Staggered Trellis Coded Modulation with Increased Frame-Wise Memory

Staggered trellis coded modulation was recently presented as a special concatenated coding scheme employing bandwidth-efficient trellis coded modulation. Thanks to the additionally introduced frame-wise memory it outperforms the conventional parallel concatenated trellis coded modulation. The drawback of the original construction is that the order of the frame-wise memory is limited to be 1. In this work, we modify this staggered coding scheme such that frame memory orders larger than 1 are possible. Numerical simulations show that this yields an additional performance gain by lowering the error floor.