Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks | ||
| Journal of Communication Engineering | ||
| مقاله 4، دوره 7، شماره 1 - شماره پیاپی 14، شهریور 2018، صفحه 34-48 اصل مقاله (138.32 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22070/jce.2018.2810.1066 | ||
| نویسندگان | ||
| Ata Khalili* 1؛ Soroush Akhlaghi2 | ||
| 1Electrical Engineering Department, Shahed University, Tehran, Iran | ||
| 2Shahed University | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| Sub-Channel assignment؛ Power control؛ Mixed Integer Non Linear Problem؛ Hungarian algorithm | ||
|
آمار تعداد مشاهده مقاله: 543 تعداد دریافت فایل اصل مقاله: 300 |
||