Large-scale multi-cell multiuser multiple-input multiple-output (LS-MIMO) systems can
greatly increase the spectral efficiency. But the performance of these systems is deteriorated …

Pilot reuse in the multi-cell massive multi-input multi-output system is investigated where
user groups with different priorities exist. Recent investigation on pilot reuse has revealed …

Although the benefits of precoding and combining data signals are widely recognized, the
potential of these techniques for pilot transmission is not fully understood. This is particularly …

We investigate pilot contamination problem for very large MIMO multi-cell TDD system. The
asymptotic sum rate of two typical precoding schemes, ie, the single-cell zero forcing (ZF) …

This paper concerns the uplink of multicell multiuser multiple-input multiple-output (MIMO)
systems. To tackle the effect of pilot contamination that is generally viewed as a bottleneck in …

For massive multiuser multiple input multiple output (MIMO)(MU-MIMO) systems, pilot
contamination (PC) and data interference (DI) are two main factors that affect the accuracy of …

In a multi-user multi-cell massive Multiple Input Multiple Output (MIMO) system, pilot
contamination is a challenge of channel estimation. Traditional channel gain estimation …

In this work, we investigate the pilot contamination problem in multi-cell massive multi-input
multi-output (MIMO) systems. The conventional approaches to address pilot contamination …

This letter proposes a partial-time-shifted pilot scheme to find a better tradeoff between the
user accommodation and orthogonality of pilots for the massive multiple-input multiple …

Salient characteristics of a wireless communication system deploying a great number of
antennas at the base station (BS), namely a massive MIMO system, are investigated in this …