On Outage Performance of Terahertz Wireless Communication Systems

To expedite research progress on terahertz (THz) communications, we analyze the outage performance of THz communication systems by a compound channel model in this paper. Different from existing models, the compound channel model incorporates the effects of spreading loss, molecular absorption loss, shadowing, and multi-path fading via a composite distribution. By using this model, we maintain an equilibrium of the outage performance analysis between mathematical tractability and the fidelity of realistic THz channels. Specifically, by utilizing the compound channel model, outage performance analysis can get rid of sophisticated case-specific channel modeling relying on field measurement and the ray-tracing assessment. To facilitate the application of the proposed channel model, we also design a maximum likelihood estimation (MLE) based channel parameter estimation approach for the compound channel model. The analytical results of outage performance by using the compound channel model are given in closed form and verified by numerical results.

Automated summary

This paper analyzes the outage performance of terahertz communication systems using a compound channel model, which incorporates various factors affecting the performance. The proposed model achieves a balance between mathematical tractability and realistic channel representation. Additionally, a maximum likelihood estimation-based approach is designed for channel parameter estimation. The analytical results are presented in closed form and verified through numerical experiments.