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Artículos de revistas sobre el tema "IEEE802.11p"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 4 de mayo de 2024

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1

Mohi Uddin, Khandaker Mohammad, Nayeema Islam, Nur-A. Alam y Jahanara Akhtar. "Performance Comparison of IEEE802.11a, IEEE802.11b, IEEE802.11g and IEEE802.11n in Multiple Routers". Asian Journal of Applied Science and Technology 04, n.º 04 (2020): 65–72. http://dx.doi.org/10.38177/ajast.2020.4406.

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2

Ali Mohammed, Almutaz y Ibrahim Elimam Abdalla. "Performance Analysis of FTP, HTTP and Database for IEEE802.11, IEEE802.11a, IEEE802.11b and IEEE802.11g using OPNET Simulator". International Journal of Computer Trends and Technology 38, n.º 2 (25 de agosto de 2016): 57–62. http://dx.doi.org/10.14445/22312803/ijctt-v38p111.

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3

Yoon, Sanghun, Seongkeun Jin, Daegyo Shin y Kitaeg Lim. "Diversity modem for IEEE802.11p WAVE". Journal of IKEEE 18, n.º 4 (31 de diciembre de 2014): 495–501. http://dx.doi.org/10.7471/ikeee.2014.18.4.495.

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4

Ammar, F. y Hanafi Hanafi. "ANALISIS TRANSFER RATE WIRELESS LOCAL AREA NETWORK DENGAN STANDAR IEEE 802.11A DAN IEEE 802.11G PADA KANAL LINE OF SIGHT". Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) 3, n.º 1 (26 de abril de 2016): 31–39. http://dx.doi.org/10.33019/ecotipe.v3i1.28.

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WiFi bekerja pada band 2,4 GHz dan 5 GHz. Standar WiFi yang bekerja pada frekuensi ini antara lain IEEE802.11g dan IEEE802.11a. Pada penelitian ini dilakukan pengukuran terhadap transfer rate download dan upload data dengan standar IEEE802.11g dan IEEE802.11a. Pengukuran dilakukan pada kanal Line of Sight (LOS), menggunakan dua buah laptop yang dihubungkan dengan Access Point (AP) standar IEEE802.11g dan IEEE802.11a. Hasil penelitian diperoleh, pada standar IEEE802.11g, transfer rate download dan upload data tertinggi 2.662,54.KB/s dan 2.549,60 KB/s, dan terendah 484,50.KB/s dan 477,40 KB/s, sedangkan pada standar IEEE802.11a, transfer rate download dan upload data tertinggi 8.104,68 KB/s dan 5.744,24 KB/s, dan terendah 872,24 KB/s dan 465,38.KB/s. Pada standar IEEE802.11g, transfer rate download dan upload data pada sinyal terendah hingga di bawah 35% dan 30%, dari transfer rate download dan upload data tertinggi. Pada standar IEEE802.11a, transfer rate download dan upload data pada kualitas sinyal terendah hingga di bawah 20% dan 30%, dari transfer rate download dan upload data tertinggi. Kemampuan transfer rate download data Standar IEEE802.11a, 2–3 kali lebih baik pada kondisi kualitas sinyal tertinggi, dan tidak lebih dari 2 kali pada kondisi kualitas sinyal terendah, dibandingkan kemampuan transfer rate download data standar IEEE802.11g. Kemampuan transfer rate upload data Standar IEEE802.11a, 1,4–3 kali lebih baik pada kondisi kualitas sinyal tertinggi, dan 1-3 kali lebih baik pada kondisi kualitas sinyal terendah, dibandingkan kemampuan transfer rate upload data standar IEEE802.11g.

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5

Yadav, Shalini, Rahul Rishi, Yudhvir Singh, Zaid khudhur Hussein, Ahmed Ayoob Ibrahim y Sajjad Ali Ettyem. "Traffic Management in Ad-Hoc Network by Selection of Suitable Routing Protocol". Journal of Physics: Conference Series 2322, n.º 1 (1 de agosto de 2022): 012096. http://dx.doi.org/10.1088/1742-6596/2322/1/012096.

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Abstract The need for traffic management has risen at the same pace as the number of cars has changed dramatically. Even though VANET and MANET have seen tremendous growth, traffic management is still essential. There is a demand for effective traffic management among the vehicles, which necessitates their communication ability. Routing protocols facilitate the transmission of data between vehicles. There are several routing protocols in a MANET, and choosing the optimal one is challenging. The IEEE802.11p standard is used for data transfer via routing protocols in the current operational environment. C-V2X is a developing technology superior to IEEE802.11p in terms of efficiency. Qualcomm is the creator of C-V2X. AODV, AMODV, and MDART are some appropriate routing protocols for evaluation. The Average End-to-End Delay, Average Throughput, and Packet Delivery Ratio of each protocol are analyzed. The Network Simulator 2.35 (NS2) simulates these routing protocols. This article concludes that the performance of C-V2X using AOMDV protocols is superior to that of IEEE802.11p. This research claims that AOMDV’s architecture might be improved to provide more accurate figures for the average end-to-end latency.

