Feedback Overhead-Aware Clustering for Interference Alignment in Multiuser Interference Networks

Byoung-Yoon MIN  Heewon KANG  Sungyoon CHO  Jinyoung JANG  Dong Ku KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E100-A   No.2   pp.746-750
Publication Date: 2017/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E100.A.746
Type of Manuscript: LETTER
Category: Communication Theory and Signals
limited feedback,  clustering,  interference alignment,  

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Interference alignment (IA) is a promising technology for eliminating interferences while it still achieves the optimal capacity scaling. However, in practical systems, the IA feasibility limit and the heavy signaling overhead obstructs employing IA to large-scale networks. In order to jointly consider these issues, we propose the feedback overhead-aware IA clustering algorithm which comprises two parts: adaptive feedback resource assignment and dynamic IA clustering. Numerical results show that the proposed algorithm offers significant performance gains in comparison with conventional approaches.