  In this paper, we investigate the physical layer security over the Alternate
Rician Shadowed fading channel, which is a novel channel model for body-centric
wireless links and land mobile satellite. We derive exact closed-form
expressions for the average secrecy capacity (ASC), secrecy outage probability
(SOP), and probability of non-zero secrecy capacity (PNZ) for two cases: (i) m
is a positive real number and (ii) m is a positive integer number, where m
describes the level of fluctuation of the line-of-sight component. In the first
case, SOP is derived in terms of the Meijer's G-function, while ASC and PNZ are
derived in terms of the multivariate Fox's H-function. In the second case, ASC
is derived in terms of the Meijer's G-function, while SOP and PNZ are derived
in terms of elementary functions. In addition, we derive the asymptotic ASC,
SOP and PNZ expressions which all match well the exact ones at high values of
signal-to-noise ratio, respectively. The capacity slope of asymptotic ASC and
the secrecy diversity order of asymptotic SOP have been derived for providing
more physical insights. Finally, the accuracy of our derived expressions is
validated by Monte-Carlo simulations.
