Research Article
A Blind Detection Algorithm for Modulation Order in NOMA Systems
@INPROCEEDINGS{10.1007/978-3-030-06161-6_67, author={Kai Cheng and Ningbo Zhang and Guixia Kang}, title={A Blind Detection Algorithm for Modulation Order in NOMA Systems}, proceedings={Communications and Networking. 13th EAI International Conference, ChinaCom 2018, Chengdu, China, October 23-25, 2018, Proceedings}, proceedings_a={CHINACOM}, year={2019}, month={1}, keywords={NOMA Blind detection Modulation order}, doi={10.1007/978-3-030-06161-6_67} }- Kai Cheng
Ningbo Zhang
Guixia Kang
Year: 2019
A Blind Detection Algorithm for Modulation Order in NOMA Systems
CHINACOM
Springer
DOI: 10.1007/978-3-030-06161-6_67
Abstract
The blind detection algorithm for modulation order (MOD) of interference user in power-domain non-orthogonal multiple access (NO-MA) is studied by academics. Maximum likelihood method is the optimal approach, but with huge computational complexity. A sub-optimal approach based on max-log approximation is deduced which can reduce computational complexity, but with performance degradation. This paper investigates an improved blind detection algorithm for modulation order based on max-log likelihood approach in NOMA systems. Unlike the other two algorithms, the proposed algorithm takes the statistical characteristics of the received signal into consideration. The complexity analysis and link-level simulation results are provided to verify that the proposed method outperforms the max-log likelihood method with a little additional computational complexity, and it is a good trade-off between complexity and performance.