How to Achieve the Optimal DMT of Selective Fading MIMO Channels?

摘要

In this paper, we consider a particular class of selective fading channelcorresponding to a channel that is selective either in time or in frequency.For this class of channel, we propose a systematic way to achieve the optimalDMT derived in Coronel and B\"olcskei, IEEE ISIT, 2007 by extending thenon-vanishing determinant (NVD) criterion to the selective channel case. A newcode construction based on split NVD parallel codes is then proposed to satisfythe NVD parallel criterion. This result is of significant interest not only inits own right, but also because it settles a long-standing debate in theliterature related to the optimal DMT of selective fading channels.