scholarly journals Performance evaluation of flexible cross correlation (FCC) OCDMA code based on radio over fiber (RoF) simulation system

2019 ◽  
Vol 13 (2) ◽  
pp. 543
Author(s):  
Z. Ibrahim ◽  
C.B.M. Rashidi ◽  
S.A. Aljunaid ◽  
A.K. Rahman ◽  
M.S. Anuar
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Cross Correlation ◽  
Local Area Network ◽  
Multiple Access Interference ◽  
Local Area ◽  
Simulation System ◽  
Area Network ◽  
Bit Rate ◽  
Code Construction

<span>This paper investigates the performance of an elegance code set algorithm known as Flexible Cross Correlation (FCC) code to be run into a simulation test of proposed RoF system. Executing OCDMA Code into RoF framework is seen as a promising technique for enhancing spectral efficiency and meanwhile enhanced the length of fiber optic cable and data bit rate execution while reduce the passive equipment device. This code can efficaciously reduce the results of phase-induced intensity noise (PIIN), it has the multiple access interference (MAI) cancellation belongs to RoF system and at the same time simple and easy within the code construction. Bit error rate (BER) performance is assessed for this proposed simulation system. The evaluation made based on the performance of fiber length, data bit rate, related with Bit Error Rate (BER) and also the complexity of the system. The extensive simulation results reveal FCC code possibly will accomplish sufficiently up to 51 km at BER 10-9 for data rate 155 Mbps as matched to 622 Mbps with exponentially increases at BER 10-12 error floor and it is fit for short haul networking such as FTTH and local area network (LAN).</span>

scholarly journals Performance Evaluation of 5G/WiFi-6 Coexistence

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Blocking Probability ◽  
New Technology ◽  
Local Area ◽  
Area Network ◽  
Health Production ◽  
Bit Rate ◽  
Simulation Language ◽  
Industrial Sectors

The fifth-generation mobile communication network (5G) is the promising technology nowadays to provide not only a higher speed compared to 4G but also a revolution of services to cover different industrial sectors such as health, production, energy, and many. WiFi-6 is a new wireless local area network (WLAN) technology that is suitable to work in an office, home, and dense areas. As a new technology, 5G has some limitations concerning coverage and capacity. To overcome these limitations, one possible solution is to use the free unlicensed spectrum available in Wi-Fi technology, therefore, a complement solution of 5G/WiFi-6 coexistence is proposed to make both technologies complement each other in providing a better quality of service for the end-user concerning a higher speed, low latency, and higher capacity. According to OFDM modulation, the proposed model divides the cell into two virtual zones, the inner zone represents WiFi-6 technology surrounded by 5G technology. All resources will be shared between the two technologies taken into consideration that more bandwidth should be given to the most inner zone with high intensity of traffic. The call admission control algorithm will be based on a minimum bit rate to be given to each zone that should be satisfied to admit the call. The model is solved using MOSEL-2 simulation language, to study different performance parameters such as BER, utilization, blocking probability, latency, throughput, and aggregate average bit rate in both zones. The simulation results show that coexistence causes some degradation in 5G performance, however, a positive effect on the overall cell performance is achieved by balancing the load all over the whole cell.

Strathnet—a local area network

1981 ◽  
Vol 1 (1) ◽  
pp. 21 ◽  
Author(s):  
David Hutchison ◽  
Doug Shepherd
Keyword(s):  
Local Area Network ◽  
Local Area ◽  
Area Network

A Local Area Network for Medical Research; Planning, Realization and Experience

1991 ◽  
Vol 30 (01) ◽  
pp. 53-64 ◽  
Author(s):  
R. Schosser ◽  
C. Weiss ◽  
K. Messmer
Keyword(s):  
Medical Research ◽  
Word Processing ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Test Installation ◽  
Cost Performance ◽  
The Public ◽  
On Line ◽  
The University

This report focusses on the planning and realization of an interdisciplinary local area network (LAN) for medical research at the University of Heidelberg. After a detailed requirements analysis, several networks were evaluated by means of a test installation, and a cost-performance analysis was carried out. At present, the LAN connects 45 (IBM-compatible) PCs, several heterogeneous mainframes (IBM, DEC and Siemens) and provides access to the public X.25 network and to wide-area networks for research (EARN, BITNET). The network supports application software that is frequently needed in medical research (word processing, statistics, graphics, literature databases and services, etc.). Compliance with existing “official” (e.g., IEEE 802.3) and “de facto” standards (e.g., PostScript) was considered to be extremely important for the selection of both hardware and software. Customized programs were developed to improve access control, user interface and on-line help. Wide acceptance of the LAN was achieved through extensive education and maintenance facilities, e.g., teaching courses, customized manuals and a hotline service. Since requirements of clinical routine differ substantially from medical research needs, two separate networks (with a gateway in between) are proposed as a solution to optimally satisfy the users’ demands.

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

PERANCANGAN ANTENA MIKROSTRIPRECTANGULAR

Jurnal Teknik ◽  
2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Heru Abrianto
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Wireless Lan ◽  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Dual Polarization ◽  
Feeding Technique

Microstrip antenna which designed with dual feeding at 2.4 GHz and 5.8 GHz can meet WLAN (Wireless Local Area Network) application.Antenna fabrication use PCB FR4 double layer with thickness 1.6 mm and dielectric constant value 4.4. The length of patch antenna according to calculation 28.63 mm, but to get needed parameter length of patch should be optimized to 53 mm. After examination, this antenna has VSWR 1.212 at 2.42 GHz and 1.502 at 5.8 GHz, RL -13.94 dB at 2.42 GHz and -20.357 dB at 5.8 GHz, gain of antenna 6.16 dB at 2.42 GHz and 6.91 dB at 5.8 GHz, the radiation pattern is bidirectional. Keywords : microstrip antenna, wireless LAN, dual polarization, single feeding technique

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