In recent years, the use of massive multiple-input multiple-output (MIMO) systems and higher
frequency bands for next-generation urban rail transportation systems has emerged as an …

In 5G wireless communication estimation, of downlink channel with orthogonal frequency
division multiplexing (OFDM) integrated with multiple input multiple output (MIMO) is a …

Narrowband Internet of Things (NB-IoT) systems were specified by 3GPP in release 13 as a
low power wide area network (LPWAN) technology to operate with a very narrow bandwidth …

Channel estimation is a challenging and timely issue for the 3rd Generation Partnership
Project (3GPP) standardized low power wide-area network technology named narrowband …

Using the orthogonal frequency division multiplexing (OFDM) technique, a multiple-input
multiple-output (MIMO) system can provide high spectral efficiency and high data …

Single-tone and multi-tone transmissions in the narrowband Internet of Things (NB-IoT)
uplink system can be accomplished by employing different orthogonal basis. In this paper …

In this paper, new schemes have been proposed for the estimation of the additive white
Gaussian noise (AWGN) channel with intersymbol interference (ISI) in an iterative …

Data transfer in a wireless channel environment is plagued by numerous security issues and
power transmission loss. Channel state information is crucial to attaining the performance …

One of the most important parameters in the performance of wireless communication
systems is the channel estimation. However, apart from the usual OFDM modes, there are …

In multiple-input multiple-output communications, channel estimation is paramount to keep
base stations and users on track. This paper proposes a novel PCA-based-principal …