With the growing need for Internet of things (IoT) applications, wireless communications are
facing the challenge of providing massive connectivity. However, as the number of users …

Massive capacity gain in Massive MIMO (multiple-input and multiple-output) depends on
uplink pilots sent by the users to provide up-to-date CSI (channel state information) for …

In this work, we propose a novel non-orthogonal pilot design framework to tackle the pilot
contamination problem in multi-cell massive multiple input multiple output (MIMO) systems …

Time-shifted pilot scheme can efficiency combat pilot contamination. However, when the
number of base station (BS) antennas is finite, the pilot interference due to the downlink …

In massive multi-input multi-output systems, the pilot contamination has a strong impact on
the performance. In this paper, an advanced channel estimation scheme by utilizing the …

This letter proposes a deep learning-based pilot design scheme to minimize the sum mean
square error (MSE) of channel estimation for multi-user distributed massive multiple-input …

With the rapidly increasing demand for high-speed data transmission and a growing number
of terminals, massive multiple-input multiple-output (MIMO) has been shown promising to …

Massive multiple-input multiple-output (mMIMO) and spatial multiplexing of devices are
crucial technologies to support massive connectivity. As the number of users increases, it …

This paper investigates the performance of downlink (DL) pilot-based training to estimate the
effective channel in user-centric cell-free massive multiple-input multiple-output (MIMO) …

Next generation wireless promises high data rate using advanced MIMO techniques. Large-
Scale antenna system, or massive MIMO, has been proposed as a strong candidate for …