Performance Analysis of the S-MIM Messaging Protocol over a Land Mobile Satellite (LMS) Channel using a Simplified Transmission Control Algorithm

In this paper we present experimental results of the ETSI S-MIM (S-band Mobile Interactive Multimedia) standard, tested for the first time with the introduction of a Land Mobile Satellite (LMS) channel and through a fully compliant demodulation platform. In particular, the employed interface implements the Part 3 of the standard, i.e. the asynchronous access protocol, especially conceived for the interactive messaging services. The interest of this paper resides in the fact that the performance assessment, taking into account more realistic mobile scenarios, validates the theoretical results and opens the way for the exploitation of low-power mobile terminals, targeting automotive applications with extended coverage in suburban areas.