Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks
محل انتشار: دوفصلنامه مهندسی مخابرات، دوره: 7، شماره: 1
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 293
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شناسه ملی سند علمی:
JR_JCESH-7-1_004
تاریخ نمایه سازی: 22 مهر 1398
چکیده مقاله:
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.
کلیدواژه ها:
نویسندگان
Ata Khalili
Electrical Engineering Department, Shahed University, Tehran, Iran
Soroush Akhlaghi
Shahed University