%0 Journal Article
%T Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks
%J Journal of Communication Engineering
%I Shahed University
%Z 2322-4088
%A Khalili, Ata
%A Akhlaghi, Soroush
%D 2018
%\ 06/01/2018
%V 7
%N 1
%P 34-48
%! Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks
%K Sub-Channel assignment
%K Power control
%K Mixed Integer Non Linear Problem
%K Hungarian algorithm
%R 10.22070/jce.2018.2810.1066
%X In this paper we investigate the sub-channel assignment and power control to maximize the total sum rate in the uplink of two-cell network. It is assumed that there are some sub-channels in each cell which should be allocated among some users. Also, each user is subjected to a power constraint. The underlying problem is a non-convex mixed integer non-linear optimization problem which does not have a trivial solution. To solve the problem, having fixed the consumed power of each user, and assuming low co-channel interference region, the sub-channel allocation problem is reformulated into a more mathematically tractable problem which is shown it can be tackled through the so-called Hungarian algorithm. Then, the consumed power of each user is reformulated as a quadratic fractional problem which can be numerically derived. Numerical results demonstrate the superiority of the proposed method in low SNR region as compared to existing works addressed in the literature.
%U http://jce.shahed.ac.ir/article_589_a66f7aa738da7c4acdef0dc3f4a5c762.pdf