Improved Iterative Water-Filling algorithm in MU-MIMO system
In this paper, an efficient user selection method for traditional iterative Water-Filling algorithm in Gaussian multi-user broadcast channel is developed to reduce the computational complexity. The new algorithm selects some effective users from all the users, and then allocates the entire power among the selected users applying Water-Filling algorithm. The vector Gaussian broadcast channel and the matrix Gaussian broadcast channel are considered respectively and the corresponding user selection methods are proposed. Theoretical analysis and simulation results show that the new algorithm can significantly improve the computational efficiency of the traditional iterative Water-Filling power allocation and can obtain almost the optimal sum capacity.
Iterative Water-Fiiiling algorithm user selection multi-user diversity sum capacity power allocation
Dongyan Zhao Zesong Fei Shuo Li Jingming Kuang
RCDCT, Modern Communication Lab, Dep.of E.E.Beijing Institute of Technology Beijing, P.R.China
国际会议
北京
英文
173-178
2010-09-26（万方平台首次上网日期，不代表论文的发表时间）