Performance Analysis of GFDM Modulation in Heterogeneous Network for 5G NR
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Performance Analysis of GFDM Modulation in Heterogeneous Network for 5G NR R. Anil Kumar1 · K. Satya Prasad2
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Network densification becomes inevitable due to rapidly increasing mobile data traffic in the evolution of future cellular networks. Therefore, Heterogeneous Wireless Networks eliminate the challenges that are not covered in 4G-Long Term Evolution. The extensive contribution of the proposed work is to develop a cluster based algorithm that establishes the maximum node connections in the heterogeneous wireless network and also to implement effective Multi-User Generalized Frequency Division Multiplexing in the physical layer for future wireless communications. The presence of unconnected nodes (Base Stations) in the wireless network reduces the network efficiency and coverage capacity. Whenever a wireless device is connected to at least one isolated neighbor node (BS), it acts as a Virtual Clustered Head based on shortest path node and residual energy of the node. A Virtual Cluster (VC) based multipath routing is implemented for Heterogeneous Networks to maximize the Energy Efficiency (EE), Spectral Efficiency (SE), Channel Capacity (CC), and Network Capacity (NC) and minimize the Bit Error Rate and latency under different constraints in the network. The simulation results with GFDM modulation shows the improvement in the network performance and compared with existing OFDM results. Keywords 5G communications · Cluster based algorithm · Channel capacity · Energy efficiency · MU-GFDM · OFDM · Spectral efficiency
1 Introduction The global ICT plays an important role of significant advances in technology, rapid-growing trend in a wireless communications and generates the economy for Network operators and service providers in the world [1]. 4G-Long Term Evolution (4G-LTE) is desirable for data rates but not optimal for voice services as there will be call drops in ultra-dense areas [2]. Faster battery drain, security and privacy problems still continue in current technology. Furthermore, 5G communications require well established wireless heterogeneous * R. Anil Kumar [email protected] 1
Research scholar, JNTUK University, Kakinada, India
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Department of Electronics and Communication Engineering, Vignan’s Foundation for Science, Technology & Research (VFSTR), Guntur, India
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R. A. Kumar, K. S. Prasad
network to embed the eNB’s to increase the network life time [3]. Due to huge multimedia applications, the 5G systems will require extended multi-carrier modulations with massive MIMO, simultaneous full-duplex (FD) transmission and cloud [4]. In Centralized Radio Access Network (C-RAN) networks, it is very difficult to achieve flexibility and network scalability with less energy consumption at a same time. Because the above demands are in dispute with one another. Accordingly, 5G Heterogeneous networks design is more complex compared to 4G-LTE networks [5]. The improvement in security can reduce the energy
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