Energy Efficient Power Allocation in Massive MIMO Systems with Mismatch Channel Estimation Error
محل انتشار: پنجمین کنفرانس مهندسی مخابرات ایران
سال انتشار: 1400
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 268
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شناسه ملی سند علمی:
ICCEN05_028
تاریخ نمایه سازی: 14 آذر 1400
چکیده مقاله:
In this paper, we investigate the energy efficient power allocation for the downlink in the massive multiple-input multiple-output (MIMO) systems under zero-forcing (ZF) receiver. The radio frequencies (RF) that have a significant effect on system performance has not been considered in mostof previous researches. Increasing of random changes in RF creates a mismatch channel. We must consider the effects of the RF circuit for the performance evaluation of the massive MIMO systems. We also consider the rate of system in the presence of estimation error, similar to real world, with the quality ofservice (QoS) constraint and the transfer capacity of users. In the scenario of this paper, users are divided into two groups. The first group are users who have stronger channel conditions or in other words are located in the center of the cell, and the second group belongs to users who have weak channel conditions and are located at the edge of the cell. By using Karush-Kuhn- Tucker (KKT) conditions, we obtain the optimal power of users. The results of implementation and simulations are given to confirm the efficiency of the proposed algorithm.
کلیدواژه ها:
نویسندگان
Mahdi Nangir
Electrical and Computer Engineering Department University of Tabriz Tabriz, Iran
Abdolrasoul Sakhaei Gharagezlou
Electrical and Computer Engineering Department University of Tabriz Tabriz, Iran
Nima Imani
Electrical and Computer Engineering Department University of Tabriz Tabriz, Iran