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6

Alwer, Abdulkader O., Jawad Rasheed, Adnan M. Abu-Mahfouz y Parvaneh Shams. "Study and Evaluation of Quality of Services in Mobile Internet Protocol v6 Using IEEE802.11e". Wireless Communications and Mobile Computing 2022 (17 de noviembre de 2022): 1–11. http://dx.doi.org/10.1155/2022/3092512.

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Mobile Internet Protocol v6 (MIPv6) is a protocol that allows a mobile node (MN) to transparently maintain connections while moving from one subnet to another. Using the route optimization (RO) method in MIPv6 gives optimized routing and helps avoid triangular routing. In real-time applications such as video conference applications, quality of service (QoS) issues will increase especially in the handover process between subnets. This study investigates the performance of MIPv6 handover in IEEE802.11e standard in wireless environments. The investigation considers that handover for the MN moves between 2 home agents (HA). The system model’s fundamental performance limits are measured by packet delay variation, HA binding delay, and wireless local area network (WLAN) media access delay analysis metrics in video conference applications. According to the results of real-time simulations, network performance during the handover process can be effectively improved as the packet lost during handover decreased significantly from 43% in IEEE802.11b distributed coordination function (DCF) to 36% in IEEE802.11e hybrid coordination function (HCF). Furthermore, experimental results prove that IEEE802.11e connects to new HA roughly 20% quicker than IEEE802.11b, and IEEE802.11b has 100 times more time delay than IEEE802.11e. In addition to this, the WLAN media access delay of IEEE802.11b often reaches 0.00011 s as compared to 0.000005 s of IEEE802.11e. Thus, it is evident that the performance of IEEE802.11e in terms of packet delay variation, HA binding delay, and WLAN media access delay is better than IEEE802.11b. Likewise, it is noted that network speed during the handover process in IEEE802.11e can be considerably improved in a MIPv6 scenario.

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7

Yoon, Sang-Hun, Seong-Keun Jin, Dae-Kyo Shin, Ki-Taeg Lim y Han-Gyun Jung. "Decision Feedback Based Diversity Modem for IEEE802.11p WAVE". Journal of IKEEE 19, n.º 3 (30 de septiembre de 2015): 400–406. http://dx.doi.org/10.7471/ikeee.2015.19.3.400.

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8

Jin, Seong-Keun, Sang-Hun Yoon y Dae-Kyo Shin. "Performances of Various AGC Algorithms for IEEE802.11p WAVE". Journal of IKEEE 18, n.º 4 (31 de diciembre de 2014): 502–8. http://dx.doi.org/10.7471/ikeee.2014.18.4.502.

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9

Cui, Xuerong, Juan Li y Bing Li. "Wireless Ranging Method for Vehicular Node based-on IEEE802.11p Short Preamble". Procedia Computer Science 129 (2018): 115–22. http://dx.doi.org/10.1016/j.procs.2018.03.087.

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10

Husain, Akhtar y S. C. Sharma. "Simulated Analysis of Location and Distance Based Routing in VANET with IEEE802.11p". Procedia Computer Science 57 (2015): 323–31. http://dx.doi.org/10.1016/j.procs.2015.07.346.

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11

Jin, Li, Guoan Zhang y Xiaojun Zhu. "Formal analysis and evaluation of the back-off procedure in IEEE802.11P VANET". Modern Physics Letters B 31, n.º 19-21 (27 de julio de 2017): 1740063. http://dx.doi.org/10.1142/s0217984917400632.

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The back-off procedure is one of the media access control technologies in 802.11P communication protocol. It plays an important role in avoiding message collisions and allocating channel resources. Formal methods are effective approaches for studying the performances of communication systems. In this paper, we establish a discrete time model for the back-off procedure. We use Markov Decision Processes (MDPs) to model the non-deterministic and probabilistic behaviors of the procedure, and use the probabilistic computation tree logic (PCTL) language to express different properties, which ensure that the discrete time model performs their basic functionality. Based on the model and PCTL specifications, we study the effect of contention window length on the number of senders in the neighborhood of given receivers, and that on the station’s expected cost required by the back-off procedure to successfully send packets. The variation of the window length may increase or decrease the maximum probability of correct transmissions within a time contention unit. We propose to use PRISM model checker to describe our proposed back-off procedure for IEEE802.11P protocol in vehicle network, and define different probability properties formulas to automatically verify the model and derive numerical results. The obtained results are helpful for justifying the values of the time contention unit.

