scholarly journals Duplexing mode, ARB and modulation approaches parameters affection on LTE uplink waveform

2020 ◽  
Vol 10 (2) ◽  
pp. 1485 ◽  
Author(s):  
Fatima Faydhe Al-Azzawi ◽  
Faeza Abas Abid ◽  
Zainab faydhe Al-azzawi
Keyword(s):  
Mobile Networks ◽  
Access Network ◽  
Next Generation ◽  
Mobile Data ◽  
Wired Networks ◽  
Mobile Access ◽  
Auto Correlation ◽  
Modulation Techniques ◽  
Generation Network ◽  
Lte Uplink

The next generation of radio technologies designed to increase the capacity and speed of mobile networks. LTE is the first technology designed explicitly for the Next Generation Network NGN and is set to become the de-facto NGN mobile access network standard. It takes advantage of the NGN's capabilities to provide an always-on mobile data experience comparable to wired networks. In this paper LTE uplink waveforms displayed with various duplexing mode, Allocated Resources Blocks ARB, Modulation types and total information per frame, QPSK and 16 QAM used as modulation techniques and tested under AWGN and Rayleigh channels, similarity and interference of the generated waveforms tested using auto-correlation and cross-correlation respectively.

scholarly journals A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2014
Author(s):  
M. A. Elmagzoub ◽  
Asadullah Shaikh ◽  
Abdullah Alghamdi ◽  
Khairan Rajab
Keyword(s):  
Wireless Networks ◽  
Optical Networks ◽  
Optical Fibre ◽  
Mobile Networks ◽  
Access Network ◽  
Future Research ◽  
Broadband Networks ◽  
Next Generation ◽  
High Data ◽  
Data Rates

Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

scholarly journals Performance Evaluation of symmetric 8×10 Gbps TWDM-PON incorporating Polarization Division Multiplexed Modulation Techniques under fiber-impairments

2021 ◽  
Author(s):  
Meet Kumari ◽  
Reecha Sharma ◽  
Anu Sheetal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Rural Areas ◽  
Transmission Rate ◽  
Access Network ◽  
High Capacity ◽  
Optical Power ◽  
Passive Optical Network ◽  
Next Generation ◽  
Power Budget ◽  
Modulation Techniques

Abstract Today’s access networks are in high demand to fulfill the high bandwidth requirement because of extensive improvement in high transmission rate applications for cloud computing, big data analytics, and other next-generation 5G smart applications. This exponential growth of high capacity and broadband access technologies comprise an essential trend in the development of a passive optical network (PON) access network. In this paper, 80/80 Gbps time wavelength division multiplexing PON (TWDM-PON) incorporating polarization division multiplexing (PDM) based Mach-Zehnder modulator (MZM) and electroabsorption modulator (EAM) techniques have been proposed. The performance of the system consisting of different polarized multiplexed modulation techniques is investigated in both downstream and upstream data transmission for variable transmission distance and received optical power in terms of bit error rate (BER), eye diagrams, power budget (PB) and receiver sensitivity (RS). The results show that the 4×20/20 Gbps PDM-EAM modulated signals over 100 km fiber distance at -60 dBm RS and 70 dB PB are successfully transmitted under fiber non-linearities. The proposed TWDM-PON system provides a next-generation long-reach access network from urban to rural areas.

Authentication in Next Generation Network

2015 ◽  
pp. 238-264
Author(s):  
G. C. Manna ◽  
Vishnu Suryavanshi
Keyword(s):  
Mobile Networks ◽  
User Authentication ◽  
Single Point ◽  
Session Initiation Protocol ◽  
Next Generation Network ◽  
Next Generation ◽  
Generation Network ◽  
Point Control ◽  
Voice Data

Next generation Network has been evolved based on the concept of integration of voice, data and mobile networks, single point control for provisioning of all services and single account for all services of an user or corporate over an all IP platform. User authentication of next generation network depends on Session Initiation Protocol but existing networks do not directly support this protocol. The new networks authentication policy together with existing networks authentication policy completes the authentication process. Authentication steps for each type of network with trace routes involving associated protocols has been discussed in the chapter.

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