Radio over Fiber for Broadband Communications

2009 ◽  
pp. 80-103 ◽  
Author(s):  
Sotiris Karabetsos ◽  
Spiros Mikroulis ◽  
Athanase Nassiopoulos
Keyword(s):  
Optical Fiber ◽  
Communication Networks ◽  
High Capacity ◽  
Radio Over Fiber ◽  
Literature Survey ◽  
Wireless Access ◽  
Next Generation ◽  
Efficient Approach ◽  
Fiber Technology ◽  
Broadband Communications

The high capacity offered by the optical fiber, combined with the mobility and the flexibility of wireless access, either fixed or not, provides an efficient approach to alleviating the requirements posed by the envisaged provision of any-service, anytime and anywhere, next generation communication networks. The objective of this chapter is to present an overview of Radio-over-Fiber technology, as an emerging infrastructure for next generation, fiber-based, wireless access broadband networking. In particular, the fundamental concept of Radio-over-Fiber technology is reviewed and the partial components comprising it are discussed. Furthermore, the associated architectures are depicted and a short literature survey of trends and applications is considered.

scholarly journals Transmission (2Gbps) over optical fiber cable by using radio over fiber and wavelength division multiplexing techniques

2019 ◽  
Vol 24 (5) ◽  
pp. 115
Author(s):  
Humam Husseinˡ ◽  
Dogu Cagdas Atilla1 ◽  
Essa Essa2 ◽  
Cagatay Aydin1
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Performance Test ◽  
Optical Signal ◽  
Radio Over Fiber ◽  
Total Power ◽  
Q Factor ◽  
Wavelength Division ◽  
Fiber Technology ◽  
Optical Fiber Cable

In recent years, there has been a growing and continuous demand for great (data rates) beyond existing wired and wireless networks. Radio-over-Fiber technology is considered as an efficient and practical solution for providing broadband wireless. In this paper, many techniques are used to implement a system that has the capability to provide a great bit rate, broadband bandwidth, and minimum cost. So Radio-over-Fiber technology was used to modulate the light with radio-signal and transmission the signals through an optical fiber cable. Wavelength-Division-Multiplexing technique was used to send many signals through the same link, and Subcarrier Multiplexing-Amplitude Shift keying as a modulation format. 2Gpbs separate on two channels was transmitted on Single-Mode Fiber. The average results obtained from our experience was as follows: maximum Q factor average = 4.9712925, minimum BER average = 3.63*10-7, total power average (dBm) = -51.1502, the OSNR average (dB) = 52.085 for channel_1. The results of channel_2 were: maximum Q factor average = 5.5901325, minimum BER average = 1.26*10-8, total power average (dBm) = -46.60135, the average of optical signal-to-noise ratio (dB) = 54.65. All the average result that has from our simulation was very good and acceptable. The simulation and performance test of our experience was done using Optisystem 7.0.   http://dx.doi.org/10.25130/tjps.24.2019.100

40 Gbps Laguerre-Gaussian and Hermite-Gaussian Optical Mode Division Multiplexing for Radio over Fiber System

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Hussein Ahmed Mahmood
Keyword(s):  
High Capacity ◽  
Radio Over Fiber ◽  
Laser Source ◽  
Q Factor ◽  
Fiber System ◽  
Eye Diagram ◽  
Optical Propagation ◽  
Mode Division Multiplexing ◽  
Fiber Technology ◽  
Radio Over Fiber System

AbstractRadio over Fiber technology is utilizing the high capacity of optical fiber system and wireless mobility network. In this work, we proposed two different optical propagation modes namely Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) setting to (0.1), (0.2) mode types generated by a special CW laser source at varying wavelength from 800 nm to 1150 nm with 50 nm spacing channel Mode division Multiplexing (MDM) technique. These wavelengths transmitted×5Gb/s data modulated on PSK modulator having 100 GHz radio frequency subcarrier over 5 km Parabolic-Index Multimode Fiber link. Q factor value and eye diagram used to evaluate system performance which showed the maximum Q factor value found at 800 nm channel 1 equal to 12.0113 for both LG 0 1 and HG 0.1. While the maximum Q factor appears at 800 nm channel 1 equal to 8.49756 for LG 0,2 and 3.56785 at 1000 nm channel 5 for HG 0.2.

