Browsing by Author "Lin, Chun-Ting"

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1.1-Gb/s White-LED-Based Visible Light Communication Employing Carrier-Less Amplitude and Phase Modulation
(2012-10-01)
Wu, Fang-Ming
;
Lin, Chun-Ting
;
Wei, Chia-Chien
;
Chen, Cheng-Wei
;
Huang, Hou-Tzu
We demonstrate 1.1-Gb/s visible light communication (VLC) employing carrier-less amplitude and phase modulation (CAP) and a commercially available phosphorescent white light emitting diode (LED). Optical blue filtering, pre-compensation, and decision feedback equalization are used to compensate the frequency response of the phosphor-based white LED. Various modulation orders of CAP signals are investigated to maximize the capacity of the VLC system. The record data rate of 1.1 Gb/s with the bit error rate performance below the FEC limit of 10(-3) is successfully achieved >23-cm air-transmission via a 220-MBaud 32-CAP signal.
100-GHz DD-OFDM-RoF system over 150-km fiber transmission employing pilot-aided phase noise suppression and bit-loading algorithm
(2014-02-24)
Huang, Hou-Tzu
;
Liang, Wan-Ling
;
Lin, Chun-Ting
;
Wei, Chia-Chien
;
Chi, Sien
This study extended the transmission distance of a 100-GHz DD-OFDM-RoF system through the reduction of chromatic dispersion-induced phase noise. The implementation of a pilot-aided phase noise suppression (PPNS) scheme enabled the transmission of distance-insensitive 16.97-Gbps QPSK OFDM over 0 similar to 150-km fiber and 2-m air transmission via a DFB laser with linewidth of 1 similar to 10-MHz. We applied a bit-loading algorithm in conjunction with PPNS to maximize spectral efficiency, resulting in a 93% improvement in the data rate from 11.53 to 22.27 Gbps at a fiber transmission of 150 km. (C) 2014 Optical Society of America
12.5-Gb/s Wireless Data Transmission by Using Bias Modulation of NBUTC-PD Based W-Band Photonic Transmitter-Mixer
(2010)
Kuo, F. -M.
;
Yen-Lin, Ho
;
Shi, J. -W.
;
Chen, Nan-Wei
;
Jiang, Wen-, Jr.
We demonstrated near-ballistic uni-traveling-carrier photodiode based broadband photonic transmitter-mixers with quasi-Yagi radiators fed horn antennas. 100GHz wireless transmission with date rate as high as 12.5-Gb/s via bias modulation under high photocurrent (20mA) has been achieved. (C)2009 Optical Society of America
13.75-Gb/s OFDM Signal Generation for 60-GHz RoF System within 7-GHz License-Free Band via Frequency Sextupling
(2009)
Shih, Po-Tsung
;
Lin, Chun-Ting
;
Huang, Han-Sheng
;
Jiang, Wen-Jr
;
Chen, Jyehong
A 60-GHz RoF system with frequency sextupling is experimentally demonstrated. Based on modified SSB, a 13.75-Gb/s OFDM signal is generated within the 7-GHz license-free band. No penalty is observed after transmission over 25-km single-mode fiber.
14 Gbps 60 GHz RoF Link Employing a Simple System Architecture and OFDM Modulation
(2009)
Ng\'oma, Anthony
;
Sauer, Michael
;
Annunziata, Frank
;
Jiang, Wen-, Jr.
;
Shih, Po-Tsung
A radio-over-fiber system with a simple architecture is used to transport a 14 Gbps OFDM signal occupying the full 60 GHz band. Fiber lengths exceeding 3km are supported without any dispersion compensation.
150-km 103-GHz Direct-Detection OFDM-RoF System Employing Pilot-aided Phase Noise Suppression
(2014-01-01)
Huang, Hou-Tzu
;
Liang, Wan-Ling
;
Wei, Chia-Chien
;
Lin, Chun-Ting
;
Chi, Sien
Pilot-aided phase noise suppression (PPNS) is employed to demonstrate distance-and linewidth-insensitive 103-GHz DD-OFDM-RoF systems. With 10.3-MHz linewidth, PPNS lowers BER of -6-dBm signal from >10(-2) to <10(-3) over 150-km fiber and 2-m wireless transmission.
