Results 211 to 220 of about 6,742 (251)
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Digital Coherent Technology for Optical Fiber and Radio-Over-fiber Transmission Systems
Journal of Lightwave Technology, 2014Current status and the future perspective of digital coherent technology for optical fiber and radio-over-fiber (RoF) transmission systems will be reviewed. For the starter, we will review two key digital coherent techniques; the coherent receiver and compensation techniques for the fiber nonlinearity-induced impairments.
Akihiro Maruta
exaly +2 more sources
An All-photonic Digital Radio over Fiber architecture
2011 IEEE Swedish Communication Technologies Workshop (Swe-CTW), 2011Radio over Fiber (RoF) technology uses optical fiber links to distribute RF signals from a central station to multiple remote access units due to its ability to provide simple antenna front ends, increased capacity, and multi radio wireless access coverage.
R Nilavalan, H S Al-Raweshidy
exaly +3 more sources
FPGA-Based adaptive digital predistortion for radio-over-fiber links
Microprocessors and Microsystems, 2006Abstract Even though the application of radio-over-fiber links is widely used in wireless communication, nonlinear distortion limits their dynamic range. In this paper, a hardware implementation of an adaptive digital predistortion system for ROF links is described.
Reza Sedaghat
exaly +2 more sources
Optimized digital radio over fiber system for medium range communication
Optics Communications, 2019Abstract In recent years, the demand of efficient and broadband wireless access has escalated, for which Radio over Fiber (RoF) is considered as an appropriate solution. In this paper, we present a Digitized Transmission of 20 MHz LTE signal having 64 quadrature amplitude modulation over 70 Km of Standard Single Mode Fiber (SSMF) for broadband ...
Muhammad Usman Hadi +2 more
exaly +2 more sources
Investigation of broadband digital predistortion for broadband radio over fiber transmission systems
Optics Communications, 2016Abstract In future broadband cloud radio access networks (C-RAN), front-haul transmission systems play a significant role in performance and cost of C-RAN. Broadband and high linearity radio over fiber (RoF) transmission systems are considered a promising solution for the front-haul.
Taijun Liu, Dongya Shen
exaly +2 more sources
All-digital Outphasing Modulator for Radio-over-Fiber System
2020 50th European Microwave Conference (EuMC), 2021An all-digital outphasing modulator for radio-over-fiber (RoF) system is presented. In this system, a pair of rectangular outphasing signals are generated in an all-digital outphasing modulator as 1-bit streaming data and transmitted to an optical fiber. In measurement results, signal to noise ratio (SNR) of 30 dB is achieved for 100 MHz bandwidth OFDM
Yuma Kase +3 more
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High Performance Fiber-Radio Link: Digitized Radio-over-Fiber
Asia Communications and Photonics Conference, 2012In this paper, we review our recent work on digitized RF transport to improve the dynamic range and performance of fiber-radio link which is traditionally based on analog signal transport.
Christina Lim +2 more
openaire +1 more source
An experimental study on digital predistortion for radio-over-fiber links
Asia Communications and Photonics Conference and Exhibition, 2010Digital predistortion for directly modulated RoF links is experimentally investigated. A memory-polynomial-based predistorter model is directly identified from measurements of the baseband OFDM input-output signals and using the least-squares method in Matlab. The RoF link nonlinearity has been reduced implementing this technique.
Luis C. Vieira +2 more
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Radio over Fiber for Implementing Digital Television Network in Indonesia
2020 International Seminar on Intelligent Technology and Its Applications (ISITIA), 2020Indonesia launched a program to transition from analog to digital television (DTV) systems to improve the efficiency and quality of signals; however, the infrastructure available to support this was challenged by the country's unique topography and population distribution.
Dian Rusdiyanto, Catur Apriono
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