This paper presents two new schemes for the estimation of channels encountered in the
scenarios exhibiting frequency-selective sparse-structured channel response in uplink of …

This study investigates the deep learning (DL)-based uplink power domain non-orthogonal
multiple access (PD-NOMA) system, with a focus on channel state information (CSI) …

We propose a new framework of uplink grant-free non-orthogonal multiple access (NOMA)
composed of user activity detection, channel estimation, and data detection. Since the …

In this paper, we investigate the link level performance considering the influence of the error
vector magnitude (EVM) of a transmit signal in a downlink non-orthogonal multiple access …

Recently, non-orthogonal multiple access (NOMA) scheme has been conceived as a
promising candidate to improve the spectral efficiency in the fifth generation (5G) wireless …

Non-orthogonal multiple access (NOMA) techniques have drawn much attention for massive
connectivity, heterogeneous data traffic with ultra-low latency requirements, and ultra-high …

Non-Orthogonal Multiple Access (NOMA) schemes are being actively explored to address
some of the major challenges in 5th Generation (5G) Wireless communications. Channel …

Due to the exponential growth in the number of connected devices, the utilization of
available resources becomes challenging. To meet this demand, novel techniques with …

Non-orthogonal multiple access (NOMA) is one of candidate technologies in the next
generation radio access networks, in which the joint maximum-likelihood (JML) detector has …

Ahstract-This paper presents the development of closed-form mathematical expressions for
the exact calculation of the symbol error rate of two-User NOMA systems. These expressions …