The IUP Journal of Telecommunications
Challenges and Evaluation of Massive MIMO System Capacity Bounds for 5G Cellular Networks

Article Details
Pub. Date : May, 2020
Product Name : The IUP Journal of Telecommunications
Product Type : Article
Product Code : IJTC10520
Author Name : Babji Prasad Chapa, Gottapu Sasibhushana Rao
Availability : YES
Subject/Domain : Engineering
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No. of Pages : 11

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Abstract

In the last decade, a lot of research has been done in the field for improving the Spectral Efficiency (SE) of the cellular wireless communicating channels. Multiple-Input and Multiple-Output (MIMO) technologies play a significant role in improving the overall efficiency of the system. The entire world is facing the major challenge of bandwidth crunch. Therefore, any work or contribution, which can improve the efficiency of the communication system, is a significant contribution to society. The paper presents a brief classification of the massive MIMO system designs, and the challenges are addressed. Initially, the MIMO system is introduced to increase SE by increasing the degree of freedom in space domain by multiple antennas. A large number of transmit-antennas provide more spectral and Energy Efficiency (EE) than conventional MIMO system. Then the massive MIMO system capacity bounds are evaluated considering the hardware impairment in the system. It is found that the performance of the channel estimation is essential for improving the overall efficiency of the massive MIMO system design. Mathematical modeling is given for evaluating the channel capacity; capacity is calculated and MIMO performance is evaluated.


Description

Today, the increasing data rates and speed demand the implementation of the massive Multiple-Input and Multiple-Output (MIMO) system for the 5G cellular systems (Akbar et al., 2017; Anuj and Deepak, 2018; and Banerjee et al., 2018). Massive MIMO is the communication system having increasingly dynamic components in the antenna. Usually antennas could be 64 (T) 64 (R) or 128 (T) 128 (R) or significantly higher used at the BS unit. 64 (T) transmits 64 antenna elements and 64 (R) receives 64 antenna elements. In the future, a significant growth in massive MIMO is required so that better capacity of transmission can be achieved. Efficient massive MIMO design may lead to huge improvement in Energy Efficiency (EE), Spectral Efficiency (SE) (Bjornson et al., 2016; Mandal and Gauni, 2017; and Buzzi and D'Andrea, 2018) robustness and reliability.


Keywords

Multiple-Input and Multiple-Output (MIMO) , Massive MIMO, Spectral Efficiency (SE), Energy Efficiency (EE), 5G cellular

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