Journal of Communications最新文献_第4页

GFDM-OQAM Performance Analysis Using Linear Equalization for Audio Transmission 利用线性均衡进行音频传输的 GFDM-OQAM 性能分析

Journal of Communications Pub Date : 2024-01-01 DOI: 10.12720/jcm.19.1.44-52

Anggun Fitrian Isnawati, Mas Aly Afandi, Khoirun Ni'amah, Heru Adi Prasety

引用次数: 0

Efficient and Accurate Indoor Positioning System: A Hybrid Approach Integrating PCA, WKNN, and Linear Regression 高效准确的室内定位系统：整合 PCA、WKNN 和线性回归的混合方法

Journal of Communications Pub Date : 2024-01-01 DOI: 10.12720/jcm.19.1.37-43

Thi Hang Duong, Anh Vu Trinh, Manh Kha Hoang

{"title":"Efficient and Accurate Indoor Positioning System: A Hybrid Approach Integrating PCA, WKNN, and Linear Regression","authors":"Thi Hang Duong, Anh Vu Trinh, Manh Kha Hoang","doi":"10.12720/jcm.19.1.37-43","DOIUrl":"https://doi.org/10.12720/jcm.19.1.37-43","url":null,"abstract":"—The high-precision Indoor Positioning System (IPS) is a captivating area of research that has made significant advancements in recent years due to the increasing demand for its applications. Our study proposes an innovative approach to improve indoor positioning accuracy by integrating Principal Component Analysis (PCA), weighted k-nearest Neighbors (WKNN), and Linear Regression (PCA-WLR). This hybrid strategy enables the system to leverage the unique characteristics of each model, capturing intricate patterns and correlations in the data. Experimental evaluations on a publicly available dataset demonstrate the superiority of our hybrid approach. The Root Mean Squared Error (RMSE) achieved is 1.97 meters, and the mean distance error is 2.23 meters. Remarkably, the ensemble outperforms individual methods in other studies on the same dataset, showing 10.8% to 17.2% improvement in accuracy. Notably, our proposed hybrid approach significantly reduces training time from 581.3599 seconds to 8.8814 seconds, representing an impressive reduction of approximately 98.47%. Similarly, testing time is reduced from 10.1721 seconds to 0.0176 seconds, indicating a substantial decrease of around 99.82%. These significant reductions in training and testing times underscore the efficiency and effectiveness of our proposed ensemble model, making it highly practical for real-time applications.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"2017 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140516154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Mobility Model on LoRaWan Performance 移动模式对 LoRaWan 性能的影响

Journal of Communications Pub Date : 2024-01-01 DOI: 10.12720/jcm.19.1.7-18

Abdelouahab Nouar, Mounir Tahar Abbes, Selma Boumerdassi, Mostefa Chaib

引用次数: 0

Joint Time Delay and Frequency Estimation Based on Deep Learning 基于深度学习的联合时延和频率估计

Journal of Communications Pub Date : 2024-01-01 DOI: 10.12720/jcm.19.1.1-6

Mahmoud M. Qasaymeh, Ahmad Falah Aljaafreh

引用次数: 1

Design and Fabrication of a 2-Port Multiple Antenna System for mmWave Application 毫米波应用的2端口多天线系统的设计与制造

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.705-713

Priyadarshini K. Desai, Bindu S.

{"title":"Design and Fabrication of a 2-Port Multiple Antenna System for mmWave Application","authors":"Priyadarshini K. Desai, Bindu S.","doi":"10.12720/jcm.18.11.705-713","DOIUrl":"https://doi.org/10.12720/jcm.18.11.705-713","url":null,"abstract":"The next-generation wireless communication technology heading towards the mmWave band requires multiple antenna systems to achieve high diversity, high data rates, and reliability. The design of multiple antenna systems is always associated with the problem of mutual coupling between antenna elements. In order to achieve better system performance, the mutual coupling between the elements has to be minimized. This work basically aims to minimize the mutual interaction among the antenna elements. A 2-port multiple antenna system is presented, with the defected ground structure as a decoupling technique, in order to minimize the mutual coupling. The single microstrip patch antenna is initially designed to operate at 24 GHz; later, it is transformed into a 2-port multiple antenna system. The transformed 2-port multiple antenna is loaded with the defective ground structure. The designed antenna system is fabricated, and practical measurements are carried out. The isolation achieved with defective ground structure through simulation is −27dB, and the practical measured value is −40dB. The 2-port multiple antenna system performance is assessed through the following metrics: Envelope Correlation Coefficient(ECC), Diversity Gain(DG), and Channel Capacity Loss(CCL). For the proposed 2-port multiple antenna the obtained values of ECC, DG and CLL are 0.004, 9.99dB and 0.4 bit/s/Hz. The results of the simulated structure are in good agreement with the fabricated structure. The result shows that defective ground is the better technique to achieve isolation between the closely placed antennas. The defective ground structure is the simplest technique in comparison with other techniques, such as metamaterial, energy band gap etc. The major novelty of the work includes, the design of a 2-port multiple antenna system with single slot and achieving the isolation more than −47dB without affecting the antenna resonating frequency.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"42 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135456712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Non-invasive Physiological Parameter Monitoring System Using IoT and Blynk App 基于物联网和Blynk App的智能无创生理参数监测系统

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.689-696

Sathya P., Rajalakshmi S.

