Achievable Rates for K-User Gaussian Interference Channels

作者：Jafarian Amin^*; Vishwanath Sriram

来源：IEEE Transactions on Information Theory, 2012, 58(7): 4367-4380.

DOI：10.1109/TIT.2012.2191691

The aim of this paper is to study the achievable rates for a K-user Gaussian interference channel (G-IFC) for any signal-to-noise ratio using a combination of lattice and algebraic codes. Lattice codes are first used to transform the G-IFC into a discrete input-output noiseless channel, and subsequently algebraic codes are developed to achieve good rates over this new alphabet. In this context, a quantity called efficiency is introduced which reflects the effectiveness of the algebraic coding strategy. This paper first addresses the problem of finding high-efficiency algebraic codes. A combination of these codes with Construction-A lattices is then used to achieve nontrivial rates for the original G-IFC.

• 出版日期2012-7