Outage Probability Analysis of AF Relaying Systems with Heterogeneous Ad Hoc Networks
Tianyang Cao · DEStech Transactions on Computer Science and Engineering · 2018
In this paper, we analyze the outage probability of AF relaying systems with Heterogeneous Ad Hoc Networks with respect to power allocation. The communicaton system can be decomposed into a a two-tier heterogeneous ad hoc network and a single-input multiple-output (SIMO) system, where the information ad hoc network and the energy ad hoc network coexist and share the same spectrum resource. We firstly establish the end-to-end signal-to-noise ratio (SNR) expression considering that the energy/information signals are transmitted with different power levels, to maximum the SNR at the terminal node, we then investigate a power allocation scheme at the relay node. Closed-form expressions for the outage probability are analytically derived based on special functions, moreover, we propose the outage probability can be tightly lower bounded by a simple expression for the case when the SNR is sufficiently high. Numerical and simulation results are also reported to verfiy our theory. This paper provides a benefical insight into performance optimization for wireless communication networks.