arXiv subjects

Amirsadegh Roshanzamir

Publications and source records attributed to Amirsadegh Roshanzamir.

3 recordsLinked to original sources

arXiv2023

Beampattern Design in Non-Uniform MIMO Communication

In recent years and with introduction of 5G cellular network and communication, researchers have shown great interest in Multiple Input Multiple Output (MIMO) communication, an advanced technology. Many studies have examined the problem of designing the beampattern for MIMO communication using uniform arrays and the covariance-based method to concentrate the transmitted power to the users. However, this paper aims to tackle this issue in the context of non-uniform arrays. Previous authors have primarily focused on designing the transmitted beampattern based on the cross-correlation matrix of transmitted signal elements. In contrast, this paper suggests optimizing the positions of transmitted antennas along with the cross-correlation matrix. This approach is expected to produce better results.

eess.SP↗

arXiv2023

Advantages of Machine Learning in Bus Transport Analysis

Supervised Machine Learning is an innovative method that aims to mimic human learning by using past experiences. In this study, we utilize supervised machine learning algorithms to analyze the factors that contribute to the punctuality of Tehran BRT bus system. We gather publicly available datasets of 2020 to 2022 from Municipality of Tehran to train and test our models. By employing various algorithms and leveraging Python's Sci Kit Learn and Stats Models libraries, we construct accurate models capable of predicting whether a bus route will meet the prescribed standards for on-time performance on any given day. Furthermore, we delve deeper into the decision-making process of each algorithm to determine the most influential factor it considers. This investigation allows us to uncover the key feature that significantly impacts the effectiveness of bus routes, providing valuable insights for improving their performance.

cs.LG↗

arXiv2023

Analysing of 3D MIMO Communication Beamforming in Linear and Planar Arrays

Massive multiple-input multiple-output (MIMO) systems are expected to play a crucial role in the 5G wireless communication systems. These advanced systems, which are being deployed since 2021, offer significant advantages over conventional communications generations. Unlike previous versions of communication, MIMO systems can transmit various probing signals through their antennas, which may or may not be correlated with each other. This waveform diversity provided by MIMO communication enables enhanced capabilities and improved performance. Numerous research papers have proposed different approaches for beamforming in MIMO communication. We anticipate that our research will provide valuable insights into the performance of different beamforming techniques for MIMO communication systems with planar arrays. We will investigate the 3D beam patterns generated by these constellations using the covariance-based MIMO communication waveform method. MATLAB simulations will be utilized to analyze and evaluate the performance of these methods.

eess.SP↗