TY - JOUR
T1 - Layered constellation generation method based on SIM-OFDM
AU - Wang, Xin
AU - Zhang, Qi
AU - Xin, Xiangjun
AU - Gao, Ran
AU - Tian, Qinghua
AU - Tian, Feng
AU - Wang, Yongjun
AU - Wang, Xishuo
AU - Tao, Ying
AU - Zhang, Wei
N1 - Publisher Copyright:
© 2020
PY - 2020/12/15
Y1 - 2020/12/15
N2 - A layered QAM constellation generation method is proposed and it is applied to the SIM-OFDM system. In this method, the bit sequence is grouped layer by layer according to the specific bit and mapped to the corresponding constellation points. In this paper, the 24QAM-SIM-OFDM, 48QAM-SIM-OFDM, 80QAM-SIM-OFDM and 120QAM-SIM-OFDM constellations are generated by this method, and their performance is analyzed. The result shows that the BER of 80QAM-SIM-OFDM is lower than that of 64QAM-SIM-OFDM when SNR is low. And when BER is 3.8×10−3, the SNR requirement of layered 80QAM-SIM-OFDM signal is about 0.12 dB lower than that of 64QAM-SIM-OFDM, and the SNR requirement of layered 120QAM-SIM-OFDM signal is about 3 dB lower than that of 128QAM-SIM-OFDM.
AB - A layered QAM constellation generation method is proposed and it is applied to the SIM-OFDM system. In this method, the bit sequence is grouped layer by layer according to the specific bit and mapped to the corresponding constellation points. In this paper, the 24QAM-SIM-OFDM, 48QAM-SIM-OFDM, 80QAM-SIM-OFDM and 120QAM-SIM-OFDM constellations are generated by this method, and their performance is analyzed. The result shows that the BER of 80QAM-SIM-OFDM is lower than that of 64QAM-SIM-OFDM when SNR is low. And when BER is 3.8×10−3, the SNR requirement of layered 80QAM-SIM-OFDM signal is about 0.12 dB lower than that of 64QAM-SIM-OFDM, and the SNR requirement of layered 120QAM-SIM-OFDM signal is about 3 dB lower than that of 128QAM-SIM-OFDM.
UR - http://www.scopus.com/inward/record.url?scp=85089755699&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2020.126350
DO - 10.1016/j.optcom.2020.126350
M3 - Article
AN - SCOPUS:85089755699
SN - 0030-4018
VL - 477
JO - Optics Communications
JF - Optics Communications
M1 - 126350
ER -