Review Article
Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey
Table 4
Comparisons of NOMA receivers.
| Receiver | Main character | Pros | Cons | Applications |
| MMSE-SIC | Reuses single-user receiver and SIC | Low complexity | Requires large SNR gaps among users | Almost all schemes, especially PD-NOMA | MPA/EPA | Symbol-level iterative detection | Near-ML symbol detection | Middle/high complexity | Sparse spreading NOMA | MPA-turbo/SIC | Iterative detection between symbol-level and bit-level | Better performance than MPA/EPA | High complexity | Sparse spreading NOMA | ESE-PIC | Iterative detection between symbol-level and bit-level | No requirement on sparsity | High complexity & hardware overhead | Especially bit-level NOMA |
|
|