The escalating demand for swift and dependable wireless internet access has spurred the development of various protocols within 802.11 WLANs. Among them, the 802.11ac protocols have gained widespread acceptance over the past few years, offering enhanced data transfer rates compared to the 802.11n standard. However, the persistent congestion of wireless IoT devices, particularly in densely populated areas, remains a significant challenge. To tackle this issue, IEEE 802.11 has advanced IEEE 802.11ax as the successor to 802.11ac, introducing critical enhancements at the PHY/MAC layers to improve throughput in dense scenarios. Additionally, modelling and simulating these protocols are vital for WLAN researchers and designers to anticipate link characteristics effectively, fostering high-performance WLAN design. The need for such tools led to the creation of diverse network simulation programs, and NS-2 is widely accepted as an open-source program that has achieved remarkable success in research. In this paper, we focus on various connection properties of 802.11ax WLANs through NS-3 simulations, including MCSs, bonded channels, GI, data encoding, antennas, data rates, link distance, Tx/Rx power, gain, and payload size. We also compare their performance against 802.11ac, which demonstrates that NS-3 accurately supports most 802.11ax capabilities and outperforms 802.11ac in various scenarios.
{"title":"Comparative Performance Analysis of the IEEE802.11ax and 802.11ac MIMOLink for WLANs","authors":"Md. Delowar Hossain, Sumon Kumar Debnath, Iffat Ara Badhan, Md. Monirul Islam, Ad. Ahsan Habib, Md. Sharif Uddin, Md. Abul Munjer, Prodip Kumar Sarker, Ileas Pramanik, Mutia Afroze Alin","doi":"10.5121/ijans.2023.13401","DOIUrl":"https://doi.org/10.5121/ijans.2023.13401","url":null,"abstract":"The escalating demand for swift and dependable wireless internet access has spurred the development of various protocols within 802.11 WLANs. Among them, the 802.11ac protocols have gained widespread acceptance over the past few years, offering enhanced data transfer rates compared to the 802.11n standard. However, the persistent congestion of wireless IoT devices, particularly in densely populated areas, remains a significant challenge. To tackle this issue, IEEE 802.11 has advanced IEEE 802.11ax as the successor to 802.11ac, introducing critical enhancements at the PHY/MAC layers to improve throughput in dense scenarios. Additionally, modelling and simulating these protocols are vital for WLAN researchers and designers to anticipate link characteristics effectively, fostering high-performance WLAN design. The need for such tools led to the creation of diverse network simulation programs, and NS-2 is widely accepted as an open-source program that has achieved remarkable success in research. In this paper, we focus on various connection properties of 802.11ax WLANs through NS-3 simulations, including MCSs, bonded channels, GI, data encoding, antennas, data rates, link distance, Tx/Rx power, gain, and payload size. We also compare their performance against 802.11ac, which demonstrates that NS-3 accurately supports most 802.11ax capabilities and outperforms 802.11ac in various scenarios.","PeriodicalId":499997,"journal":{"name":"International journal of AdHoc networking systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136319811","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}
Orthogonal frequency division multiplexing (OFDM) is a widely used multicarrier modulation (MCM) technique in the field of wireless communications, specifically designed to facilitate high-speed data transmission. The use of several subcarriers inside an OFDM system for the transmission of modulated symbols results in the generation of OFDM signals with a significant peak-to-average power ratio (PAPR). In this study, we propose a novel approach for mitigating the high PAPR in wireless communication systems (WCS). Our method utilizes a partial transmit sequence (PTS) strategy, which is enhanced by using an adaptive particle swarm optimization (PSO) algorithm. In this study, we present a description of an OFDM system employing the standard PTS technique in conjunction with PSO. To mitigate computational complexity, the suggested methodology efficiently explores the optimal amalgamation of phase rotation components. Experimental findings demonstrate that the computational complexity and PAPR have been greatly minimized by the suggested method.
{"title":"PAPR, Spectral Efficiency, BER and SNR Analysis of OFDM: A Novel Partial Transmit Sequence-Particle Swarm Optimization Technique","authors":"Karthik Kumar Vaigandla, Ranjith Kumar Siddoju, Madhu Kumar Vanteru, Malothu Devsingh, Dudimetla Prasad","doi":"10.5121/ijans.2023.13402","DOIUrl":"https://doi.org/10.5121/ijans.2023.13402","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is a widely used multicarrier modulation (MCM) technique in the field of wireless communications, specifically designed to facilitate high-speed data transmission. The use of several subcarriers inside an OFDM system for the transmission of modulated symbols results in the generation of OFDM signals with a significant peak-to-average power ratio (PAPR). In this study, we propose a novel approach for mitigating the high PAPR in wireless communication systems (WCS). Our method utilizes a partial transmit sequence (PTS) strategy, which is enhanced by using an adaptive particle swarm optimization (PSO) algorithm. In this study, we present a description of an OFDM system employing the standard PTS technique in conjunction with PSO. To mitigate computational complexity, the suggested methodology efficiently explores the optimal amalgamation of phase rotation components. Experimental findings demonstrate that the computational complexity and PAPR have been greatly minimized by the suggested method.","PeriodicalId":499997,"journal":{"name":"International journal of AdHoc networking systems","volume":"62 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136319810","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 : 2023-07-27DOI: 10.5121/ijans.2023.13301
Sangheethaa S
MANET- Mobile Ad-hoc Networks are famous for their infrastructure-less arrangement for communication. In this network, nodes are self-organized and can act as router. They are battery operated and self-organizing. Block chain is a new concept from 2008 and researchers are trying the possible application of Block chain in many sectors including MANETs. This paper surveys the existing researches done in applying block chain in a MANET environment. Block chain is mainly used in MANETs for improving security while routing packets from one node to another. Some researchers have proposed trust models using block chain. This paper reviews some of the existing approaches where block chain is used in MANETs for routing the packets, creating trust models, and dealing with network partitioning problem and scalability problem. This paper acts as a review paper to study on block chain applications in MANET.
{"title":"A Comparative Study for Block Chain Applications in the MANET","authors":"Sangheethaa S","doi":"10.5121/ijans.2023.13301","DOIUrl":"https://doi.org/10.5121/ijans.2023.13301","url":null,"abstract":"MANET- Mobile Ad-hoc Networks are famous for their infrastructure-less arrangement for communication. In this network, nodes are self-organized and can act as router. They are battery operated and self-organizing. Block chain is a new concept from 2008 and researchers are trying the possible application of Block chain in many sectors including MANETs. This paper surveys the existing researches done in applying block chain in a MANET environment. Block chain is mainly used in MANETs for improving security while routing packets from one node to another. Some researchers have proposed trust models using block chain. This paper reviews some of the existing approaches where block chain is used in MANETs for routing the packets, creating trust models, and dealing with network partitioning problem and scalability problem. This paper acts as a review paper to study on block chain applications in MANET.","PeriodicalId":499997,"journal":{"name":"International journal of AdHoc networking systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135756111","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}
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