Yazar
Elamassie, Mohammed, Uysal, Murat
Basım Tarihi
2020-10
Basım Yeri
-
IEEE
Konu
Fading channels, Ocean temperature, Wireless communication, Salinity (geophysical), Temperature measurement, Diversity methods, Underwater visible light communication, Underwater turbulence, Error rate performance, Diversity order
Tür
Süreli Yayın
Dil
İngilizce
Dijital
Evet
Yazma
Hayır
Kütüphane
Özyeğin Üniversitesi
Demirbaş Numarası
1536-1276
Kayıt Numarası
5a58125c-f273-4642-ba89-0b5c15dd37c7
Lokasyon
Electrical & Electronics Engineering
Tarih
2020-10
Notlar
TÜBİTAK
Örnek Metin
Underwater visible light communication (UVLC) has been introduced to support emerging high data rate applications such as real-time image and video transmission. Initial works on UVLC build upon the assumption of fixed turbulence strength through the transmission range which can be justified only for horizontal links. In vertical underwater links, the gradient of temperature and salinity changes with depth. This effectively results in ocean stratification where water with different values of salinity and temperature form non-mixing layers. In this paper, we first model the vertical underwater link as a cascaded fading channel where fading coefficients associated with different layers are modeled as independent and non-identical distributed. Based on the cascaded lognormal and Gamma-Gamma distributions respectively for weak and moderate/strong turbulence conditions, we first derive closed-form expressions for the bit error rate (BER) performance of UVLC systems. Then, we analyze the asymptotic BER performance and determine the diversity orders. In addition, we derive closed-form expressions for the average ergodic capacity of underwater cascaded fading channels under consideration. We present simulation results to confirm the analytical findings.
DOI
10.1109/TWC.2020.3007343
Cilt
19
