LTE and WiMAX satellite systems: Improving FEC performance using split multicode transmission

Abstract

In this paper we investigate the degradation in FEC performance of LTE and WiMAX air-interfaces in satellite mobile channels due to lack of sufficient time diversity caused by the use of a short transmit time interval (TTI). We then propose a generalized ‘split multicode transmission’ technique to overcome this problem without any reduction in the achievable user data rate. Simulation results are presented using the MAESTRO satellite wideband channel for rural areas.