학술논문
On the Feasibility of Interference Alignment in the Cellular Network
Document Type
Article
Source
KSII Transactions on Internet and Information Systems (TIIS). Nov 30, 2017 11(11):5324
Subject
Language
English
ISSN
1976-7277
Abstract
In this paper, we investigate the feasibility of interference alignment(IA) in signal space in the scenario of multiple cell and multiple user cellular networks, as the feasibility issue is closely related to the solvability of a multivariate polynomial system, we give the mathematical analysis to support the constraint condition obtained from the polynomial equations with the tools of algebraic geometry, and a new distribute IA algorithm is also provided to verify the accessibility of the constraint condition for symmetric system in this paper. Simulation results illustrate that the accessibility of the constraint condition is hold if and only if the degree of freedom(DoF) of each user can be divided by both the transmit and receive antenna numbers.