http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Impact of Temporary Link Blockage on Ergodic Capacity of FSO System
Milica I. Petkovic,Goran T. Djordjevic 한국전자통신연구원 2018 ETRI Journal Vol.40 No.3
Free‐space optical (FSO) systems have attracted much attention from both research and application perspectives owing to their many benefits, such as license‐free operation, low‐cost, and high data rates. This paper investigates the ergodic capacity of FSO systems, which is an important metric of system performance. The stochastic temporary laser‐beam blockage, pointing errors, and atmospheric turbulence are simultaneously considered. The results illustrate that the link blockage causes a decreased ergodic capacity. We show that to maximize the ergodic capacity, there is an optimal value of the laser‐beam radius at the waist, which largely depends on pointing errors; however, it is independent of the atmospheric turbulence and the probability of link blockage.