Title:

Structured lattice codes for approximately achieving capacity for 
half-duplex wireless networks

Authors: A. Ozgur and S N. Diggavi

Abstract:

 It has been shown recently that a new relaying strategy called
quantize-map-and-forward (QMF) approximately achieves (within a
constant number of bits) the Gaussian relay network capacity for
arbitrary topologies.  This was established using Gaussian codebooks
for transmission and random mappings at the relays. We have shown that
the same approximation result can be established by using structured
lattice codes for transmission and quantization along with structured
lattice-to-lattice mappings at the relays. In this talk we will
examine arbitrary half-duplex networks and establish an approximate
characterization of capacity through relay scheduling strategies.