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Comparison of digitized and analog radio-over-fiber systems over WDM-PON networks
2013 International Conference on ICT Convergence (ICTC), 2013As the rapid increase in mobile data traffics, radio-over-fiber(RoF) technology is one of the possible candidates for wireless signal distribution over fiber optic links. With the combination of wavelength division multiplexing (WDM) passive optical network (PON)s RoF technique has raised great interests because it provides a large number of high ...
KyungWoon Lee, Jung Ho Park, HyunDo Jung
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Digital predistortion technique for the compensation of nonlinear effects in radio over fiber links
2016 IEEE 2nd International Forum on Research and Technologies for Society and Industry Leveraging a better tomorrow (RTSI), 2016Due to their inherent capillary distribution properties, Radio over Fiber (RoF) systems are expected to play a major role within future fifth generation wireless networks. However, significant bounds on the technology usability are set by the nonlinear generation of spurious frequencies, which, in the case of RoF links exploiting Directly Modulated ...
Fuochi F. +4 more
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Analog and Digitized Radio-over-Fiber
2017Radio-over-Fiber (RoF) techniques aim to simplify as much as possible the configuration and the cost of the radio terminations of wireless networks. Both wireless LANs (WLAN) and cellular networks can potentially benefit from RoF. In wireless systems, the most costly equipment is the radio oscillators today necessary at each antenna site (called remote
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Digital Coherent W-band MIMO Radio-over-Fiber Systems
Advanced Photonics 2015, 2015We present digital coherent W-band MIMO RoF system and its collected digital signal processing for optical and wireless signal. Its high resilience of dual optical wireless link will find immediate application to disaster recovery.
Ken-ichi Kitayama +3 more
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Digital coherent technology for optical fiber and radio-over-fiber transmission systems
2013 IEEE International Topical Meeting on Microwave Photonics (MWP), 2013The digital coherent technology is a renaissance of coherent optical communication in mid 80s, underpinned by a powerful digital signal processing (DSP) owing to the rapid progress in silicon complementary metal oxide semiconductor (CMOS) LSI technology.
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Digital Coherent W-band MIMO Radio-over-Fiber System
Frontiers in Optics 2015, 2015W-band RoF transmission system with converged MIMO DSP for compensating signal impairments both in optical fiber and free-space is presented, particularly focusing on MDM transmission in a low differential mode group delay two-mode fiber link.
Ken-ichi Kitayama +4 more
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IEEE Transactions on Microwave Theory and Techniques, 2018
We propose a digitally linearized radio-over fiber (RoF) downlink transmitter architecture for cloud radio access networks (C-RANs), and we demonstrate its proof of principle in the near-millimeter wave (mm-wave) range (24 GHz). Amplification of input radio frequency signal power is commonly adopted to minimize the impact of photodetection noise on the
Mahmood Noweir +6 more
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We propose a digitally linearized radio-over fiber (RoF) downlink transmitter architecture for cloud radio access networks (C-RANs), and we demonstrate its proof of principle in the near-millimeter wave (mm-wave) range (24 GHz). Amplification of input radio frequency signal power is commonly adopted to minimize the impact of photodetection noise on the
Mahmood Noweir +6 more
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2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN), 2017
In this paper, we propose the linearization of a Radio-over-Fiber (RoF) system in a real scenario, where the output signals are sent back from the Remote Radio Head (RRH) to the Baseband Unit (BBU) through a feedback loop. Firstly, the feedback chain is considered ideal, so the output signals are captured in the RRH side.
Carlos Mateo 0002 +4 more
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In this paper, we propose the linearization of a Radio-over-Fiber (RoF) system in a real scenario, where the output signals are sent back from the Remote Radio Head (RRH) to the Baseband Unit (BBU) through a feedback loop. Firstly, the feedback chain is considered ideal, so the output signals are captured in the RRH side.
Carlos Mateo 0002 +4 more
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Digitizing radio-over-fiber transceiver based on optical tunable encoder and optical codewords
Photonic Network Communications, 2016Radio over fiber (RoF) is a very attractive and promising technology for wireless access networks, because of several advantages such as providing huge bandwidth, inherent immunity to electromagnetic interference and reduced power consumption. The analog RoF networks cannot be used for the transmission of radio signals over long lengths of fiber due to
Maha Sliti +2 more
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Digitized radio over fiber technology employing hardware implemented NTP technique
Digest of the 9th International Conference on Optical Internet (COIN 2010), 2010We introduce an outline of the digitized radio over fiber (DROF) technology that uses packet-based networks as transmission lines, and hardware-implemented NTP as synchronization technique between master and remote units. The resulting synchronization performance is sufficient for practical applications.
Shigeru Kuwano +2 more
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