TY - JOUR T1 - A Gamma-Exponential Distribution Channel Model for Turbulence in Free Space Optical Communication AU - Kavitha, M.R. AU - Geetha, K. Parimala JO - Asian Journal of Information Technology VL - 15 IS - 20 SP - 4011 EP - 4019 PY - 2016 DA - 2001/08/19 SN - 1682-3915 DO - ajit.2016.4011.4019 UR - https://makhillpublications.co/view-article.php?doi=ajit.2016.4011.4019 KW - Gamma channel KW -QAM KW -free space optical KW -rayleigh fading KW -turbulence AB - Now a day’s various type channel modeling are proposed in communication medium. In this paper introduces a new channel model known as gamma-exponential distribution for turbulence vanishing in free space optical communication. The proposed model acquires the probability density function and bit error rate of received Quadrature Amplitude Modulation (QAM) modulated optical power in Free Space Optical and (FSO) communication. This method acts well under weak, moderate and strong turbulence conditions. This model is related with existing channel models, Rayleigh fading channel model, gamma distribution channel model and gamma-gamma distribution channel model. ER -