2 research outputs found
OUTAGE PERFORMANCE OF COGNITIVE RF/FSO SYSTEM WITH MRC SCHEME AT THE RECEIVER
The aim of this paper is performance analysis of the hybrid radio frequency (RF)/free-space optical (FSO) system, where the transmission is performed simultaneously over FSO link and spectrum sharing cognitive RF sub-system. The FSO link is affected by Gamma-Gamma atmospheric turbulence, while in spectrum sharing cognitive RF sub-system the peak interference power constraint at the primary user's receiver is considered in Nakagami-m fading environment. Outage probability expressions are provided in the integral form for the case when the maximal ratio combining (MRC) is applied at the destination. The effects of the atmospheric turbulence strength, the number of RF antennas, allowable power and fading severity on the outage performance are observed. Numerical results are presented and verified by Monte Carlo simulations
Energy detector performance in Rician fading channel
In this paper we analyzed the problem of detection of unknown signals in the
Rician fading channel. A closed-form expression for the probability of
detection is derived, followed by the numerical results. The analysis was
extended to the case of cooperative sensor network in which the environment
can be modelled by independent Rician fading channels