Jamming signal and primary interference in spectrum sharing environment: Performance analysis

Spectrum sharing environment permits secondary users (SUs) to utilize radio spectrum of primary users (PUs) but creates cross-interference between SUs and PUs. Moreover, jamming signal is useful in improving information security by deliberately corrupting received signals at eavesdroppers. The current paper presents an analytical framework on communication reliability and information security, which takes into account jamming signal, primary interference, maximum transmit power constraint, interference power constraint, Rayleigh fading. The analytical framework includes two exact closed-form formulas of detection outage probability and interception outage probability. Its validity is corroborated by computer simulations. Various results illustrate that the primary interference dramatically deteriorates both probabilities while the jamming signal creates their large difference, highlighting its efficacy in enhancing information security.