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12

Gopinath, A. Justin, B. Nithya, Harshit Mogalapalli y P. Kamalesh Khanna. "Channel Status based Contention Algorithm for Non-safety Applications in IEEE802.11p Vehicular Network". Procedia Computer Science 171 (2020): 1479–88. http://dx.doi.org/10.1016/j.procs.2020.04.158.

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13

Fapohunda, Kofoworola, Eberechukwu Numan Paulson, Zubair Suleiman, Oladimeji Saliu, David Michael y Kamaludin Mohammed Yusof. "Application of Bat Algorithm for The Detection of Hidden Nodes in IEEE802.11ah Networks". ELEKTRIKA- Journal of Electrical Engineering 18, n.º 1 (24 de abril de 2019): 11–15. http://dx.doi.org/10.11113/elektrika.v18n1.129.

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Hidden node problem sometimes referred to as frequent packets collision that mostly leads to loss of packets is no longer new in wireless networks because it affects the previous IEEE802.11 standards. The new IEEE802.11ah standard which is also a sub-standard of IEEE 802.11 is no exemption. As a matter of fact, IEEE802.11ah suffers from a hidden node problem more than networks (IEEE 802.11a/b/n/ac) due to their wider coverage which is up to 1km, high number of devices they can support (over 8000 nodes to one AP) and frequent simultaneous sleeping and sending of the nodes (power saving mode). A few researchers have worked on this hidden node problem in IEEE802.11ah but could not get a lasting solution to it. Therefore, this paper proposes an algorithm which detects hidden nodes and also proposes a theoretical solution based on previous works which was also experimentally verified through the BIHD-CM.

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14

Peng, Jiankui, Suoping Li, Zufang Dou y Sa Yang. "Optimization Design and Performance Analysis of Improved IEEE802.11p MAC Mechanism Based on High Mobility of Vehicle". Mathematical Problems in Engineering 2022 (16 de junio de 2022): 1–14. http://dx.doi.org/10.1155/2022/8974673.

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The high-speed movement of vehicles is the core factor affecting the rapid development of vehicular ad hoc network (VANET), especially the impact of vehicle mobility on data access and transmission performance. However, the classic IEEE802.11p data access and transmission protocol are still used in the multi-hop VANET under the highway system, which is adopted in the low-speed environment. Therefore, the impact of vehicle movement on the performance of the existing network is analyzed theoretically, and it is found that the network performance will be greatly reduced with the increase of vehicle speed. In order to improve the network performance in high-speed environment, an improved network access transmission protocol is proposed. Through Markov modeling, the analytic expressions of system delay, throughput, and packet loss rate are obtained. Finally, the effectiveness of the improved mechanism is verified by comparing the simulation results of two mechanisms.

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15

Ogawa, Masakatsu. "Saving Power in IEEE802.16m Mobile Routers by Coordinating with IEEE802.11". IEEJ Transactions on Electronics, Information and Systems 134, n.º 4 (2014): 543–49. http://dx.doi.org/10.1541/ieejeiss.134.543.

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16

Park, Jinsu, Seungho Han y Changick Song. "A Study on Field Trial Based on SDR Testbed for Performance Assessment of IEEE802.11p Receiver Channel Estimation Techniques". Journal of the Institute of Electronics and Information Engineers 57, n.º 4 (30 de abril de 2020): 3–12. http://dx.doi.org/10.5573/ieie.2020.57.4.3.

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17

Marefat, Alireza, Rafidah Md Noor, Nor Badrul Anuar y Nornazlita Hussin. "The Feasibility of Employing IEEE802.11p in Electronic-Based Congestion Pricing Zone: A Comparative Study with RFID". Malaysian Journal of Computer Science 29, n.º 4 (1 de diciembre de 2016): 247–61. http://dx.doi.org/10.22452/mjcs.vol29no4.1.

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18

Reha, Abdelati, Abdelkebir El Amri, Othmane Benhmammouch, Ahmed Oulad Said, Abdelhakim El Ouadih y Marouane Bouchouirbat. "CPW-fed H-tree fractal antenna for WLAN, WIMAX, RFID, C-band, HiperLAN, and UWB applications". International Journal of Microwave and Wireless Technologies 8, n.º 2 (5 de febrero de 2015): 327–34. http://dx.doi.org/10.1017/s175907871500001x.

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This paper presents three iterations of a coplanar waveguide-fed H-tree fractal antenna. Increasing the number of iterations allows us obtaining a multi-band and broad-band behavior. The proposed antennas are a good solution for wireless local area networks IEEE802.11 a/h/j/n/ac/y, worldwide interoperability for microwave access system IEEE802.16, radio frequency identification, C-band, high performance radio LAN, and ultra wideband applications. The simulations were performed in FEKO 6.3. The measurements were performed by the network analyzer HP 8719C.

