Anggun Fitrian Isnawati, Mas Aly Afandi, Khoirun Ni'amah, Heru Adi Prasety
{"title":"GFDM-OQAM Performance Analysis Using Linear Equalization for Audio Transmission","authors":"Anggun Fitrian Isnawati, Mas Aly Afandi, Khoirun Ni'amah, Heru Adi Prasety","doi":"10.12720/jcm.19.1.44-52","DOIUrl":"https://doi.org/10.12720/jcm.19.1.44-52","url":null,"abstract":"","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"11 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140523895","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}
—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.
{"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}
{"title":"Impact of Mobility Model on LoRaWan Performance","authors":"Abdelouahab Nouar, Mounir Tahar Abbes, Selma Boumerdassi, Mostefa Chaib","doi":"10.12720/jcm.19.1.7-18","DOIUrl":"https://doi.org/10.12720/jcm.19.1.7-18","url":null,"abstract":"","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"53 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140527339","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}
{"title":"Joint Time Delay and Frequency Estimation Based on Deep Learning","authors":"Mahmoud M. Qasaymeh, Ahmad Falah Aljaafreh","doi":"10.12720/jcm.19.1.1-6","DOIUrl":"https://doi.org/10.12720/jcm.19.1.1-6","url":null,"abstract":"","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"67 3-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140516315","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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.705-713
Priyadarshini K. Desai, Bindu S.
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.
{"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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.689-696
Sathya P., Rajalakshmi S.
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.
{"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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.697-704
Mia Galina, Muhamad Asvial, Muhammad Suryanegara, Naufan Raharya
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.
{"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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.739-747
Shu-Ming Tseng, Yung-Chung Wang, Cheng-Yu Yu, Yu-Fu Liu
There is memory impulse noise in urban outdoor/indoor mobile channels, underwater acoustic channels, powerline communications (PLC) channels, etc. The prior works about network performance evaluation in impulse noise channels considered both the impulse noise in the physical (PHY) layer and CSMA/CA in the media access control (MAC) layer but they used simpler memoryless impulse noise model. In this paper, we propose to use 3-D Markov chain and power iteration method to analyze the throughput of CSMA/CA protocols with finite queue and more general memory impulse noise. The numerical results show that when the impulse noise is strong (impulse noise to Gaussian noise ratio R=150), the normalized throughput would be significantly lower than the case without impulse noise (R=0). Therefore, throughput analysis considering the impulse noise effect is essential.
{"title":"Performance Evaluation CSMA/CA in MAC Layer and Markov Gaussian Memory Impulse Noise Channels in PHY Layer","authors":"Shu-Ming Tseng, Yung-Chung Wang, Cheng-Yu Yu, Yu-Fu Liu","doi":"10.12720/jcm.18.11.739-747","DOIUrl":"https://doi.org/10.12720/jcm.18.11.739-747","url":null,"abstract":"There is memory impulse noise in urban outdoor/indoor mobile channels, underwater acoustic channels, powerline communications (PLC) channels, etc. The prior works about network performance evaluation in impulse noise channels considered both the impulse noise in the physical (PHY) layer and CSMA/CA in the media access control (MAC) layer but they used simpler memoryless impulse noise model. In this paper, we propose to use 3-D Markov chain and power iteration method to analyze the throughput of CSMA/CA protocols with finite queue and more general memory impulse noise. The numerical results show that when the impulse noise is strong (impulse noise to Gaussian noise ratio R=150), the normalized throughput would be significantly lower than the case without impulse noise (R=0). Therefore, throughput analysis considering the impulse noise effect is essential.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"42 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135456714","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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.722-738
Hamdan Hejazi, László Bokor
The interaction between Vulnerable Road Users (VRUs) and smart intersection participants, such as vehicles and drivers in Cooperative Intelligent Transportation Systems (C-ITS), is one of the main tools in solutions for increasing road safety and minimizing the number of possible road accidents. Vehicle-to-Everything (V2X) communication of advanced C-ITS architectures includes Vehicle-to-Pedestrian (V2P) context for extensive information exchange between road users. V2P employs various direct, indirect, and hybrid communication technologies and uses different techniques to interact with multiple traffic participants, infrastructure, traffic light controllers, and especially VRUs, during unpredictable situations. To address emerging technologies and applications of collaborative smart intersections and explore novel C-ITS solutions designed for this domain, the paper analyses available surveys and introduces the relevant communication schemes, use cases, and recent deployment efforts.
{"title":"V2X-Equipped Smart Intersections − Survey of Surveys, Use Cases, and Deployments","authors":"Hamdan Hejazi, László Bokor","doi":"10.12720/jcm.18.11.722-738","DOIUrl":"https://doi.org/10.12720/jcm.18.11.722-738","url":null,"abstract":"The interaction between Vulnerable Road Users (VRUs) and smart intersection participants, such as vehicles and drivers in Cooperative Intelligent Transportation Systems (C-ITS), is one of the main tools in solutions for increasing road safety and minimizing the number of possible road accidents. Vehicle-to-Everything (V2X) communication of advanced C-ITS architectures includes Vehicle-to-Pedestrian (V2P) context for extensive information exchange between road users. V2P employs various direct, indirect, and hybrid communication technologies and uses different techniques to interact with multiple traffic participants, infrastructure, traffic light controllers, and especially VRUs, during unpredictable situations. To address emerging technologies and applications of collaborative smart intersections and explore novel C-ITS solutions designed for this domain, the paper analyses available surveys and introduces the relevant communication schemes, use cases, and recent deployment efforts.","PeriodicalId":53518,"journal":{"name":"Journal of Communications","volume":"53 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135455948","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}
Pub Date : 2023-11-01DOI: 10.12720/jcm.18.11.676-688
Mohammed A. Aljubouri, Mahmoud Z. Iskandarani
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.
现代通信系统的目标是通过通信通道快速有效地将信息从一点传递到另一点。移动无线用户可以在移动时始终连接到网络。这就需要通过无线网络和卫星传输数字材料，随着时间的推移，这已经成为一个重大问题。本研究的主要目的是比较OFDM与其他编码方案(如LDPC、Turbo和Convolution)的性能和效率。在此仿真中，将多种形式的调制，如编码率为0.663、误码率为0.001、0.59 dB Eb/No、效率为1.326的4 QPSK，与LDPC、Turbo和Convolution编码进行了比较。在随后的模拟比较中，16 QAM编码率为0.479,BER为0.001,Eb/No为3.26 dB，效率为1.914。采用独一无二的LDPC码率0.313，效率为1.25,BER为0.001,Eb/No为0.65 dB，仿真结果证明，与卷积码和Turbo码相比，使用LDPC和16 QAM的BER和Eb/No的编码效率更高。这项工作的独特贡献是在三种不同的编码技术(LDPC、Turbo和Convolution)下使用3GPP页的未经尝试的速率，从而在OFDM、QPSK和16 QAM下降低了每AWGN信道的误码率。仿真实现了一种基于AWGN信道噪声的常规OFDM系统，并在MATLAB中进行了仿真。
{"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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：