Improving the Performance of HF Radio Networks in Presence of Interference: Frequency Hopping Automatic Link Establishment

Abstract

Automatic Link Establishment (ALE) is crucial in channel assignment and data exchange in HF radio networks. The time of link establishment and its quality are two main concerns in this criterion establishment. In jamming environments, the quality of the channels is seriously influenced by the jammer signals. Frequency Hopping (FH) approaches supports communication links to overcome the jamming impairments, and the traditional ALE algorithm can be made more stable by using this approach. This paper has developed ALE algorithms to automatically establish links to handle different jamming scenarios and establish robust links to exchange data with the proposed FH-ALE system. Besides, in the proposed algorithm, we have considered the time of link establishment to be almost identical to the current ALE scenario. Hence, in the normal channel condition, the throughput value is approximately identical in proposed and traditional cases. The simulation results represent the superiority of the proposed FH-ALE approach in jamming environments.