TDD (Time Division Duplex) is one of the two duplex modes. TD-SCDMA (Time Division
Synchronous CDMA) is the first TDD-based cellular mobile system which is commercialized …

The concept of deploying a large number of antennas at the base station, often called
massive multiple-input multiple-output (MIMO), has drawn considerable interest because of …

Millimeter wave (mmWave) communication is the only viable approach for high bandwidth
connected vehicles exchanging raw sensor data. A main challenge for mmWave in …

This paper addresses the problem of uplink (UL) and downlink (DL) channel estimation in
frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems …

This paper considers pilot-based channel estimation in large-scale multiple-input multiple-
output (MIMO) communication systems, also known as “massive MIMO,” where there are …

We propose a novel method for massive multiple-input multiple-output (massive MIMO) in
frequency division duplexing (FDD) systems. Due to the large frequency separation between …

In high mobility applications of millimeter wave (mmWave) communications, eg, vehicle-to-
everything communication and next-generation cellular communication, frequent link …

Channel covariance matrix (CCM) is one critical parameter for designing the
communications systems. In this paper, a novel framework of the deep learning (DL) based …

In the design of next-generation multiuser communication systems, multiple-antenna
transmission is an essential part providing additional spatial degrees of freedom and …

Channel estimation and beam training can be a source of significant overhead in
establishing millimeter wave (mmWave) communication links, especially in high mobility …