16-channel optical add-drop multiplexer consisting of a planar waveguide concave grating
(2007)
Lin, Chun-Ting
;
Huang, Yang-Tung
;
Huang, Jung-Yaw
;
光電工程學系
;
Department of Photonics
A new 16-channel optical add-drop multiplexer (OADM), which consists of one planar waveguide concave grating, two main ports, coupled waveguides, sixteen add ports, sixteen drop ports, and sixteen sets of 2 x 2 switches, is proposed.. The transmission characteristics of the light detected at the output waveguide are simulated by using a design example. The on-off crosstalks are less than -35.17 dB with the insertion losses of 4.71 to 4.83 dB.
2 x 2 MIMO OFDM-RoF System Employing LMS-Based Equalizer With I/Q Imbalance Compensation at 60 GHz
(2014-06-01)
Huang, Hou-Tzu
;
Shih, Po-Tsung
;
Lin, Chun-Ting
;
Cheng, Yu-Hsuan
;
Liang, Wan-Ling
Multiple-input-multiple-output (MIMO) technology is a promising method to increase spectral efficiency in wireless communications. In this paper, a 60-GHz orthogonal frequency-division multiplexing radio over fiber (OFDM-RoF) system employing 2 x 2 MIMO wireless technology is demonstrated. With the proposed equalizer employing least mean squares (LMS) algorithm, MIMO channel mixing and I/Q-mismatch can be compensated simultaneously. 16-QAM and 32-QAM OFDM signal transmissions under forward error correction (FEC) threshold (1 x 10(-3)) are demonstrated. A data rate of 76.3 Gb/s can be achieved with a bit-loading algorithm over 25-km fiber transmission and 3.5-m wireless transmission.
2 x 2 MIMO radio-over-fiber system at 60 GHz employing frequency domain equalization
(2012-01-02)
Lin, Chun-Ting
;
Ng'oma, Anthony
;
Lee, Wei-Yuan
;
Wei, Chia-Chien
;
Wang, Chih-Yun
This work experimentally demonstrates the efficacy of the 2 x 2 multiple-input multiple-output (MIMO) technique for capacity improvement of a 60-GHz radio-over-fiber (RoF) system employing single-carrier modulation format. We employ frequency domain equalization (FDE) to estimate the channel response, including frequency response of the 60 GHz RoF system and the MIMO wireless channel. Using FDE and MIMO techniques, we experimentally demonstrate the doubling the of wireless data capacity of a 60 GHz RoF system to 27.15 Gb/s using 16-QAM modulation format, with transmission over 25 km of standard single-mode fiber and 3 m wireless distance. (C) 2011 Optical Society of America
21 Gbps OFDM Wireless Signal Transmission at 60 GHz Using a Simple IMDD Radio-over-Fiber System
(2010)
Ng\'oma, Anthony
;
Shih, Po-Tsung
;
George, Jacob
;
Annunziata, Frank
;
Sauer, Michael
A simple double-sideband IMDD RoF system is successfully employed to directly transport a 21 Gbps OFDM signal at 60 GHz over 500 m of standard single-mode fiber and 10 m wireless distance. (C)2010 Optical Society of America
28-Gb/s 16-QAM OFDM Radio-over-Fiber System Within 7-GHz License-Free Band at 60 GHz Employing All-Optical Up-conversion
(2009)
Lin, Chun-Ting
;
Wong, Er-Zih
;
Jiang, Wen-Jr
;
Shih, Po-Tsung
;
Chen, Jason (Jyehong)
A record 28-Gb/s 16-QAM OFDM system within 7-GHz license-free band at 60 GHz employing all-optical up-conversion with frequency quintupling is experimentally demonstrated. Negligible penalty is observed following 100-km SMF transmission without any dispersion compensation. (C)2008 Optical Society of America
2x21 Gbps Symmetrical Full-Duplex Transmission of OFDM Wireless Signals over a Bidirectional IMDD Radio-over-Fiber System at 60 GHz
(2010)
Shih, Po-Tsung
;
Ng'oma, Anthony
;
Lin, Chun-Ting
;
Annunziata, Frank
;
Chen, Jyehong
A full-duplex bidirectional 60 GHz RoF system for in-building wireless applications employing DSB IMDD techniques is experimentally demonstrated. Symmetrical 2x21 Gbps transmission over 500-m standard single mode fiber and 2.5-m wireless distance is successfully achieved.