{"title":"Smart Non-invasive Physiological Parameter Monitoring System Using IoT and Blynk App","authors":"Sathya P., Rajalakshmi S.","doi":"10.12720/jcm.18.11.689-696","DOIUrl":"https://doi.org/10.12720/jcm.18.11.689-696","url":null,"abstract":"This work aims to provide an advanced, portable and non-invasive multiple physiological parameters monitoring system using the Internet of Things (IoT) platform and Blynk App. The device detects essential physiological parameters non-invasively including heart rate (bpm), blood oxygen saturation (SpO2), blood glucose (mg/dL) and body temperature (C or F) from a person’s finger, peripheral part of the body or forehead. The sensors like pulse oximeter MAX30100 to read both heart rate and blood oxygen saturation, MLX9606 for sensing the body temperature and IR sensors to interpret blood glucose by near infrared optical method, have been calibrated and integrated with Arduino microprocessor and node MCU. The signal from the device is then sent to the Blynk App installed in an Android phone via a Wi-Fi connection, allowing the user to record and monitor the data. Test results showed that the device is capable of sensing and monitoring the physiological parameters and can transmit real time data instantly after sensing to the user. This non-invasive method of sensing parameters showed an average accuracy of 99.2% in temperature measurement, 99.07% in blood oxygen saturation level measurement and 90.52% in blood glucose measurement.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"41 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135456719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and Analysis of Outage Probability and Achievable Rate for UAV Relay Implementation in Disaster Areas 无人机中继在灾区实施的中断概率和可实现率的开发与分析

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.697-704

Mia Galina, Muhamad Asvial, Muhammad Suryanegara, Naufan Raharya

{"title":"Development and Analysis of Outage Probability and Achievable Rate for UAV Relay Implementation in Disaster Areas","authors":"Mia Galina, Muhamad Asvial, Muhammad Suryanegara, Naufan Raharya","doi":"10.12720/jcm.18.11.697-704","DOIUrl":"https://doi.org/10.12720/jcm.18.11.697-704","url":null,"abstract":"Unmanned aerial vehicles (UAV) coupled with wireless networks have offered the potential for forthcoming mobile communications networks. The UAV-assisted wireless communication technology approach is an option for maintaining communication services, one of which is for disaster areas. This study aims to investigate the deployment of UAV-assisted communications in disaster areas. The simulation in this work is focused on investigating the relationship between the UAV’s height or radius and the outage probability and achievable rate. We identifies a UAV that behaves as a relay in a disaster area connected to two users, identified several critical parameters, such as UAV height, radius, and SNR value, and investigated the impact of changing each of them on outage probability and achievable rate values. Finally, we simulates the effect of these critical parameters on outage probability and achievable rate to maximize the use of UAV-assisted communication as a disaster management solution. According to the simulation results, as the signal to noise (SNR) increases, the probability of network communication interference decreases, and the achievable level increases. Moreover, increasing the range of UAVs can improve communication performance by reducing the probability of outages and increasing the achievable rate.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"53 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135455950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation CSMA/CA in MAC Layer and Markov Gaussian Memory Impulse Noise Channels in PHY Layer 性能评价CSMA/CA在MAC层和马尔科夫高斯记忆脉冲噪声信道在物理层

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.739-747

Shu-Ming Tseng, Yung-Chung Wang, Cheng-Yu Yu, Yu-Fu Liu

引用次数: 0

V2X-Equipped Smart Intersections − Survey of Surveys, Use Cases, and Deployments 配备v2x的智能十字路口—调查、用例和部署的调查

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.722-738

Hamdan Hejazi, László Bokor

引用次数: 0

Performance Evaluation of Coded OFDM Using 4QPSK and 16QAM 采用4QPSK和16QAM的编码OFDM性能评价

Journal of Communications Pub Date : 2023-11-01 DOI: 10.12720/jcm.18.11.676-688

Mohammed A. Aljubouri, Mahmoud Z. Iskandarani

{"title":"Performance Evaluation of Coded OFDM Using 4QPSK and 16QAM","authors":"Mohammed A. Aljubouri, Mahmoud Z. Iskandarani","doi":"10.12720/jcm.18.11.676-688","DOIUrl":"https://doi.org/10.12720/jcm.18.11.676-688","url":null,"abstract":"The goal of modern communication systems is to transmit information from one point to another through a communication channel quickly and effectively. Mobile wireless users will move around while always being connected to the network. This necessitates the transmission of digital material through wireless networks and satellites, which has grown to be a significant problem over time. The main goal of this study is to compare the performance and efficiency of OFDM to that of other coding schemes, such as LDPC, Turbo, and Convolution. In this simulation, multiple forms of modulation, such as 4 QPSK with a coding rate of 0.663 and a BER of 0.001 at 0.59 dB Eb/No and an efficiency of 1.326, were compared with LDPC, Turbo, and Convolution codes. The performance is improved in the following simulated comparison of 16 QAM with a coding rate of 0.479, which has a BER of 0.001, an Eb/No of 3.26 dB, and an efficiency of 1.914. Using unique, not tried before LDPC code rate of 0.313, with efficiency of 1.25, 0.001 BER, and Eb/No, of 0.65 dB, the simulation proved that the performance of BER and Eb/No, using LDPC and 16 QAM results in a more efficient coding compared with Convolution code and Turbo code. This work has the unique contribution of using untried rates from the 3GPP sheet under three different coding techniques (LDPC, Turbo, and Convolution), which resulted in a lower BER per AWGN channel under OFDM, QPSK, and 16 QAM. The simulation implemented a regular OFDM system over AWGN channel noise, which was done in MATLAB.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"42 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135456711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0