This paper investigates the coexistence of two important enabling techniques for future wireless networks, non-orthogonal multiple-access (NOMA) and wireless caching, and we show that the use of NOMA ensures that the two caching phases, content pushing and content delivery, can be more effectively carried out, compared to the conventional orthogonal multiple-access (OMA) based case. Two NOMA ca...

Reconfigurable intelligent surface (RIS)-assisted power-domain non-orthogonal multiple access (PD-NOMA) system has emerged as a revolutionary technology to enhance the spectrum efficiency for future wireless networks. This work introduces two novel RIS systems, namely, partition-assisted (RISP) PD-NOMA (RISP-PD-NOMA) and RISP-Quadrature-NOMA (RISP-Q-NOMA), maximize diversity order improve signa...

In this paper, a backscatter cooperation (BC) scheme is proposed for non-orthogonal multiple access (NOMA) downlink transmission. The key idea to the surplus power of received signals at one user enhance reception who cannot recover its information. To evaluate performance BC-NOMA scheme, three benchmark schemes are introduced, which include non-cooperation (NC)-NOMA conventional relaying (CR)-...

In the wake of growth in intelligent mobile devices and wide usage of bandwidth-hungry applications of mobile Internet, the demand of wireless data traffic and ubiquitous mobile broadband is rapidly increasing. On account of these developments, the research on fifth generation (5G) networks presents an accelerative tendency on a global scale. Edge computing draw lots of attention for reducing t...

Non-orthogonal multiple access (NOMA) makes multiple mobile users share the same frequency band. In a conventional NOMA scheme, a user pair that can be assigned to the same frequency resource is limited, which reduces the amount of capacity improvement possible. This is because a far user demodulates a signal without canceling an underlaid signal for a near user. In addition, semi-orthogonalmul...

Journal of Earthquake Engineering Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t741771161 Estimation of Probabilistic Seismic Losses and the Public Economic Resilience—An Approach for a Macroeconomic Impact Evaluation Omar D. Cardona a; Mario G. Ordaz b; Mabel C. Marulanda c; Alex H. Barbat c a Instituto de ...

This paper investigates the impact of relay selection (RS) on the performance of cooperative non-orthogonal multiple access (NOMA), where relays are capable of working in either full-duplex (FD) or half-duplex (HD) mode. A number of relays (i.e., K relays) are uniformly distributed within the disc. A pair of RS schemes are considered insightfully: 1) Single-stage RS (SRS) scheme; and 2) Two-sta...

In this paper, a nonorthogonal multiple access based cooperative relaying system (NOMA-CRS) is consideredto increase spectral efficiency. Besides, the simultaneous wireless information and power transfer (SWIPT) proposedfor relay in NOMA-CRS. SWIPT-NOMA-CRS, three different energy harvesting (EH) protocols, sharing(PS), time sharing (TS) ideal protocols are implemented. The outage performances ...

In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines conventional sparse code (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase number users served as compared uses antennas at base station. To end, joint resource allocation problem for MA-H...