Title :
Comments on "Closed-Form Optimal Power Allocation for Weighted Rate Sum Maximization in Gaussian Broadcast Channel"
Author :
Wei Jiang ; Yifei Cui
Author_Institution :
Sch. of Electron. Eng. & Comput. Sci., Peking Univ., Beijing, China
Abstract :
In the paper by Shiyong Yang et al. , a closed-form power allocation scheme of weighted rate sum maximization in Gaussian broadcast channel was given. Their scheme is indeed optimal, but there are some critical defects in their proof for the optimality. In this paper, we first analyze the defects in their proof and then present a new proof for the optimality of their scheme.
Keywords :
Gaussian channels; broadcast channels; optimisation; Gaussian broadcast channel; closed-form optimal power allocation; weighted rate sum maximization; Additive noise; Closed-form solutions; Computer science; Educational institutions; Indexes; Receivers; Resource management; Gaussian broadcast channel; Weighted rate sum; closed-form solution; power allocation;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2013.112213.130002
