作者
Ata Khalili, Soroush Akhlaghi, Hina Tabassum, Derrick Wing Kwan Ng
发表日期
2020/1/31
期刊
IEEE Wireless Communications Letters
卷号
9
期号
6
页码范围
804-808
出版商
IEEE
简介
This letter considers the problem of joint user association (UA), carrier allocation, antenna selection (AS), and power control in the uplink (UL) of a heterogeneous network such that the data rate of small cell users can be maximized while the macro-cell users are protected by imposing a threshold on the cross-tier interference. The considered problem is a non-convex mixed integer non-linear programming (MINLP). To tackle the problem, we decompose the original problem into two sub-problems: (i) joint UA, carrier allocation, and AS, and (ii) power control. Then, we iteratively solve the sub-problems by applying the tools from majorization-minimization (MM) theory and augmented Lagrange method, respectively, and obtain locally optimal solutions for each sub-problem. Simulation results illustrate that our proposed scheme outperforms existing schemes. Complexity analysis of the proposed algorithm is also …
引用总数
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