Link Layer Error Mitigation in Rural UHF-MIMO Linking Systems

This paper investigates the effect of link-layer error mitigation support in UHF-MIMO based digital linking systems, specifically investigating the example of the Tait Electronics rural linking system. This provides network connectivity to remote communities using an IP-over air packet-based TDD MIMO radio system. Analytical expressions are derived for packetized data transfer over such a system, and simulation results presented to verify performance in terms of application delay experienced by remote users under various error conditions. Results are shown that quantify the degree of improvement available through the incorporation of link-layer error mitigation through selective repetition of erroneous sub-packets.