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Standardization activities on Digital Video Broadcasting - Satellite Services to Handheld devices (DVB-SH) have driven the need for a consolidated narrowband channel model. In the DVB-SH system, the satellite broadcasts a signal carrying multimedia services aimed directly to a variety of mobile (handheld or vehicular) and fixed terminals. A 3-state Land Mobile Satellite (LMS) channel model that describes the narrowband propagation channel in three possible shadowing states: line-of-sight conditions, moderate shadowing and deep shadowing; was originally taken as a baseline. The channel model and assumptions made in the 3-state model were revised and data re-analyzed using automatic-data-classification and parameter-extraction iterative algorithm deriving a new model based on 2-states with varying parameters more suitable to the DVB-SH.
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