A Novel Rotated Constellation-based LLR Detector for Flexible NOMA based OFDM-IM Scheme
Information Theory
2023-05-02 v1 Signal Processing
math.IT
Abstract
OFDM-IM NOMA is a newly created flexible scheme for future generation communication systems. For the downlink OFDM-IM NOMA system, a low-complexity "rotated constellation based log likelihood ratio (LLR) detector" has been proposed in this work. This detector is able to significantly reduce the complexity by employing the rotating constellation-based concept and the log-likelihood ratio-based algorithm together. Complexity analysis and simulation results show that the proposed detector achieves significantly lower computational complexity and much better error performance than the earlier introduced detectors under different scenarios for the OFDM-IM NOMA scheme.
Keywords
Cite
@article{arxiv.2305.00173,
title = {A Novel Rotated Constellation-based LLR Detector for Flexible NOMA based OFDM-IM Scheme},
author = {Subham Sabud and Preetam Kumar},
journal= {arXiv preprint arXiv:2305.00173},
year = {2023}
}
Comments
5 pages, 4 figures