Message-passing decoding algorithm of low-density lattice codes with Gaussian approximation

In this paper we apply the single Gaussian approximation without using the moment matching method. The computation complexity is further reduced while keeping an indistinguishable performance loss. This paper is organized as follows. In section II, we describe the basic concepts of LDLC codes. Section III is devoted to describing the proposed decoding algorithm with single Gaussian approximation. Section IVpresents some simulation results. Section V concludes the paper.