Changyo Han
Changyo Han
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映像コンテンツとロボットの連携に向けた非可聴音声への信号埋め込み 手法の検討
Saho Yamaguchi
,
Changyo Han
,
Takeshi Naemura
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Bandwidth Efficient Transmission of 96 LTE-A Signals with 118-Gb/s CPRI-Equivalent Rate using 2-GHz Frequency Span and Intermixing Mitigation for Mobile Fronthaul
We experimentally demonstrate bandwidth efficient transmission of 96-IF carriers LTE-A signals with 118-Gb/s CPRI-equivalent rate using …
Minkyu Sung
,
Changyo Han
,
Seung-Hyun Cho
,
Hwan Seok Chung
,
Sun Me Kim
,
Jong Hyun Lee
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Experimental Investigations of Uplink Transmission Performances in a Mobile Fronthaul based on IFoF Technique
We experimentally investigate an IFoF mobile fronthaul uplink, where 64-QAM mapped and 2 carrier aggregated 20 MHz LTE-A OFDM signals …
Seung-Hyun Cho
,
Changyo Han
,
Minkyu Sung
,
Hwan Seok Chung
,
Sun Me Kim
,
Jong Hyun Lee
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DOI
URL
Impact of Dispersion-Induced Second-Order Distortion in Multi-IFoF-based Mobile Fronthaul Link for C-RAN
We investigate effects of second-order distortion induced by chirp and dispersion in multi-IFoF-based mobile fronthaul links. We …
Changyo Han
,
Minkyu Sung
,
Seung-Hyun Cho
,
Hwan Seok Chung
,
Sun Me Kim
,
Jong Hyun Lee
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DOI
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Linearity Improvement of Directly-Modulated Multi-IF-over-Fibre LTE-A Mobile Fronthaul Link Using Shunt Diode Predistorter
We demonstrate linearity improvement of directly-modulated multi-IF-over-fibre links using a simple shunt diode predistorter. We …
Changyo Han
,
Seung-Hyun Cho
,
Hwan Seok Chung
,
Jong Hyun Lee
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Project
DOI
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3개의 모드를 이용한 모드 분할 다중 및 파장 분할 다중 광전송
본 논문에서는 LP11 모드 선택형 커플러 (mode selective coupler)를 이용하여, LP01 모드와 2개의 중첩된 LP11 모드를 멀티플렉싱할 수 있는 광섬유 (all-fiber) 모드 멀티플렉서를 제시하였다. LP01 …
Sun Hyok Chang
,
Hwan Seok Chung
,
Changyo Han
,
Kwangjoon Kim
,
Jyung Chan Lee
,
Jong Hyun Lee
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6×6 MIMO 신호 처리를 이용한 위상 판 기반 모드 다중화기의 성능 평가
본 논문에서는 6×6 MIMO 기반의 디지털 신호처리를 통하여 위상 판 기반의 3 모드 다중화기를 이용하 여 전송한 모드 다중 신호의 비트오율 특성, 모드 의 존 손실 특성을 평가하였다.
Changyo Han
,
Hwan Seok Chung
,
Sun Hyok Chang
,
Kwangjoon Kim
,
Jong Hyun Lee
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Project
Experimental Demonstrations of Next Generation Cost-Effective Mobile Fronthaul with IFoF technique
We described next generation mobile fronthaul based on IFoF technique and theoretically estimated its system performances. Based on our …
Seung-Hyun Cho
,
Hwan Seok Chung
,
Changyo Han
,
Sangsoo Lee
,
Jong Hyun Lee
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DOI
URL
Nonlinear Compensation based on Predistortion for Radio over Fiber Systems
We investigate a nonlinear compensation technique for Radio over Fiber systems based on the laser’s response at three …
Andres C. Najarro
,
Sung Man Kim
,
Changyo Han
,
Seung-Hyun Cho
,
Hwan Seok Chung
,
Jong Hyun Lee
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Project
Experimental Comparison of the Multi-IF Carrier Generation Methods in IF-over-Fiber System Using LTE Signals
Radio-over-fiber technique utilized by multiple IF carrier transmission scheme is expected to be a cost-effective solution for next …
Changyo Han
,
Seung-Hyun Cho
,
Hwan Seok Chung
,
Sangsoo Lee
,
Jong Hyun Lee
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Project
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