scholarly journals A Novel WLAN Vehicle-To-Anything (V2X) Channel Access Scheme for IEEE 802.11p-Based Next-Generation Connected Car Networks

2018 ◽  
Vol 8 (11) ◽  
pp. 2112 ◽  
Author(s):  
Jinsoo Ahn ◽  
Young Kim ◽  
Ronny Kim
Keyword(s):  
Communication Networks ◽  
Communication Systems ◽  
High Capacity ◽  
Ieee 802.11P ◽  
Transport Systems ◽  
Channel Access ◽  
Next Generation ◽  
Backward Compatibility ◽  
Access Scheme ◽  
The Future

To support a massive number of connected cars, a novel channel access scheme for next-generation vehicle-to-anything (V2X) systems is proposed in this paper. In the design of the proposed scheme, two essential aspects are carefully considered: backward compatibility and massive V2X support. Since IEEE 802.11p-based V2X networks are already being deployed and used for intelligent transport systems, next-generation V2X shall be designed considering IEEE 802.11p-based V2X networks to provide backward compatibility. Since all future cars are expected to be equipped with a V2X communication device, a dense V2X communication scenario will be common and massive V2X communication support will be required. In the proposed scheme, IEEE 802.11-based extension is employed to provide backward compatibility and the emerging IEEE 802.11ax standard-based orthogonal frequency-division multiple access is adopted and extended to provide massive V2X support. The proposed scheme is further extended with a dedicated V2X channel and a scheduled V2X channel access to ensure high capacity and low latency to meet the requirements of the future V2X communication systems. To demonstrate the performance of the proposed scheme thoroughly and rigorously, the proposed scheme is mathematically analyzed using a Markov model and extensive simulations are performed. In the dense V2X communication networks of the future, the proposed V2X communication scheme will provide high performance and reliability.

Full duplex dispersion compensating system based on chromatic dispersion in analog RoF links

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Deyitha Dileep ◽  
Supriya S. Sindhu ◽  
Joseph Zacharias
Keyword(s):  
Communication Networks ◽  
Signal Transmission ◽  
Chromatic Dispersion ◽  
Base Station ◽  
Radio Over Fiber ◽  
Full Duplex ◽  
Downlink Transmission ◽  
Distortion Compensation ◽  
Fiber Technology ◽  
Signal Distortions

AbstractRadio over Fiber technology is a promising solution for next-generation wireless communication networks. In radio over fiber systems, signal distortions caused by modulator nonlinearity is a major concern. In this paper, a full duplex dispersion compensating system using chromatic dispersion is proposed. A system using 16 QAM OFDM signal transmission is presented. Distortion compensation is observed when a required amount of dispersion is added. Bit Error Rate (BER) and constellation diagrams for different amount of dispersion are analyzed and its comparison is presented. Since the framework utilizes just a single persistent wave laser for upstream and downstream transmission the base station is additionally disentangled and it diminishes the general framework cost. Signal distortions are reduced when the dispersion is adjusted to 640 ps/nm for uplink transmission and 760 ps/nm for downlink transmission.

scholarly journals High-Speed Wireless Access in Forested Rural Areas Using Analog Radio-over-Fiber Technology

2018 ◽  
Author(s):  
Dimitrios Konstantinou ◽  
Alvaro Morales ◽  
Imane Aghmari ◽  
Simon Rommel ◽  
Thiago R. Raddo ◽  
...  
Keyword(s):  
Rural Areas ◽  
High Speed ◽  
Radio Over Fiber ◽  
Wireless Access ◽  
Fiber Technology
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