# Hybrid NOMA Protocol with Relay Adaptive AF/DF Collaboration and Its Modeling Analysis in NB-IoT
## 3 Performance Modeling Analysis of H-NOMA Protocol
### Relay-Based Adaptive Collaboration and H-NOMA Signal Transmission Process
#### 3.1.2 Collaboration Stage
[PERSON] researched the literature, provided the mathematical models, designed the algorithm, completed numerical simulations, took charge of the original draft preparation, and edited the manuscript; [PERSON] conceived the study concepts, improved the systematic research and analysis methodology, and supervised the completion of the refinement of the paper; [PERSON], [PERSON] and [PERSON] gave valuable suggestions for revision and checked formula deducing and English grammar. All authors have read and agreed to the published version of the manuscript. This research was funded in part by the National Natural Science Foundation of China (61663024) and in part by the \"Hongliu\" First Class Discipline Development Project of Lanzhou University of Technology (225305). Not applicable. The data supporting this article are from previously reported studies and datasets, which have been cited. The authors declare no conflict of interest. ## References

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