Outage capacity of dual-hop decode-and-forward relaying system over generalized fading channels

This paper studies a dual-hop decode-and-forward (DF) relaying system over generalized fading channels which can be modeled by the η-μ distribution and κ-μ distribution. The η-μ distribution includes the Hoyt (Nakagami-q), the Nakagami-m, the Rayleigh and the One-Sided Gaussian distributions as special cases. The κ-μ distribution includes Rice (Nakagami-n), Nakagami-m, Rayleigh and the One-Sided Gaussian distribution as special cases. We derive the analytical expressions of outage capacity for the dual-hop DF relaying system under such two distributions, respectively. Although the derived expressions are given in infinite form, they converge rapidly and can be accurately approximated by finite terms. Some numerical results are presented for different η, κ and μ. The obtained analytical expressions can be used for evaluating the outage capacity performance of the dual-hop DF relaying system.