Channel estimation (CE) in internet of things (IoT) systems faces challenges of low spectral
efficiency, high energy consumption, and blocked propagation paths. To address these …

The convergence of emerging technologies and consumer electronics is demanding for
higher communication quality. Reconfigurable intelligent surface (RIS) can exhibit significant …

We propose new pilot transmission protocols for acquiring channel state information (CSI) of
individual reconfigurable intelligent surface (RIS) assisted channels. Our approach …

Simultaneous acquisition of channel state information (CSI) of many devices with high
accuracy is crucial to provide the Internet-of-Things (IoT) connectivity in cellular networks. A …

To reap the benefits of reconfigurable intelligent surfaces (RIS), channel state information
(CSI) is generally required. However, CSI acquisition in RIS systems is challenging and …

The reconfigurable intelligent surface (RIS) is regarded as a promising technology for the
future networks, since it has the ability to manipulate the randomly behaving wireless …

Reconfigurable intelligent surface (RIS) consists of cost-effective passive elements which
can be utilized in different scenarios in next-generation wireless communication. Deep …

In this paper, channel estimation of an active intelligent reflecting surface (IRS) aided uplink
Internet of Things (IoT) network is investigated. Firstly, the least square (LS) estimators for …

The Internet of Things (IoT) is gaining immense popularity in executing automation activities
via wireless connectivity in the modern era. The IoT networks are designed using mostly low …

Efficient and low complexity channel estimation has become the prime concern in
Narrowband Internet of Things (NB-IoT) receiver performance. The maximum likelihood …