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19

Choi, Jong-Young y Young-Bae Ko. "An Adaptive Safety Message Transmission Algorithm Based on Age-of-Information and Collision Risk-Level with Adjacent Vehicles in IEEE802.11p/WAVE Vehicular Networks". Journal of Korean Institute of Communications and Information Sciences 47, n.º 3 (31 de marzo de 2022): 471–73. http://dx.doi.org/10.7840/kics.2022.47.3.471.

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20

Caputo, Stefano, Lorenzo Mucchi, Muhammad Ali Umair, Marco Meucci, Marco Seminara y Jacopo Catani. "The Role of Bidirectional VLC Systems in Low-Latency 6G Vehicular Networks and Comparison with IEEE802.11p and LTE/5G C-V2X". Sensors 22, n.º 22 (8 de noviembre de 2022): 8618. http://dx.doi.org/10.3390/s22228618.

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In this paper, we present very recent results regarding the latency characterization of a novel bidirectional visible light communication (VLC) system for vehicular applications, which could be relevant in intelligent transportation system (ITS) safety applications, such as the assisted and automated braking of cars and motorbikes in critical situations. The VLC system has been implemented using real motorbike head- and tail-lights with distances up to 27 m in a realistic outdoor scenario. We performed a detailed statistical analysis of the observed error distribution in the communication process, assessing the most probable statistical values of expected latency depending on the observed packet error rate (PER). A minimum attainable observed round-trip latency of 2.5 ms was measured. Using our dataset, we have also estimated the probability to receive correctly a message with a specific average latency for a target PER, and we compare it to the ultra-reliable low-latency (URLL) 5G communications service. In addition, a mobility model is implemented to compare the VLC and radio frequency (RF) technologies (IEEE802.11p, LTE, 5G) to support an automated braking systems for vehicles in urban platooning.

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21

Zheng, Zhe, Wenpeng Cui, Lei Qiao y Jinghong Guo. "Performance and Power Consumption Analysis of IEEE802.11ah for Smart Grid". Wireless Communications and Mobile Computing 2018 (25 de julio de 2018): 1–8. http://dx.doi.org/10.1155/2018/5286560.

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IEEE802.11ah is a Wireless Local Area Network (WLAN) designed for the application of Internet of Things (IoT) and Machine to Machine (M2M), mainly used in sensor network, smart metering, car network, health care, and other emerging fields. IEEE802.11ah inherits the IEEE802.11n∖ac technology. At present, smart grid has completed the installation of optical fiber communication as its backbone network; WLAN can be used to build new wireless sensor network for smart grid by improving the transmission distance, speed, and power efficiency. The critical features of 802.11ah make it a powerful candidate for WLAN in smart grid, such as intelligent substation sensor network and automatic metering system (AMS). This paper simulates the new added highly robust 1MHz bandwidth and Modulation Coding Scheme (MCS) 10 in the 802.11ah physical layer and analyzes the coverage range and energy-saving performance of 802.11ah based on the simulation results. The analysis shows that the 802.11ah at 1 MHZ MCS 10 mode can obtain 2.5-3 dB gain. Combined with advantages of Sub-1GHz working frequency, 802.11ah could enlarge the coverage range by five times, compared to 2.4 GHz Wi-Fi. On the other side, 802.11ah module used in the smart grid can greatly reduce power consumption, especially in the AMS with a 1.1 kW.H power savings per year. 802.11ah not only provides the flexibility and low cost features of wireless communication, but also brings coverage and energy-saving performance improvements, which leads to good economic benefit.

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22

Воропай, О. В., С. С. Погасій, О. Г. Король y С. В. Мілевський. "Development of security mechanisms for scada systems in the postquantium period". Системи обробки інформації, n.º 2 (169) (9 de junio de 2022): 25–34. http://dx.doi.org/10.30748/soi.2022.169.03.

