Browsing by Author "Chiang, Shou-Chih"

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60-GHz optical/wireless MIMO system integrated with optical subcarrier multiplexing and 2x2 wireless communication
(2015-05-04)
Lin, Chi-Hsiang
;
Lin, Chun-Ting
;
Huang, Hou-Tzu
;
Zeng, Wei-Siang
;
Chiang, Shou-Chih
This paper proposes a 2x2 MIMO OFDM Radio-over-Fiber scheme based on optical subcarrier multiplexing and 60-GHz MIMO wireless transmission. We also schematically investigated the principle of optical subcarrier multiplexing, which is based on a dual-parallel Mach-Zehnder modulator (DP-MZM). In our simulation result, combining two MIMO OFDM signals to drive DP-MZM gives rise to the PAPR augmentation of less than 0.4 dB, which mitigates nonlinear distortion. Moreover, we applied a Levin-Campello bit-loading algorithm to compensate for the uneven frequency responses in the V-band. The resulting system achieves OFDM signal rates of 61.5-Gbits/s with BER of 10(-3) over 25-km SMF transmission followed by 3-m wireless transmission. (C) 2015 Optical Society of America
V-band Gapless OFDM RoF System with Power Detector Down-conversion and Novel Volterra Nonlinear Compensation
(2016)
Chiang, Shou-Chih
;
Li, Che-Hao
;
Lin, Chun-Ting
;
Huang, Hou-Tzu
;
Lin, Chi-Hsiang
V-band gapless OFDM RoF system with power detector down-conversion is proposed. We propose and successfully employ a novel Volterra nonlinear compensation to mitigate signal-to-signal beating interference, resulting in 22% data rate improvement with bit-loading algorithm.
V-band gapless OFDM RoF system with power detector down-conversion and novel Volterra nonlinear filtering
(2017-01-15)
Lin, Chun-Ting
;
Chiang, Shou-Chih
;
Li, Che-Hao
;
Huang, Hou-Tzu
;
Lin, Chi-Hsiang
This Letter presents a V-band gapless orthogonal frequency division multiplexing (OFDM) RoF system at 60 GHz employing a power detector to support vector signal down-conversion. Additional RF tone is generated and transmitted from a central station to replace the local oscillator at a wireless receiver for power detector down-conversion. To enhance the spectrum efficiency, the gap between the OFDM signal and the RF tone is not needed. However, the down-converted signal will suffer signal-to-signal interference (SSBI). In this Letter, we propose and successfully employ a novel Volterra nonlinear compensation to mitigate SSBI, resulting in a 22% data rate improvement with a bit-loading algorithm. (C) 2017 Optical Society of America