Table 9 Comparison of various studies on adaptive modulation and hierarchical classification.

From: Cognitive link adaptation via modulation scheme classification in narrowband networks under AWGN and SUI channel conditions

Study

Adaptive modulation

Hierarchical classification

ML-based approach

Real-time adaptation

Modulation diversity

Adaptive modulation under Doppler effects14

✓

✗

✗

✗

✗

HLD classification (Jajo et al.)15

✗

✓

✗

✗

✗

SUI channel model (A. Hashib et al.)16

✓

✗

✗

✗

✗

Cross-layer SDR Design (Shahzad et al.)17

✓

✗

✗

✓

✗

AMR classifier (Ali et al.)18

✗

✓

✓

✗

✗

Hierarchical SVM classifier19

✗

✓

✓

✗

✗

Cognitive radio in satellite networks13

✗

✗

✓

✓

✗

Our approach

✓

✓

✓

✓

✓