TY - GEN
T1 - A novel multi-dimensional constellation design method based on lattices for sparse code multiple access
AU - Yu, Han
AU - Wang, Zhenyong
AU - Li, Dezhi
AU - Qing, Guo
AU - Jie, Li
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/2
Y1 - 2016/7/2
N2 - Sparse Code Multiple Access (SCMA), as a new non-orthogonal multiple access scheme, achieves the good performance to access to massive information. Shaping gain of a multi-dimensional constellation is the main source of the performance improvement. However, when the number of constellation points is large, the process of the constellation design is too complex. In this paper, a novel multidimensional constellation design method based on lattices is proposed. The constellation with spherical boundary, which has the largest shaping gain, is designed and correspondingly a simplified optimization algorithm is proposed. We present the capacity of the constrained constellation on the AWGN channel. Experimental results show that the proposed constellation design method reduces the average transmit power. In addition, compared to orthogonal frequency division multiple access (OFDMA), the performance of the system is improved.
AB - Sparse Code Multiple Access (SCMA), as a new non-orthogonal multiple access scheme, achieves the good performance to access to massive information. Shaping gain of a multi-dimensional constellation is the main source of the performance improvement. However, when the number of constellation points is large, the process of the constellation design is too complex. In this paper, a novel multidimensional constellation design method based on lattices is proposed. The constellation with spherical boundary, which has the largest shaping gain, is designed and correspondingly a simplified optimization algorithm is proposed. We present the capacity of the constrained constellation on the AWGN channel. Experimental results show that the proposed constellation design method reduces the average transmit power. In addition, compared to orthogonal frequency division multiple access (OFDMA), the performance of the system is improved.
KW - Internet of Everything
KW - SCMA
KW - massive information
KW - multi-dimensional constellation
KW - shaping gain
UR - https://www.scopus.com/pages/publications/85016286200
U2 - 10.1109/ICSP.2016.7878029
DO - 10.1109/ICSP.2016.7878029
M3 - 会议稿件
AN - SCOPUS:85016286200
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 1264
EP - 1269
BT - ICSP 2016 - 2016 IEEE 13th International Conference on Signal Processing, Proceedings
A2 - Baozong, Yuan
A2 - Qiuqi, Ruan
A2 - Yao, Zhao
A2 - Gaoyun, An
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE International Conference on Signal Processing, ICSP 2016
Y2 - 6 November 2016 through 10 November 2016
ER -