TY - JOUR
T1 - Utilization of multi-band OFDM modulation to increase traffic rate of phosphor-LED wireless VLC
AU - Yeh, Chien Hung
AU - Chen, Hsing Yu
AU - Chow, Chi-Wai
AU - Liu, Yen Liang
PY - 2015/1/26
Y1 - 2015/1/26
N2 - To increase the traffic rate in phosphor-LED visible light communication (VLC), a multi-band orthogonal frequency division multiplexed (OFDM) modulation is first proposed and demonstrated. In the measurement, we do not utilize optical blue filter to increase modulation bandwidth of phosphor-LED in the VLC system. In this proposed scheme, different bands of OFDM signals are applied to different LED chips in a LED lamp, this can avoid the power fading and nonlinearity issue by applying the same OFDM signal to all the LED chips in a LED lamp. Here, the maximum increase percentages of traffic rates are 41.1%, 17.8% and 17.8% under received illuminations of 200, 500 and 1000 Lux, respectively, when the proposed three-band OFDM modulation is used in the VLC system. In addition, the analysis and verification by experiments are also performed.
AB - To increase the traffic rate in phosphor-LED visible light communication (VLC), a multi-band orthogonal frequency division multiplexed (OFDM) modulation is first proposed and demonstrated. In the measurement, we do not utilize optical blue filter to increase modulation bandwidth of phosphor-LED in the VLC system. In this proposed scheme, different bands of OFDM signals are applied to different LED chips in a LED lamp, this can avoid the power fading and nonlinearity issue by applying the same OFDM signal to all the LED chips in a LED lamp. Here, the maximum increase percentages of traffic rates are 41.1%, 17.8% and 17.8% under received illuminations of 200, 500 and 1000 Lux, respectively, when the proposed three-band OFDM modulation is used in the VLC system. In addition, the analysis and verification by experiments are also performed.
UR - http://www.scopus.com/inward/record.url?scp=84921775346&partnerID=8YFLogxK
U2 - 10.1364/OE.23.001133
DO - 10.1364/OE.23.001133
M3 - Article
AN - SCOPUS:84921775346
VL - 23
SP - 1133
EP - 1138
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 2
ER -