3.22-Gb/s WDM Visible Light Communication of a Single RGB LED Employing Carrier-Less Amplitude and Phase Modulation
(2013)
Wu, Fang-Ming
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Lin, Chun-Ting
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Wei, Chia-Chien
;
Chen, Cheng-Wei
;
Chen, Zhen-Yu
We experimentally demonstrate WDM-VLC employing CAP modulation and commercially available RGB-type LED. The record aggregate data rate of 3.22 Gb/s with the BER of less than 10(-3) is successfully achieved over >25-cm air-transmission.
31 Gbps RoF System Employing Adaptive Bit-Loading OFDM Modulation at 60 GHz
(2011-01-01)
Ng'oma, Anthony
;
Lin, Chun-Ting
;
He, Li-Ying Wang
;
Jiang, Wen-, Jr.
;
Annunziata, Frank
Record wireless data transmission of 31.4 Gbps within 7 GHz license-free band at 60 GHz is experimentally demonstrated using adaptive bit-loading OFDM modulation. Adaptive bit-loading OFDM also enables extended fiber transmission distances beyond 5km.
32.65-Gbps OFDM RoF Signal Generation at 60GHz Employing an Adaptive I/Q Imbalance Correction
(2010)
Jiang, Wen-Jr
;
Lin, Chun-Ting
;
He, Li-Ying Wang
;
Wei, Chia-Chien
;
Ho, Chun-Hung
We experimentally demonstrated an adaptive I/Q imbalance correction scheme to compensate I/Q-imbalance. With I/Q correction, a 32.65-Gbps OFDM signal at 60 GHz within 7-GHz license-free band is successfully generated and, following 25km SMF transmission, negligible power penalty is observed.
43.63-Gbit/s Multiple-User SC-FDMA PON With Sub-Nyquist Receiver and PAPR Reduction
(2018-10-01)
Lin, Chi-Hsiang
;
Fang, Ruei
;
Lin, Chun-Ting
;
Wei, Chia-Chien
;
Chi, Sien
In this letter, we propose a novel delay-division-multiplexing (DDM) scheme to enable SC-FDMA PON with a sub-Nyquist sampling rate ADC and lower PAPR, named time-interleaved FDMA (TI-FDMA). The proposed pre-processing method reduces the sampling rate of the ADC to 1/2 similar to 1/32 of the Nyquist sampling rate. The FFT size can be reduced to 1/32 (i.e., from 1024 to 32) due to lower sampling ratio and each user just needs to recover and demodulate their corresponding data without any additional DSP, which greatly reduces the complexity of the receiver. Meanwhile, the proposed TI-FDMA has lower PAPR than traditional localized FDMA (L-FDMA), interleaved FDMA (I-FDMA), and OFDM. Such the PAPR reduction makes TI-FDMA support the modulation format of 1 order higher compared to OFDM, thereby, leading to 12.5% capacity improvement. Employing the proposed scheme, up to 43.63-Gbps PON is experimentally demonstrated, and each of 32 users requires only 0.5-GSample/s ADC.
