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Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks

Publish Year: 1397
Type: Journal paper
Language: English
View: 325

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Document National Code:

JR_JCESH-7-1_004

Index date: 14 October 2019

Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks abstract

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.

Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks Keywords:

Sub-Channel assignment , Power control , Mixed Integer Non Linear Problem , Hungarian algorithm

Power Control and Scheduling For Low SNR Region in the Uplink of Two Cell Networks authors

Ata Khalili

Electrical Engineering Department, Shahed University, Tehran, Iran

Soroush Akhlaghi

Shahed University