Ergodic Channel Capacity of PPM-Coded Optical MIMO Communications Under Combined Effects

Autor:	Minghua Cao, Yue Zhang, Zhongjiang Kang, Huiqin Wang
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	atmospheric channel ergodic channel capacity pulse position modulation spatial correlation optical wireless communications Electrical engineering. Electronics. Nuclear engineering TK1-9971 Telecommunication TK5101-6720
Zdroj:	International Journal of Electronics and Telecommunications, Vol vol. 67, Iss No 3, Pp 431-436 (2021)
Druh dokumentu:	article
ISSN:	2081-8491 2300-1933
DOI:	10.24425/ijet.2021.137830
Popis:	The ergodic channel capacity of wireless optical multiple-input multiple-output (MIMO) system with pulse position modulation (PPM) is investigated. The combined effects of atmospheric turbulence, atmospheric attenuation, pointing error and channel spatial correlation are taken into consideration. The expression of ergodic channel capacity is derived, and is further performed by Wilkinson approximation method for simplicity. The simulation results indicated that the strong spatial correlation has the greatest influence on the ergodic channel capacity, followed by pointing errors and atmospheric turbulence. Moreover, the ergodic channel capacity growth brought by space diversity only performs well under independent and weakly correlated channels. Properly increasing the size and spacing of the receiving apertures is an effective means of effectively increasing the ergodic channel capacity.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/87e83025d7a14f05a6a50321cbc3892c Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF