Investigation on Multi-user Scheduling Algorithms Over Non-identical Channel Distribution and LTE Networks
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Investigation on Multi‑user Scheduling Algorithms Over Non‑identical Channel Distribution and LTE Networks S. Krithiga1 · Vidhyacharan Bhaskar2,3,4,5 · S. Malarvizhi1
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this paper, we investigate the performance of various multi-user scheduling algorithms over independent and non-identically distributed generalized fading channel and 3GPP long term evolution (LTE) networks. Multi-user scheduling is an important task to be performed in wireless communication networks to share the bandwidth resource effectively between large number of users. In this paper, novel expressions for average BER, average channel capacity and fairness among users are derived for various scenarios such as (1) independent identical fading parameter, independent non identical average SNR channel conditions and (2) both fading parameter and average SNR are independent and nonidentically distributed under absolute SNR (AS) scheduling and threshold SNR scheduling. More over the performance of threshold SNR scheduling is compared with AS scheduling and other existing scheduling techniques to identify a suitable scheduling algorithm for LTE networks. Analytical expressions are simulated and validated through MATLAB, and insightful discussions are provided from the numerical results. Keywords Multiple input multiple output · α-µ Fading channel · AS scheduling · Threshold SNR · Bit error rate · Channel capacity · Fairness among users · LTE standard * Vidhyacharan Bhaskar [email protected]; [email protected]; [email protected]; vidhyacharan. [email protected] S. Krithiga [email protected] S. Malarvizhi [email protected] 1
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu 603203, India
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Department of Electrical and Computer Engineering, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA
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Department of Electrical Engineering, California State University at San Luis Obispo, San Luis Obispo, CA 93407, USA
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Department of Computer Science, California State University at East Bay, 25800 Carlos Bee Blvd, Hayward, CA 94542, USA
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Department of Electrical Engineering, Northwestern Polytechnic University, 47650 Westinghouse Dr., Fremont, CA 94539, USA
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S. Krithiga et al.
1 Introduction 1.1 Overview Multiple-input multiple-output (MIMO) technology is a wireless technology that uses multiple transmitters and receivers to overcome the detrimental effects of multipath and fading when trying to achieve high data throughput in limited-bandwidth channels [1]. The mobile network technologies existing in 4th Generation (4G) include, LTE which is standardized by 3rd Generation Partnership Project (3GPP). The name terminology “Long Term Evolution” evolved because it represents the existing 4G, a progressive growth of Global System for Mobile communication (GSM) and Universal Mobile Telecommunication Standard (UMTS)
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