Optimal Hybrid Precoding Based QoE for Partially Structured Massive MIMO System  

作　　者：Farung Samklang Peerapong Uthansakul Monthippa Uthansakul Patikorn Anchuen 

机构地区：[1]School of Telecommunication Engineering,Suranaree University of Technology,Nakhon Ratchasima,30000,Thailand

出　　处：《Computers, Materials & Continua》2022年第4期1887-1902,共16页计算机、材料和连续体（英文）

摘　　要：Precoding is a beamforming technique that supports multi-streamtransmission in which the RF chain plays a significant role as a digital precoding at the receiver for wireless communication. The traditional precodingcontains only digital signal processing and each antenna connects to each RFchain, which provides high transmission efficiency but high cost and hardwarecomplexity. Hybrid precoding is one of the most popular massive multipleinput multiple output (MIMO) techniques that can save costs and avoid usingcomplex hardware. At present, network services are currently in focus with awide range of traffic volumes. In terms of the Quality of Service (QoS), it iscritical that service providers pay a lot of attention to this parameter and itsrelationship to Quality of Experience (QoE) which is the measurement of theoverall level of user satisfaction. Therefore, this paper proposes hybrid precoding of a partially structured system to improve transmission efficiency andallocate resources to provide network services to users for increasing the usersatisfaction under power constraints that optimize the quality of basebandprecoding and radio frequency (RF) precoding by minimizing alternatingalgorithms. We focus on the web browsing, video, and Voice over IP (VOIP)services. Also, a Mean Opinion Score (MOS) is employed to measure thelevel of user satisfaction. The results show that the partially structured systemprovides a good user satisfaction with the network’s services. The partiallystructured system provides high energy efficiency up to 85%. Considering webservice, the partially structured system for 10 users provides MOS at 3.21 whichis higher than 1.75 of fully structured system.

关 键 词：Massive MIMO quality of experience(QoE) mean opinion score(MOS) quality of service(QoS) hybrid precoding partially structured system 

分 类 号：TN915[电子电信—通信与信息系统]