Abstract
This study analyses the performance of two-hop decode-and-forward (DF) relaying protocol under mixed faded channels by evaluating outage probability ( ) and average bit-error probability (ABEP). It is assumed that the channel between source and relay is Rayleigh fading, whereas the relay-destination link is subject to Weibull fading. First, a closed-form expression is formulated for and then it is used to obtain ABEP for the considered system model. The ABEP performance of two-hop DF relaying is presented for M-ary phase shift keying (M-PSK) signaling with different constellation sizes. Moreover, the proposed analytical expressions are verified by simulations that present the correctness of the derived formulas.DOI: http://dx.doi.org/10.5755/j01.eee.21.1.9806
Highlights
Two-hop transmission technologies have attracted much interest in wireless communications due to its connectivity when direct transmission is impractical because of possible shadowing effects or path loss attenuation
Few works have focused on the dual-hop transmission models under asymmetric fading conditions, i.e., Rayleigh/Rician, Rician/Rayleigh, Rayleigh/Nakagami-m, Rayleigh/generalized Gamma, Rayleigh/Hoyt and RF/free-space optics (FSO)
This work is based on such a realistic scenario which is more suitable to show the effects of real wireless environments
Summary
Two-hop transmission technologies have attracted much interest in wireless communications due to its connectivity when direct transmission is impractical because of possible shadowing effects or path loss attenuation. In [11], an AF relaying transmission model was investigated based on formulated expressions for Pout and ABEP under mixed Rayleigh/Hoyt fading. Few works have focused on the dual-hop transmission models under asymmetric fading conditions, i.e., Rayleigh/Rician, Rician/Rayleigh, Rayleigh/Nakagami-m, Rayleigh/generalized Gamma, Rayleigh/Hoyt and RF/FSO. There is not any work which considers deriving new formulas for the Pout and ABEP of dual-hop DF relay network in Rayleigh/Weibull asymmetric faded links. Provides good fit of the statistical characteristics of wireless fading channels for theoretical studies [13] Motivated by these observations, we study DF technique based a dual-hop communication system where the channels of two hops experience Rayleigh and Weibull faded conditions for the first time. We provide computer simulations and analytical results on ABEP to show the validity of the derived expressions
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