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Angular-Domain Selective Channel Tracking and Doppler Compensation for High-Mobility mmWave Massive MIMO by Liu, Guanying; Liu, An; Zhang, Rui; Zhao, Min-Jian is a scholarly article available to read on EtoBox.

What is Angular-Domain Selective Channel Tracking and Doppler Compensation for High-Mobility mmWave Massive MIMO about?

In this paper, we consider a mmWave massive multiple-input multiple-output (MIMO) communication system with one static base station (BS) serving a fast-moving user, both equipped with a very large array. The transmitted signal arrives at the user through multiple paths, each with a different angle of-arrival and hence Doppler frequency offset, thus resulting in a fast time-varying multipath fading MIMO channel. In order to mitigate the Doppler-induced channel aging for reduced pilot overhead, we propose a new angular-domain selective channel tracking and Doppler compensation scheme at the user side. We formulate the joint estimation of partial angular-domain channel and DFO parameters as a dynamic compressive sensing problem. Then we propose a Doppler-aware-dynamic variational Bayesian inference (DD-VBI) algorithm to solve this problem efficiently. Finally, we propose a practical DFO compensation scheme which selects the dominant paths of the fast time-varying channel for DFO compensation and thereby converts it into a slow time-varying effective channel. Compared with the existing methods, the proposed scheme can enjoy the huge array gain provided by the massive MIMO and also bala

Author

Liu, Guanying; Liu, An; Zhang, Rui; Zhao, Min-Jian

Published

2019

Language

EN