4PSK-BCM-code diversity versus 4PSK-ring-TCM over the mobile satellite channel

This paper presents two new schemes namely combined 4PSK-block coded modulation-code diversity (BCM-CD), and 4PSK-ring-trellis coded modulation (ring-TCM). These schemes have been proposed for digital transmission over the mobile satellite system. The complexity and performance of the two schemes have been evaluated by computer simulation.