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The formation of new systems based on the synthesis of mobile Internet technologies with cyberspace significantly expands the possibilities of creating smart technologies based on mesh and sensor networks. This allows to significantly increase the speed of information transmission using modern wireless communication channels based on technology standards IEEE802.16, IEEE802.16e, IEEE802.15.4, IEEE802.11, Bluetooth 5, 6. It is possible to use SCADA automation and scheduling systems with new functions of managing information flows of various technological processes, to create new principles for building hyperphysical social systems (CPSS) – a set of subjects and objects of cybernetic, physical and social worlds that allow to form “smart” communities, on the one hand , and intellectual space on the other. However, the development of modern computer systems, the advent of full-scale quantum computers significantly impairs the security of modern security systems. According to NIST experts, a full-scale quantum computer breaks both symmetric and asymmetric cryptosystems in polynomial time, which significantly reduces their stability. The goal of the work is to develop mechanisms for providing security services based on post-quantum algorithms - crypto-code constructions. To ensure security in the post-quantum period – the emergence of a full-scale quantum computer, NIST specialists suggest the use of post-quantum algorithms. Structural schemes of crypto-code constructions of McEliece and Niederreiter on algebrogeometric codes are used in the work. The paper proposes mechanisms of post-quantum cryptography, which allow to ensure the stability of not only communication channels, but also elements of the structure of the management system of SCADA systems, not only in critical infrastructure, but also in modern wireless communication channels. The basis of post-quantum encryption algorithms is the combination of algorithms (schemes) of crypto-code structures with cryptosystems on unprofitable codes (multi-channel cryptography), as well as the possibility of combining them with digital steganography methods. The developed approach provides the ability to hide elements of management commands, and the use of different channels provides the ability to hide individual elements of cryptograms. The use of post-quantum encryption algorithms provides a significant increase in the cryptographic stability of security mechanisms SCADA-systems.

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23

Sharma, Manish, Yogendra Kumar Awasthi y Himanshu Singh. "Planar high rejection dual band-notch UWB antenna with X & Ku-bands wireless applications". International Journal of Microwave and Wireless Technologies 9, n.º 8 (2 de mayo de 2017): 1725–33. http://dx.doi.org/10.1017/s1759078717000393.

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In this paper, a vase-shaped monopole antenna is presented for dual band notch (WiMAX IEEE802.16 3.30–3.80 GHz with C-band 3.80–4.20 GHz and WLAN IEEE802.11a/h/j/n 5.15–5.35 GHz, 5.25–5.35 GHz, 5.47–5.725 GHz, 5.725–5.825 GHz) UWB and other wireless services (close range radar: 8–12 GHz in X-band & satellite communication: 12–18 GHz in Ku-band). Measured VSWR of proposed antenna shows a high band-rejection for WiMAX along with C-band with VSWR = 25.33 at 3.77 GHz and WLAN with VSWR = 6.0 at 5.64 GHz is achieved by cutting two C-shaped slots on the radiating patch. Designed antenna covers a wide usable fractional bandwidth 160% (2.58–20.39 GHz). Furthermore, the measured gain of antenna is relatively stable across the impedance bandwidth except band-notched. In addition, antenna offers omni-directional pattern, reasonably small 20 × 20 × 0.787 mm3and easy to construct structure.

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24

Khan, Muhammad Asghar, Tanweer Ahmad Cheema, Insaf Ullah, Fazal Noor, Sajjad Ur Rehman, Ateeq Ur Rehman y Muhammad Adnan Aziz. "A Dual-Mode Medium Access Control Mechanism for UAV-Enabled Intelligent Transportation System". Mobile Information Systems 2021 (15 de febrero de 2021): 1–13. http://dx.doi.org/10.1155/2021/5578490.

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With the exponential growth in technologies for the vehicular Internet of things applications and high demands for autonomous road vehicles, future transportation systems are projected to be revolutionized on a global scale. This new landscape requires a stable, flexible, and business-friendly base of connectivity, networking, and computing technology, in which Unmanned Aerial Vehicles (UAVs) can play an important role. A UAV-enabled Intelligent Transportation System (ITS) can provide a cost-effective communication solution to improve the safety and efficiency of the transportation system, particularly if the data traffic is nonhomogeneous and nonstationary. Typically, wireless is the communication medium between vehicles and UAVs in an ITS setting, which is based on the IEEE802.11p MAC protocol adopted by car manufactures. However, the IEEE 802.11p MAC protocol is modified solely for omnidirectional antennas, which restricts network coverage, delay, and throughput. In comparison, the directional antenna has greater network coverage, spatial reuse, and bandwidth. In addition, a multiaccess edge computing (MEC) facility at the backhaul link will provide ultralow latency and high bandwidth services to meet the increasingly growing demand for latency-sensitive vehicle applications such as vehicular video data analytics, autonomous driving, and intelligent navigation. Therefore, this article aims to propose a novel dual-mode MAC protocol that can work in two antenna modes, i.e., directional and omnidirectional. For modeling and simulation purposes, we use the Optimized Network Engineering Tool (OPNET) and aim to seek an evaluation with respect to throughput, media access delay, and retransmission attempts. The results obtained demonstrate the effectiveness of the proposed scheme.

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25

Adachi, Tomoko. "IEEE802.11n". Journal of The Institute of Image Information and Television Engineers 65, n.º 7 (2011): 950–53. http://dx.doi.org/10.3169/itej.65.950.

