Agentic Sionna Link Adaptation Mini-Lab

Sionna PHY + LDPC BLER + MCS Strategy Leaderboard + LLM Orchestration

Click any block to open the explanation Animated arrows show project flow Built to mimic the NVLabs-style idea → evaluate → leaderboard loop
1) Concept Layer
↗
SINR → CQI → MCSBuild the RF control chain before Sionna simulation.
✓×
HARQ ACK/NACKUse success/failure feedback as the reliability signal.
≋
OLLA AdjustmentMove MCS aggressiveness up/down to target BLER.
Build intuition for link adaptation behavior before running full PHY simulations.
➜
control
logic
2) Sionna PHY Simulation
01
Random Information BitsPayload bits used as the source data.
↓
▣
5G LDPC EncoderAdds coding redundancy for error correction.
↓
✣
QAM MapperMaps coded bits to QPSK/16QAM/64QAM/256QAM symbols.
↓
≈
AWGN ChannelAdds controlled noise to represent radio quality.
↓
▽
Soft DemapperConverts noisy symbols into soft LLR confidence values.
↓
☑
5G LDPC DecoderAttempts to recover original information bits.
↓
⌁
BER / BLER CurvesMeasure bit and block reliability versus Eb/N0.
➜
simulate
MCS-like
profiles
3) MCS Profile Library
QPSK
R0.30
QPSK
R0.50
16QAM
R0.45
16QAM
R0.60
64QAM
R0.50
64QAM
R0.65
64QAM
R0.80
256QAM
R0.70
256QAM
R0.85
For each profile: BLER, raw SE, effective SE, and 10% BLER threshold.
➜
evaluate
candidate
policies
4) Strategy Optimization Loop
Candidate Strategies
  • Conservative
  • Aggressive
  • Highest SE under BLER
  • Penalty-based
Evaluation Tool
  • Runs strategy
  • Calculates score
  • Returns SUCCESS, metric
Leaderboard
  • Ranks strategies
  • Tracks SE, BLER, violations
  • Shows best policy
Orchestrator
  • Rule-based Gen 2
  • LLM Gen 3
  • Proposes new ideas
➜
deduplicate
equivalent
behaviors
5) Best Unique Policy
★
Best Strategy
Highest SE Under BLER Target
Avg Effective SE
≈ 4.75 bits/s/Hz
Avg BLER
≈ 9.21%
BLER Violation Rate
≈ 11.43%
Selected Profiles
9 unique MCS profiles
Choose the highest usable MCS while keeping BLER near target.
● ● ● ➜ Project Flow: Concept Model → Sionna PHY Simulation → LDPC BLER Curves → Strategy Leaderboard → LLM/Rule-Based Optimization → Best Policy ➜ ● ● ●