• Publications
  • Influence
RoF-Based Mobile Fronthaul Networks Implemented by Using DML and EML for 5G Wireless Communication Systems
TLDR
We investigate the feasibility of implementing a mobile fronthaul network (MFN) based on the radio-over-fiber (RoF) technology for fifth generation wireless communication systems cost effectively by using either directly modulated lasers (DMLs) or electroabsorption modulated laser (EMLs) operating in the 1.55-μm window. Expand
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DSP-based CSO cancellation technique for RoF transmission system implemented by using directly modulated laser.
TLDR
We propose and demonstrate a simple composite second-order (CSO) cancellation technique based on the digital signal processing (DSP) for the radio-over-fiber (RoF) transmission system implemented by using directly modulated lasers (DMLs). Expand
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Optical fronthaul technologies for next-generation mobile communications
TLDR
We report on technical challenges associated with the use of directly modulated lasers in the mobile fronthaul networks based on radio-over-fiber (RoF) technology. Expand
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Reflection-Tolerant RoF-Based Mobile Fronthaul Network for 5G Wireless Systems
TLDR
We propose to utilize the filtered Gaussian phase dither technique for the effective suppression of the multipath- interference (MPI) noises caused by multiple bad fiber connectors in the mobile fronthaul network (MFN) based on the radio-over- fiber (RoF) technology. Expand
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Carrier-phase-estimation algorithm featuring fast trackability for high-speed coherent WDM PON based on RSOA.
There have been substantial efforts to implement high-speed (>10 Gb/s) upstream transmission using reflective semiconductor optical amplifiers (RSOAs) in a coherent wavelength-division-multiplexedExpand
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Adaptive Blind CSO Cancellation Technique for RoF Systems Implemented by Using DMLs
TLDR
We report on the adaptive cancellation technique of the dispersion-induced composite second-order (CSO) distortions for use in radio-over-fiber systems implemented by using directly modulated lasers (DMLs). Expand
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294-Gb/s CPRI-Equivalent-Rate Radio-over-Fiber Mobile Fronthaul Network Using a 1.55-µm DML and Dispersion-Induced CSO Cancellation
TLDR
We demonstrate the transmission of twelve 360-MHz filtered-OFDM signals in 64-QAM format over 20 km of SSMF by using a 1.55-µm directly modulated laser and a DSP-based composite second-order cancellation technique. Expand
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MPI Noise Reduction in RoF-Based Mobile Fronthaul Network Using High-Frequency Phase Dither
TLDR
We demonstrate the mitigation of MPI noises in the RoF-based mobile fronthaul network by using high-frequency phase dither. Expand
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Correlation between Improvement of Subjective Nasal Patency and Changes of Parameters Measured by Acoustic Rhinometry after Septoplasty and Outfracturing of Both Turbinates
Received October 28, 2010 Revised January 11, 2011 Accepted January 8, 2011 Address for correspondence Young-Jun Chung, MD Department of OtorhinolaryngologyHead & Neck Surgery, Dankook UniversityExpand
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Blind Compensation of Nonlinear Waveform Distortions in Radio-over-Fiber System
TLDR
We propose a DSP-based nonlinearity compensation technique for RoF links which does not require any prior knowledge about the links and successfully transport twelve 198-MHz-bandwidth 64-QAM f-OFDM signals over 20 km of SSMF. Expand
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