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26

Dirani, Mariana, Chadi Tarhini y Tijani Chahed. "Cross-layer modeling of capacity in wireless networks: Application to UMTS/HSDPA, IEEE802.11 WLAN and IEEE802.16 WiMAX". Computer Communications 30, n.º 17 (noviembre de 2007): 3384–91. http://dx.doi.org/10.1016/j.comcom.2007.06.011.

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27

Trimintzios, Panagiotis y George Georgiou. "WiFi and WiMAX Secure Deployments". Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–28. http://dx.doi.org/10.1155/2010/423281.

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Wireless Broadband offers incredibly fast, “always on” Internet similar to ADSL and sets the user free from the fixed access areas. In order to achieve these features standardisation was achieved for Wireless LAN (WLANs) and Wireless Metropolitan Area Networks (WMANs) with the advent of IEEE802.11 and IEEE802.16 family of standards, respectively. One serious concern in the rapidly developing wireless networking market has been the security of the deployments since the information is delivered freely in the air and therefore privacy and integrity of the transmitted information, along with the user-authentication procedures, become a very important issue. In this article, we present the security characteristics for the WiFi and the WiMAX networks. We thoroughly present the security mechanisms along with a threat analysis for both IEEE 802.11 and the 802.16 as well as their amendments. We summarise in a comparative manner the security characteristics and the possible residual threats for both standards. Finally focus on the necessary actions and configurations that are needed in order to deploy WiFi and WiMAX with increased levels of security and privacy.

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28

Gupta, Ankush, Hem Dutt Joshi y Rajesh Khanna. "An X-shaped fractal antenna with DGS for multiband applications". International Journal of Microwave and Wireless Technologies 9, n.º 5 (9 de septiembre de 2016): 1075–83. http://dx.doi.org/10.1017/s1759078716000994.

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In this paper, an X-shaped fractal antenna with defected ground structure (DGS) is presented for multiband and wideband applications. The X shape is used due to its simple design and DGS is utilized to achieve size reduction with multiband and wideband features in the frequency range of 1–7 GHz. The proposed structure is fabricated on FR4 substrate with 1.6 mm thickness. We have proposed two different antennas both are having X-shaped fractal patch with a slotted ground plane to have more impedance bandwidth and better return loss. Various parameters like scale factor, width of ground plane, number of slots with their dimensions and feed line length are optimized to have size reduction and for enhancing the performance of antenna. Reflection coefficient shows the multiband and wideband features of proposed antenna. One of the proposed antennas covers various applications like IEEE802.11y at 3.65 and 4.9 GHz, IEEE 802.11a at 5.4 GHz, 802.11P at 5.9 GHz. Other antenna covers applications like IEEE802.16 at 3.5 GHz; 5 cm band for amateur radio and satellite and future 5 G communication systems over 6 GHz. The antenna designing was done using CST software and simulation results were compared with experimental results (using E5071C network analyzer).

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29

Ferrari, P., A. Flammini, D. Marioli y A. Taroni. "IEEE802.11 Sensor Networking". IEEE Transactions on Instrumentation and Measurement 55, n.º 2 (abril de 2006): 615–19. http://dx.doi.org/10.1109/tim.2006.870105.

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30

Mao, Yong Ming, Dong Wei Zhang y Feng Long Kan. "Simulation Research on MAC Layer Protocol Base on OPNET Modeler". Advanced Materials Research 945-949 (junio de 2014): 2349–52. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2349.

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Modeling and simulation of MAC layer protocols for wireless sensor networks was realized, including WOO-MAC, IEEE802.11 and S-MAC base on OPNET Modeler. On three aspects performance of the average end-to-end information delay, the end-to-end throughput and the average energy consumption, the simulation results were analyzed and research. And the results base on WOO-MAC protocol showed better performance than IEEE802.11 and S-MAC.

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31

Xu, Xin Yue, Xue Mei Ye, Yun Jie Zhu, Yu Jia Dai, Xue Song Li y Zheng Zheng Gong. "Research on Wireless Network Traffic Modeling Based on Channel State". Applied Mechanics and Materials 599-601 (agosto de 2014): 1679–82. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.1679.

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The IEEE802.11 protocol proposed the CSMA/CA mechanism [1] which is more adjustable to the application of the wireless channel based on CSMA. This article will analyze the property of the traffic in the multi-hop wireless network, give the definitions and the migration relationship of four channel states, provide a model for the traffic of the nodes and describe the relationship among the part of the parameters based on the IEEE802.11 protocol.

