Spectrum sharing (SS) and energy harvesting (EH) basically improve spectrum-and-energy efficiencies required by modern communications systems. Nonetheless, most publications have focused on the linear (L) EH model which did not characterize practically non-linearities of EH circuits. Moreover, SS induces secondary receivers to suffer primary interference (PI) and facilitates eavesdroppers to overhear legitimate data. To secure communications in energy harvesting spectrum sharing networks (EHSSNs), this paper proposes a full-duplex (FD) secondary destination which not only receives legitimate signal but also jams signal reception of the eavesdropper. Joint effects of non-linear (NL) EH, PI, and FD destination-assisted jamming on security-and-reliability performances of EHSSNs are first analyzed in terms of outage and intercept probabilities that are then endorsed by Monte-Carlo simulations. Next, the proposed analysis is exploited to achieve the asymptotic analysis and the security-and-reliability analysis for two baseline EHSSNs (half-duplex (HD) destination and L EH). Finally, numerous results demonstrate joint effects of NL EH, PI, and FD destination on data security and communication reliability by comparing three EHSSNs: (i) L EH and FD destination; (ii) NL EH and FD destination; (iii) NL EH and HD destination. Notably, the proposed communications scheme with the FD destination is more secure than the baseline scheme with the HD destination. In addition, the reliability of the communications scheme with the NL EH is inferior to that with the L EH but the data security of the former is better than the latter. Additionally, the security-reliability trade-off exists for all the considered communications schemes. Moreover, the PI enhances the security but degrades the reliability. Furthermore, the time fraction for EH can be optimized to attain the best security-reliability trade-off.

频谱共享 (SS) 和能量收集 (EH) 从根本上提高了现代通信系统所需的频谱和能量效率。尽管如此，大多数出版物都集中在线性 (L) EH 模型上，该模型实际上并未表征 EH 电路的非线性。此外，SS 会导致次要接收器遭受主要干扰 (PI)，并有助于窃听者偷听合法数据。为了保护能量收集频谱共享网络 (EHSSN) 中的通信，本文提出了一种全双工 (FD) 次要目的地，它不仅可以接收合法信号，还可以干扰窃听者的信号接收。非线性 (NL) EH、PI、FD 目的地辅助干扰对 EHSSN 的安全性和可靠性性能的影响首先根据中断和拦截概率进行分析，然后通过蒙特卡洛模拟得到认可。接下来，利用所提出的分析来实现两个基线 EHSSN（半双工（HD）目的地和 L EH）的渐近分析和安全性和可靠性分析。最后，通过比较三个 EHSSN，大量结果证明了 NL EH、PI 和 FD 目的地对数据安全性和通信可靠性的联合影响：（i）L EH 和 FD 目的地；(ii) NL EH 和 FD 目的地；(iii) NL EH 和 HD 目的地。值得注意的是，提出的具有 FD 目的地的通信方案比具有 HD 目的地的基线方案更安全。此外，NL EH通信方案的可靠性不如L EH，但前者的数据安全性优于后者。此外，所有考虑的通信方案都存在安全可靠性权衡。此外，PI增强了安全性但降低了可靠性。此外，可以优化 EH 的时间分数以实现最佳的安全可靠性权衡。