RÖLE YARDIMLI A?A?I YÖNLÜ NOMA S?STEMLER?N?N B?L??SEL RADYO A?LARDAK? ERGOD?K KAPAS?TE ANAL?Z?
نویسندگان
چکیده
Bu çal??mada, röle yard?ml? a?a?? yönlü dikgen olmayan çoklu eri?im (NOMA) sistemlerinin bili?sel radyo a?lardaki ergodik kapasite analizi incelenmektedir. Önerilen sistem modelindeki matematiksel ç?kar?mlar, ikincil a?daki yak?n ve uzak kullan?c?lar için tam yakla??k kapal? form denklemlerinin üstel da??l?ml? kanal göz önüne al?narak türetilmesiyle elde edilmektedir. Hem rölede, hem de kullan?c?larda ard???k giri?im iptali gerçekle?mesi durumunda, toplam performans? dü?ümler aras? mesafe, güç payla??m katsay?s?, iletim gücü yol kayb? üssü parametreleri dikkate al?narak, ?10?^6 tekrarl? Monte Carlo benzetimleriyle analiz Elde edilen nümerik sonuçlar, kullan?c?ya atanan tahsisinin artmas? ile kapasitenin artt???n? göstermektedir. Birincil a? vericisinin röleden uzakla?mas?n?n performans?n? iyile?tirdi?i gözlenmi?tir. Yak?n kullan?c? olarak hesaplanan ba?ar?m?n?n, örtü?mesi, ancak yüksek i?aret gürültü oran? (SNR) bölgesinde mümkün olmaktad?r. durum, kurgulanan NOMA sisteminin, ortak giri?imi etki gösteren birincil ayn? frekans band?n? kullanmas?n?n etkisi de?erlendirilmi?tir.
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ژورنال
عنوان ژورنال: Mühendislik bilimleri ve tasar?m dergisi
سال: 2021
ISSN: ['1308-6693']
DOI: https://doi.org/10.21923/jesd.826084