43.63-Gbit/s Multiple-User SC-FDMA PON with sub-Nyquist Receiver and PAPR Reduction
(2018-01-01)
Chang, Hao-Hsiang
;
Lin, Chi-Hsiang
;
Fang, Ruei
;
Lin, Chun-Ting
;
Wei, Chia-Chien
We demonstrate 43.63-Gbps SC-FDMA with 0.5-GSample/s sampling-rate receiver (1/32 Nyquist sampling rate) for each 32-user, which was experimentally demonstrated in commercial optical transmitter and receiver. A brief introduction of traditional SC-FDMA including L-FDMA and I-FDMA is contained. Meanwhile, a PAPR reduction is included in the proposed SC-FDMA system. The method of PAPR reduction makes the PAPR of SC-FDMA be isolated with the number of users and be lower than that of OFDM over 1-dB. Compared to OFDM, such reduction enables SC-FDMA to carry higher-order modulation format, achieving 12.5% capacity improvement (i.e. increases from 37.76 Gbit/s to 43.63 Gbit/s). Moreover, receivers' FFT size will be reduce to 1/32 of that in conventional SC-FDMA. We also compare results with L-FDMA, I-FDMA, and OFDM utilizing high sampling-rate ADC.
5-bit/s/Hz 50-Gbps W-band Optical/Wireless System Employing Single-Sideband Single-Carrier Modulation
(2014-01-01)
Ho, Chun-Hung
;
Cheng, Yu-Hsuan
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Huang, Hou-Tzu
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Lin, Chun-Ting
;
Wei, Chia-Chien
We experimentally demonstrate W-band radio-over-fiber system employing single-sideband single-carrier modulation with lower PAPR than OFDM. Up to 50-Gbps wireless transmission with the highest spectral efficiency of 5-bit/s/Hz at 103GHz can be achieved over 25-km fiber.
58.74-Gb/s 2 x 2 MIMO 60-GHz Optical/Wireless System With Simple Power-Detector Down-Conversion
(2019-06-01)
Chen, Wen-Huang
;
Chen, Chao-Wei
;
Lin, Chun-Ting
;
Wei, Chia-Chien
;
Chi, Sien
We demonstrate a 58.74-Gb/s V-band orthogonal frequency-division multiplexing (OFDM) radio-over-fiber (RoF) system employing the 2 x 2 multiple-input-multiple-output (MIMO) technology and power detector for down-conversion for the first time. Additional radio frequency (RF) tone is generated and transmitted from central station to replace the local oscillator at wireless receiver for power detector down-conversion. To enhance spectrum efficiency, the gap between OFDM signal and RF tone is not needed. However, the down-converted signal will suffer signal-to-signal beating interference (SSBI). In this letter, we propose and successfully employ the 2 x 2 MIMO SSBI mitigation schemes to mitigate SSBI, resulting in 45% capacity improvement.
60-GHz Millimeter-wave Over Fiber with Directly Modulated Dual-mode Laser Diode
(2016-06-14)
Tsai, Cheng-Ting
;
Lin, Chi-Hsiang
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Lin, Chun-Ting
;
Chi, Yu-Chieh
;
Lin, Gong-Ru
A directly modulated dual-mode laser diode (DMLD) with third-order intermodulation distortion (IMD3) suppression is proposed for a 60-GHz millimeter-wave over fiber (MMWoF) architecture, enabling new fiber-wireless communication access to cover 4-km single-mode-fiber (SMF) and 3-m wireless 16-QAM OFDM transmissions. By dual-mode injection-locking, the throughput degradation of the DMLD is mitigated with saturation effect to reduce its threshold, IMD3 power and relative intensity noise to 7.7 mA, -85 dBm and -110.4 dBc/Hz, respectively, providing huge spurious-free dynamic range of 85.8 dB/Hz(2/3). This operation suppresses the noise floor of the DMLD carried QPSK-OFDM spectrum by 5 dB. The optical receiving power is optimized to restrict the power fading effect for improving the bit error rate to 1.9 x 10(-3) and the receiving power penalty to 1.1 dB. Such DMLD based hybrid architecture for 60-GHz MMW fiber-wireless access can directly cover the current optical and wireless networks for next-generation indoor and short-reach mobile communications.