2007•IEEE Transactions on CommunicationsRequires access

Space–Time Trellis Code Design Based on QAM-MTCM With Trellis Shaping

Dong Wang, Xiang‐Gen Xia

Abstract

In this letter, super-orthogonal space-time trellis codes (SOSTTCs) are extended for quadrature amplitude modulation (QAM) constellations. A systematic set-partitioning method for QAM constellations is given. Furthermore, trellis shaping based on set partitioning is incorporated in SOSTTCs with QAM symbols to achieve extra shaping gain. Peak constraints can be used to limit the constellation expansion ratio and peak-to-average power ratio

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Key concepts: Quadrature amplitude modulation, Trellis (graph), Trellis modulation, QAM, Constellation, Space–time trellis code, Constellation diagram, Mathematics