Spectral efficiency evaluation for channel estimation techniques in massive MIMO Time Division Duplexing (TDD) system

Authors: Vương Hoàng Nam*, Nguyễn Văn Sơn


Today, a revolution in cellular network has been set in motion toward 5G. One of the key techniques for 5G is massive multiple-input multiple-output (m-MIMO) technology to achieve multiple orders of spectral and energy efficiency gains over current LTE networks. M-MIMO is a system where a base station (BS) with a large number of antennas simultaneously serve many user terminal, each having a single antenna, in the same time-frequency resource. Channel estimation is crucial for M-MIMO systems to provide significant improvement in spectral and energy efficiency. In uplink training the user sends orthogonal pilot signals that are known to the BS then the BS estimates the channel. In this paper, we study several channel estimation techniques in multi-cell massive MIMO time division duplex (TDD) systems. Simulations were performed for several channel estimation techniques in order to identify the best spectral efficiency.


Spectral Efficiency, Channel Estimation Techniques, Massive MIMO TDD, time-frequency resource.
Pages : 15-20

Related Articles:

Authors : Vũ Thị Hiền*, Nguyễn Ngọc Tuấn, Hoàng Văn Lựu, Vũ Đình Hoàng*
Authors : Phùng Thị Vĩ*, Nguyễn Thuý Ngọc, Trương Thị Kim, Nguyễn Thị Quỳnh, Nguyễn Thị Mai, Dương Hồng Anh, Phạm Hùng Việt
Authors : Nguyễn Thị Tuyết Mai*, Nguyễn Lê Huy, Claire Mangeney, Nordin Felidj
Authors : Phạm Văn Tuấn*, Phạm Hùng Phi, Nguyễn Thanh Sơn, Nguyễn Tùng Lâm