On Impact of HPA Nonlinearity in NOMA Enabled Heterogeneous Cellular Network

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18450%2F24%3A50021763" target="_blank" >RIV/62690094:18450/24:50021763 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/10510647" target="_blank" >https://ieeexplore.ieee.org/document/10510647</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TVT.2024.3394876" target="_blank" >10.1109/TVT.2024.3394876</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On Impact of HPA Nonlinearity in NOMA Enabled Heterogeneous Cellular Network

Popis výsledku v původním jazyce

Heterogeneous cellular network (HCN) is structured on a multi-tier architecture comprising of macro-base stations (MBSs) and small-base stations (SBSs). MBS and SBS are deployed to accommodate a large number of users for the purpose of achieving higher data rates, coverage, and improved outage performance. Recognized for its spectrum efficiency, non-orthogonal multiple access (NOMA) emerges as a viable multiple-access technique for sixth-generation (6G) wireless networks. To maximize power efficiency and reduce outage probability, the power amplifier at the base station is operated close to saturation, which results in nonlinear distortions. Thus, it is vital to understand the fundamental performance guarantees of practical NOMA-enabled HCN systems (HCN-NOMA) under nonlinear distortions introduced by high power amplifiers (HPA). In this paper, we employ an analytical performance evaluation of HCN-NOMA using stochastic geometric approach consisting of a multi-tier architecture with nonlinear distortions produced by HPA. We compare and highlight the impact of HPA operating in the linear and nonlinear regions on orthogonal multiple access (OMA) and NOMA in multi-tier HCN. The performance is assessed and compared in terms of outage probability, system throughput, and energy efficiency. It is observed that the performance is improved by up to 96.6% in HCN employing NOMA versus OMA while considering the nonlinear region of operation of HPA.

Název v anglickém jazyce

On Impact of HPA Nonlinearity in NOMA Enabled Heterogeneous Cellular Network

Popis výsledku anglicky

Heterogeneous cellular network (HCN) is structured on a multi-tier architecture comprising of macro-base stations (MBSs) and small-base stations (SBSs). MBS and SBS are deployed to accommodate a large number of users for the purpose of achieving higher data rates, coverage, and improved outage performance. Recognized for its spectrum efficiency, non-orthogonal multiple access (NOMA) emerges as a viable multiple-access technique for sixth-generation (6G) wireless networks. To maximize power efficiency and reduce outage probability, the power amplifier at the base station is operated close to saturation, which results in nonlinear distortions. Thus, it is vital to understand the fundamental performance guarantees of practical NOMA-enabled HCN systems (HCN-NOMA) under nonlinear distortions introduced by high power amplifiers (HPA). In this paper, we employ an analytical performance evaluation of HCN-NOMA using stochastic geometric approach consisting of a multi-tier architecture with nonlinear distortions produced by HPA. We compare and highlight the impact of HPA operating in the linear and nonlinear regions on orthogonal multiple access (OMA) and NOMA in multi-tier HCN. The performance is assessed and compared in terms of outage probability, system throughput, and energy efficiency. It is observed that the performance is improved by up to 96.6% in HCN employing NOMA versus OMA while considering the nonlinear region of operation of HPA.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20203 - Telecommunications

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Vehicular Technology

ISSN

0018-9545

e-ISSN

1939-9359

Svazek periodika

73

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

14038-14043

Kód UT WoS článku

001317694500089

EID výsledku v databázi Scopus

2-s2.0-85192218533