@inproceedings{59665819836c4c5fac900cc27ea32885,
title = "On the Construction of Polar Codes in Two-User Downlink NOMA with Power Allocation and Constellation-Rotation",
abstract = "We consider the joint construction of polar codes and power allocation based on rotated QPSK constellation in the two-user downlink non-orthogonal multiple access (NOMA) system. Our work is suitable for IoT-like networks where lightweight devices employ simple constellations with low data rate traffic, and the traditional coding performance analysis assuming Gaussian inputs and infinite blocklength may become less accurate. With the goal of achieving fairness and minimizing the maximum block-error-rate (BLER) among the NOMA users, the construction of polar codes, which takes into consideration the BLER estimated by the Gaussian-approximation-based density evolution (GA-DE) method, is jointly determined with the constellation-rotation angle and the power allocation over the NOMA users. Simulations verify that the proposed approach yields generally comparable BLER performance as the LDPC codes over the range of SNR considered while having shorter blocklength.",
keywords = "NOMA, Polar codes, finite block-length, optimization",
author = "Ng, {Benjamin K.} and Lam, {Chan Tong}",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 22nd IEEE International Conference on Communication Technology, ICCT 2022 ; Conference date: 11-11-2022 Through 14-11-2022",
year = "2022",
doi = "10.1109/ICCT56141.2022.10073253",
language = "English",
series = "International Conference on Communication Technology Proceedings, ICCT",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "276--280",
booktitle = "2022 IEEE 22nd International Conference on Communication Technology, ICCT 2022",
address = "United States",
}