Theoretical Analysis of Adaptive Algorithm Modulation Scheme in 3D OFDM WiMAX System

Author:

Fedosov Valentin Petrovich,Jameel Jaleel Sadoon,Kucheryavenko Svetlana Valentinovna

Abstract

The growth of wireless networking has contributed to the need for high-speed services and multimedia applications anywhere and at any time. OFDM WiMAX technology is now considered one of the most popular technologies capable of delivering faster implementation and lower cost than standard wired options for Broadband Wireless Connectivity in metropolitan areas. This paper proposes appropriate adaptive modulation to be used in wireless networks based on SISO and MIMO OFDM WiMAX, which allows the performance of the network to be improved in the case of non-line-of-sight communications that are typical in urban environments. The effects of several paths, signal attenuation, Doppler shift, and different mobility speeds on the performance of the system were investigated. Mathematical models analysis of adaptive modulation in SISO and MIMO systems is treated by using BER, SNR and noise components. Simulation results show that the adaptive algorithm would improve throughput. It can also be concluded that when processing signals in a receiving system under conditions of multi-path signal propagation, the use of adaptive algorithms has a positive effect on noise immunity. HIGHLIGHTS With the growing evolution of wireless communication technologies, there is still a need for higher data rates, increased system capacity, and improved service quality 3D OFDM-MIMO WiMAX technology is now regarded as one of the most common solutions for Broadband Wireless Connectivity in Urban Areas, capable of offering faster implementation and lower costs than standard wired options Effective adaptive algorithm processing in 3D wireless networks based on SISO-OFDM and MIMO-OFDM WiMAX was proposed, enabling network performance to be enhanced in the case of non-LOS wireless communications, which are standard in urban conditions. On the performance of the system, signal attenuation, the effects of several paths, different mobility speeds and Doppler shift were studied The adaptive algorithm significantly reduces the probability of error and increases the throughput. It can be concluded that the use of adaptive spatio-temporal algorithms has a positive effect on noise immunity when processing signals in the receiving system under conditions of multipath signal propagation GRAPHICAL ABSTRACT

Publisher

College of Graduate Studies, Walailak University

Subject

Multidisciplinary

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Medical Image Transmission in 3D WiMAX Channel Using Adaptive Algorithm Based on MIMO-OFDM Principles;2023 Radiation and Scattering of Electromagnetic Waves (RSEMW);2023-06-26

2. Transmission Data in 3D Channel Using Adaptive Algorithm Based on The MIMO-OFDM in a Densely Built-Up Area;2023 Radiation and Scattering of Electromagnetic Waves (RSEMW);2023-06-26

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