Title :
Interference alignment performance in gaussian interference channel
Author :
Qinmin Wang ; Changlin Zhou ; Zhongpei Zhang ; Fengke Jie
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Interference alignment (IA) is a data transmission scheme that achieves maximum multiplexing gains in interference channel. This study investigates the theoretical sum rate for IA. By analysing both the asymptotic eigenvalues distribution and the magnitude of the effective channel after interference cancellation in IA, a closed-form of sum rate expression is derived for Gaussian interference channel. Numerical results show that the closed-form results nearly coincide with that derived from numerical results of IA.
Keywords :
Gaussian channels; data communication; eigenvalues and eigenfunctions; interference suppression; Gaussian interference channel; Interference alignment; asymptotic eigenvalues distribution; closed-form expression; data transmission scheme; sum rate expression;
Journal_Title :
Communications, IET
DOI :
10.1049/iet-com.2013.1159
