TY - JOUR
T1 - Joint-Mapping Orthogonal Frequency Division Multiplexing with Subcarrier Number Modulation
AU - Wen, Miaowen
AU - Li, Jun
AU - Dang, Shuping
AU - Lia, Qiang
AU - Mumtaz, Shahid
AU - Arslan, Huseyin
N1 - KAUST Repository Item: Exported on 2021-03-23
Acknowledgements: This work was supported in part by National Nature Science Foundation of China under Grants 61871190 and 61872102, in part by the International Collaborative Research Program of Guangdong Science and Technology Department under Grant No. 2020A0505100061, in part by the Natural Science Foundation of Guangdong Province under Grant 2018B030306005, in part by the Open Research Fund of the National Mobile Communications Research Laboratory, Southeast University under Grant 2020D03, and in part by the Fundamental Research Funds for the Central Universities under Grant 2019SJ02.
PY - 2021
Y1 - 2021
N2 - Orthogonal frequency division multiplexing with subcarrier number modulation (OFDM-SNM) has been recently proposed to improve the spectral efficiency (SE) of the traditional OFDM system. In this paper, we propose a joint-mapping OFDM-SNM (JM-OFDM-SNM) scheme to transmit the signal vector with a constant length of information bits by jointly considering the subcarrier activation patterns and constellation symbols. A low-complexity detection scheme based on log-likelihood ratio criterion is proposed to relieve the high computational complexity of the maximum-likelihood detection at the cost of a negligible performance loss. Upper-bounded bit error rate (BER) and lower-bounded achievable rate are both derived in closed-form to evaluate the performance of JM-OFDM-SNM. To suit different application scenarios, we further propose two enhanced schemes, named adaptive JM-OFDM-SNM (AJM-OFDM-SNM) and JM-OFDM with in-phase/quadrature SNM (JM-OFDM-IQ-SNM), where the former adjusts the constellation orders for different numbers of active subcarriers, and the latter extends the indexing to in-phase and quadrature domains. Simulation results corroborate the tightness of the derived BER expression in the high signal-to-noise ratio region and show that (A)JM-OFDM-SNM improves the performance of OFDM-SNM, while both AJM-OFDM-SNM and JM-OFDM-IQ-SNM schemes perform better than JM-OFDM-SNM at the same SE.
AB - Orthogonal frequency division multiplexing with subcarrier number modulation (OFDM-SNM) has been recently proposed to improve the spectral efficiency (SE) of the traditional OFDM system. In this paper, we propose a joint-mapping OFDM-SNM (JM-OFDM-SNM) scheme to transmit the signal vector with a constant length of information bits by jointly considering the subcarrier activation patterns and constellation symbols. A low-complexity detection scheme based on log-likelihood ratio criterion is proposed to relieve the high computational complexity of the maximum-likelihood detection at the cost of a negligible performance loss. Upper-bounded bit error rate (BER) and lower-bounded achievable rate are both derived in closed-form to evaluate the performance of JM-OFDM-SNM. To suit different application scenarios, we further propose two enhanced schemes, named adaptive JM-OFDM-SNM (AJM-OFDM-SNM) and JM-OFDM with in-phase/quadrature SNM (JM-OFDM-IQ-SNM), where the former adjusts the constellation orders for different numbers of active subcarriers, and the latter extends the indexing to in-phase and quadrature domains. Simulation results corroborate the tightness of the derived BER expression in the high signal-to-noise ratio region and show that (A)JM-OFDM-SNM improves the performance of OFDM-SNM, while both AJM-OFDM-SNM and JM-OFDM-IQ-SNM schemes perform better than JM-OFDM-SNM at the same SE.
UR - http://hdl.handle.net/10754/668180
UR - https://ieeexplore.ieee.org/document/9380189/
U2 - 10.1109/TCOMM.2021.3066584
DO - 10.1109/TCOMM.2021.3066584
M3 - Article
SN - 1558-0857
SP - 1
EP - 1
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
ER -