2010/12/10 by Tiangao Gou, Gou, Tiangao, Syed A. Jafar +5 · 1 citation
Computer Science · Engineering · #Advanced Wireless Communication Techniques #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Security Techniques
paper · pdf · doi:10.48550/arxiv.1012.2350
openalex publication_date 2010/12/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We show that the 2x2x2 interference channel, i.e., the multihop interference channel formed by concatenation of two 2-user interference channels achieves the min-cut outer bound value of 2 DoF, for almost all values of channel coefficients, for both time-varying or fixed channel coefficients. The key to this result is a new idea, called aligned interference neutralization, that provides a way to align interference terms over each hop in a manner that allows them to be cancelled over the air at the last hop.