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32

Dokshin, A. D., M. M. Kovtsur, S. V. Prudnikov y A. I. Targonskaya. "RESEARCH OF APPROACHES FOR AUTHENTICATION OF WIRELESS NETWORK USERS USING VARIOUS LDAP SOLUTIONS". H&ES Research 13, n.º 3 (2021): 28–35. http://dx.doi.org/10.36724/2409-5419-2021-13-3-28-35.

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Intoduction: every year, the technology of the IEEE802.11 family of networks is becoming more widespread and popular. Based on the possible risks, IT administrators take measures to protect their organizations. One of the ways to improve information security is to use IEEE802.1 x for user authorization. Purpose: the purpose of the study is to study various LDAP solutions for user authorization in a wireless network. Results: three variants of the centralized solution for authorization of users of a wireless network on the basis of operating systems are developed: Windows Server, Ubuntu Linux, and Astra Linux. When working with Windows Server, it was found that you can use the Active Directory LDAP database to store user credentials. The study also showed that if the network infrastructure of the organization needs to implement a server using the Linux operating system, then the FreeIPA database can be used as an LDAP database, and the role of the RADIUS server must be entrusted to the FreeRADIUS software. The advantage of this approach is that all the software required for user authorization is free. Despite the fact that Active Directory is the most popular LDAP database-FreeIPA meets all the needs that arise during security administration. Practical relevance: each solution has passed load testing and can be implemented in the network infrastructure of organizations. Discussion: the choice of operating system and LDAP database for user authorization completely depends on the requirements of the organization, so one of the proposed implementation options will fit each requirement.

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33

Hamamoto, Ryo, Kazuomi Endo, Tomohiro Nakagawa, Hiroshi Togo, Junya Tanaka, Kouji Kanazawa, Kentaro Ishihara, Yuchi Kawagoe y Takahito Aso. "Characterization of IEEE802.11 WLAN Implementing on Excavator: Can We Use IEEE802.11 for i-construction?" EAI Endorsed Transactions on Internet of Things 7, n.º 26 (22 de febrero de 2022): 172996. http://dx.doi.org/10.4108/eai.25-1-2022.172996.

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34

Maqhat, Bakeel, Mohd Dani Baba, Ruhani Ab Rahman y Anwar Saif. "Scheduler Algorithm for IEEE802.11n Wireless LANs". International Journal of Future Computer and Communication 3, n.º 4 (2014): 222–26. http://dx.doi.org/10.7763/ijfcc.2014.v3.300.

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35

Sivanantham, S. "Partial Reconfigurable Implementation of IEEE802.11g OFDM". Indian Journal of Science and Technology 7, is4 (22 de junio de 2014): 63–70. http://dx.doi.org/10.17485/ijst/2014/v7sp4.3.

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36

Sivanantham, S. "Partial Reconfigurable Implementation of IEEE802.11g OFDM". Indian Journal of Science and Technology 9, n.º 1 (20 de enero de 2016): 1–6. http://dx.doi.org/10.17485/ijst/2015/v8i36/90317.

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37

Kalis, A. y T. Antonakopoulos. "Direction finding in IEEE802.11 wireless networks". IEEE Transactions on Instrumentation and Measurement 51, n.º 5 (octubre de 2002): 940–48. http://dx.doi.org/10.1109/tim.2002.807806.

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38

Lee, Myungsub y Changhyeon Park. "An Analysis of the Radio Interference in Wireless Vehicular Networks based on IEEE802.11b(WLAN)". Journal of the Institute of Webcasting, Internet and Telecommunication 12, n.º 6 (31 de diciembre de 2012): 117–25. http://dx.doi.org/10.7236/jiwit.2012.12.6.117.

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39

Aboud kadhim, Mohammed y Widad Ismail. "Implementation of WiMAX (IEEE802.16.d) OFDM Baseband Transceiver-Based Multiwavelet OFDM on a Multi-Core Software-Defined Radio Platform". ISRN Signal Processing 2011 (14 de abril de 2011): 1–9. http://dx.doi.org/10.5402/2011/750878.

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This paper investigates a new approach to the adaptation of the WiMAX IEEE802.16d baseband, the physical layer performance of wireless communications systems based on OFDM multiwavelet transform, using half values of coding rates, 16-QAM, and DMWT-OFDM by being applied to the SFF SDR development platform. In the new structure of WiMAX IEEE802.16d baseband, is reduce further the level of interference, and spectral efficiency is increased. The proposed design was model tested, and its performance was found to comply with International Telecommunications Union channel (ITU) models that have been elected for the wireless channel in the simulation process. The simulation approved the proposed design which achieved much lower bit error rates, increased signal-to-noise power ratio (SNR), robustness for multipath channels and does not require cyclically prefixed guard interval and have higher spectral efficiency than OFDM based on DWT and FFT also can be used as an alternative conventional OFDM in WiMAX IEEE802.16d baseband.

