Analysis and Performance Evaluation of IEEE 802.11 WLAN

With fast deployment of wireless local area networks VoIP over IEEE 802.11 wireless local area network (WLAN) is growing very fast and is providing a cost effective alternative for voice communications. WLANs were initially set up to handle bursty nonreal time type of data traffic. Therefore, the wireless access protocols initially defined are not suitable for voice traffic. Subsequently, updates in the standard have been made to provision for QoS requirements of data, especially the real time traffic of the type voice and video. Despite these updates, however, transmitting voice traffic over WLAN does not utilize the available bandwidth (BW) efficiently, and the number of simultaneous calls supported in practice is significantly lower than what the BW figures would suggest. Several modifications have been proposed to improve the call capacity, and recently isochronous coordination function (ICF) was introduced to mitigate the problem of low call capacity. The proposed modified ICF which further improves the performance in terms of the call capacity. The proposed scheme uses multiplexing and multicasting in the downlink to substantially increase the call capacity

MIMO antenna for Fifth Generation mm-Wave Applications: A Bibliometric Survey

Nowadays most discussed technology is mm-wave and 5G communication. The requirement of 5G technology is high bandwidth, high data rate, and low latency. To fulfil these requirements for the current growth in mobile communication multiple input multiple output antenna is used. This bibliometric paper throws light on the various methods used to improve mutual coupling between multiple antennas. Various mutual coupling reduction techniques that are used in MIMO antennas like Dielectric resonator antenna, Electromagnetic Bandgap Structure, Neutralization lines, Defected Ground Structures, Metamaterial, etc. are explained. Scopus database is used for this bibliometric review on mm-wave MIMO 5G technology from the year 2016 to 20th December 2020. This paper elaborates, a bibliometric survey of MIMO antennas used in 5G technology for an mm-wave frequency range

SECURE COMMUNICATION SYSTEM

The principal objective of this project is to develop a medium range stand-alone (ad-hoc) portable wireless communication system. The availability of portable wireless communication system will enable devices such as personal computers, smart phones to communicate with each other without the need for sophisticated base stations like mobile towers. Various people like travellers, military, students, corporate, etc. will make wide use of this system for communicating among themselves and others. Our project overcomes all the above drawbacks being portable, stand-alone, fast and end-to-end secure (encrypted). It uses cutting-edge Advanced Encryption Standard for securing the data being exchanged

A Bibliometric Survey on Ultra Wideband Multiple Input Multiple Output Antenna with Improved Isolation

Ultra wideband (UWB) technology remains a viable choice for very high speed data communication in future applications involving large bandwidth. For boosting the data communication efficiency and to mitigate the multipath fading issue faced by UWB system with existing narrowband systems, Multiple Input Multiple Output (MIMO) antenna system is used along with UWB. Mutual coupling which must be smaller in value plays a vital role in deciding the efficiency of MIMO antenna and hence it becomes as important aspect. The mutual coupling reduction techniques of various UWB MIMO antennas are surveyed in this bibliometric paper. The bibliometric survey aims to enlighten different types of mutual coupling reduction technique employed in various MIMO antenna like Neutralization lines, Electromagnetic Bandgap Structure, Defected Ground Structures, etc. that support UWB applications. The Scopus database from January 2015 to 16thDecember 2020 is used to perform this bibliometric survey on UWB MIMO antennas

Metamaterials in 5G Antenna Designs: A Bibliometric Survey

The demand of high gain and wideband compact antenna designs are gaining importance to fulfil the need of 5G communication systems. This has opened the doors for the researchers to explore 5G antennas incorporating metamaterials as they can meet the requirement of high gain and wideband compact antennas. Overview of various metamaterial-based antenna designs including Electromagnetic Band Gap (EBG), artificial Magnetic Conductor (AMC), Frequency Selective Surface (FSS) and Partially Reflective Surface (PRS) are discussed in the paper. The paper primarily focuses on bibliometric survey of various types of 5G metamaterial antennas in terms of number of documents published, leading universities actively involved in the related research, distribution of documents in different areas, major contribution of authors and leading journal publishing the documents. Scopus database from 1st September 2014 till date is used to carry out this bibliometric survey. The statistical data presented in this paper can provide the prerequisite for the researchers to work in this area

Fifth Generation Antennas: A Bibliometric Survey and Future Research Directions

As the 5G technology is going to be deployed soon, so the research on the 5G antennas as a part of communication devices becomes an important aspect. One of the important components of the 5G communication system is an antenna that is essential for the transmission and reception of the 5G signals. The international telecommunication union (ITU) has provided different specifications for the 5G communication system. The 5G antenna should operate at frequency range 1 and 2 (FR1 and FR2) specified by the ITU. The proliferation of various 5G antenna designs is surveyed in this bibliometric paper. The bibliometric survey aims to throw light on several types of antenna employed in various 5G applications like smartphone, base stations, and the IoT based devices that support 5G communications. The Scopus database from January 2015 to 14th October 2020 is used to perform this bibliometric survey on 5G antennas. This paper also presents various future breakthroughs in 5G applications