تقرير
Energy Efficiency Maximization in RIS-Aided Cell-Free Network with Limited Backhaul
| العنوان: | Energy Efficiency Maximization in RIS-Aided Cell-Free Network with Limited Backhaul |
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| المؤلفون: | Le, Quang Nhat, Nguyen, Van-Dinh, Dobre, Octavia A., Zhao, Ruiqin |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Electrical Engineering and Systems Science - Signal Processing |
| الوصف: | Integrating the reconfigurable intelligent surface in a cell-free (RIS-CF) network is an effective solution to improve the capacity and coverage of future wireless systems with low cost and power consumption. The reflecting coefficients of RISs can be programmed to enhance signals received at users. This letter addresses a joint design of transmit beamformers at access points and reflecting coefficients at RISs to maximize the energy efficiency (EE) of RIS-CF networks, taking into account the limited backhaul capacity constraints. Due to a very computationally challenging nonconvex problem, we develop a simple yet efficient alternating descent algorithm for its solution. Numerical results verify that the EE of RIS-CF networks is greatly improved, showing the benefit of using RISs. Comment: submitted for possible publication |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2012.11736 |
| رقم الأكسشن: | edsarx.2012.11736 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |