) estimation. We propose a direction-of-arrival (DoA)-aided two-stage channel estimation technique that utilizes the decomposition of wireless communication channels into a line-of-sight (LoS) path and its orthogonal subspace. After estimating the channel along the dominant direction, we utilize a Gaussian mixture model to estimate the conditionally Gaussian distributed random vector, which represents the multipath propagation. The proposed two-stage estimator allows pre-computing the respective estimation filters, tremendously reducing the computational complexity. Numerical simulations with typical channel models depict the superior performance of our proposed two-stage estimation approach compared to state-of-the-art methods. Comment: Submitted to IEEE for possible publication
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.06349 Zobrazit plný text záznamu View this record from Arxiv