On The Performance of NOMA with Bi-directional in Weibull-Channel

Fading is considered to be one of the major issues in wireless communications. The non-Orthogonal Multiple Access (NOMA) technique proved to be efficient enough to overcome the fading issues if utilized efficiently. Since the signals transmitted in NOMA are superimposed, with the help of Channel State Information (CSI), the Successive Interference Cancellation (SIC) technique is applied to separate each user's signal. A lot of researches have been going on to study the performance of the NOMA system in various fading channels such as Nakagami-m channel distribution, Rayleigh channel distribution, Rician fading channel distribution, etc. Very few studies were conducted on Weibull-channel distribution applied in the NOMA network. This letter studies performance of the Weibull-channel fading distribution applied in the NOMA network in presence of two users and the presence of a bi-directional communication link between the devices. The analytical expressions were obtained to study the performance efficiency of the system and extensive simulations were generated comparing the performance in various parameters.