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International Journal of Sensors, Wireless Communications and Control


ISSN (Print): 2210-3279
ISSN (Online): 2210-3287

Research Article

Capacity Maximization in Cell Free Massive MIMO Network with Access Point Selection Method

Author(s): Tasher Ali Sheikh*, Settyvari Deekshitha, Neerugatti Shalini, Puliyalam Indira, Subramaniam Rajasekaran and Janmoni Borah

Volume 12, Issue 9, 2022

Published on: 03 January, 2023

Page: [661 - 668] Pages: 8

DOI: 10.2174/2210327913666221222145957

Price: $65


Background: Cell Free massive MIMO, containing a very large number of distributed access points (APs), which is a promising technology to provide high data rate, spectral efficiency (SE), and energy efficiency (EE). The system performance of cell-free M-MIMO is maximum when selecting optimal access points (AP) from the large number of APs. The linear precoding methods of zeroforcing (ZF) and minimum mean square error (MMSE) are utilized in this study because they are devoid of self-interference and so improve the system capacity.

Objective: The objective of this study is to maximize the system data rate in a cell-free M-MIMO network.

Methods: To maximize the system data rate, the maximum channel gain-based Access Point Selection (MCGAPS), Distance based Access Point Selection (DAPS), and Random-Access Point Selection (RAPS) algorithms are used to pick access points (APs) in a cell-free M-MIMO network. Because the MCGAPS algorithm selects those APs with the highest channel gain, the system’s rate is improved.

Results & Discussion: The DAPS algorithm is used to choose the closest APs to the user. The APs were randomly chosen using RAPS. Random user selection (RUS) algorithm schedules the same number of users.

Conclusion: It is observed that the DAPS and RUS algorithms jointly improve the system rate significantly in cell-free massive MIMO system compared to the other proposed algorithms.

Keywords: Cell free MIMO, APs, capacity maximization, MIMO, DAPS, time division duplex.

Graphical Abstract
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