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40

K, Krishna Naik y M. N. Giri Prasad. "IAPP for IEEE802.11 WLAN with Improved Range". i-manager's Journal on Software Engineering 1, n.º 4 (15 de junio de 2007): 31–38. http://dx.doi.org/10.26634/jse.1.4.740.

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41

Jama, Abdirisaq M., Othman O. khalifa y Diaa Eldein Mustafa Ahmed. "Video Transmission over an Enhancement Approach Of IEEE802.11e". International Journal of Computer Applications Technology and Research 4, n.º 5 (2 de mayo de 2015): 344–50. http://dx.doi.org/10.7753/ijcatr0405.1003.

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42

MITSUYAMA, Y. "Architecture of IEEE802.11i Cipher Algorithms for Embedded Systems". IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E88-A, n.º 4 (1 de abril de 2005): 899–906. http://dx.doi.org/10.1093/ietfec/e88-a.4.899.

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43

Heo, Ung, Yu-Yang Peng, Kang-Soo You y Jae-Ho Choi. "Energy Efficient Access Point Selection Method for IEEE802.11 Wireless LANs". Journal of the Korea Contents Association 11, n.º 12 (28 de diciembre de 2011): 578–85. http://dx.doi.org/10.5392/jkca.2011.11.12.578.

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44

Chen, Chang Wen y Feng Zhengyong. "Video over IEEE802.11 wireless LAN: A brief survey". China Communications 10, n.º 5 (mayo de 2013): 1–19. http://dx.doi.org/10.1109/cc.2013.6520934.

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45

Feng, Wei. "On a spectral analysis of IEEE802.11 queueing networks". Wireless Networks 22, n.º 1 (14 de mayo de 2015): 159–73. http://dx.doi.org/10.1007/s11276-015-0956-6.

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46

Park, Hyung-Kun. "Distributed Proportional Fair Scheduling for IEEE802.11 Wireless LANs". Wireless Personal Communications 54, n.º 4 (17 de julio de 2009): 719–27. http://dx.doi.org/10.1007/s11277-009-9777-1.

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47

Daqing Gu y Jinyun Zhang. "QoS enhancement in IEEE802.11 wireless local area networks". IEEE Communications Magazine 41, n.º 6 (junio de 2003): 120–24. http://dx.doi.org/10.1109/mcom.2003.1204758.

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48

Ohshima, Kohta, Etsuro Shimizu, Taiga Sakai, Masakazu Abe, Katsuhiko Umeno, Masashi Takemoto, Hiroshi Ezoe y Yusuke Asai. "Attempts to Promote IEEE802.11ah in Japan". Marine Engineering 55, n.º 2 (1 de marzo de 2020): 205–10. http://dx.doi.org/10.5988/jime.55.205.

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49

Chen, Zhe, Debin Hou, Jixin Chen y Pinpin Yan. "A Low Phase Noise Dual-Loop Dual-Output Frequency Synthesizer in SiGe BiCMOS". Electronics 11, n.º 12 (9 de junio de 2022): 1828. http://dx.doi.org/10.3390/electronics11121828.

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In this article, a dual-loop dual-output frequency synthesizer designed for IEEE802.11aj (45 GHz) standard is presented. In order to support the super-heterodyne transceiver, the Loop1 output frequency is fixed for easy design of high-performance IF transceiver and filter, and the Loop2 output frequency varies for the channel selection according to the IEEE802.11aj (45 GHz) standard. The power hungry high-speed prescaler (or multi-modulus-divider) is replaced with a mixer in Loop2, thus the in-band phase noise and DC power consumption can be improved. The dual-loop dual-output synthesizer is fabricated in 0.13 µm SiGe BiCMOS technology, occupies an area of 2.7 mm × 2.4 mm, and consumes 610 mW DC power. Measured results show the phase noise of the frequency synthesizer are −79.3 dBc/Hz@10 kHz and −129.1 dBc/Hz@10 MHz at 12.96 GHz for Output1 and −76.6 dBc/Hz@10 kHz and −117.2 dBc/Hz@10 MHz at 32.535 GHz for Output2. The low-reference spur of −69.2 dBc and low-power level spurious tones at the outputs are observed during the measurement. To the best of our knowledge, this work is the first reported dual-loop dual-output synthesizer designed for IEEE802.11aj (45 GHz) standard.

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50

P, Senthil, Sta nly, Suganya M y Inakshi S S. "New sushisen methods IEEE802.1 Analysis". International Journal of Recent Engineering Science 7, n.º 1 (25 de febrero de 2020): 17–20. http://dx.doi.org/10.14445/23497157/ijres-v7i1p104.

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