A Layered Lattice Coding Scheme for a Class of Three User Gaussian   Interference Channels
  The paper studies a class of three user Gaussian interference channels. A new layered lattice coding scheme is introduced as a transmission strategy. The use of lattice codes allows for an "alignment" of the interference observed at each receiver. The layered lattice coding is shown to achieve more than one degree of freedom for a class of interference channels and also achieves rates which are better than the rates obtained using the Han-Kobayashi coding scheme. 
Sriram Sridharan, Amin Jafarian, Sriram Vishwanath, Syed A. Jafar and   Shlomo Shamai (Shitz)