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PHY Knowledge Hub

where physics meets
modern wireless

A deep-dive knowledge base covering 5G/6G PHY layer, quantum communications, ML for wireless, NTN, and ISAC. Built for PHY engineers who want to go beyond the spec.

5G NR PHY 6G Quantum ML + PHY NTN ISAC O-RAN Beamforming

01 — Core PHY

PRACH · Beamforming · O-RAN timing · PDCCH · Power Control

Foundational 5G NR PHY layer topics from 3GPP specs, with implementation-level detail.

11 articles · 2 tools

02 — ML + PHY

Channel Estimation · Neural Receivers · RL for Beams

Machine learning applied to physical layer problems — channel estimation to AI-driven beam management.

03 — Quantum + PHY

QKD · Entanglement-Assisted Comms · Quantum Channel Models

Quantum information theory meets wireless communications — post-classical PHY research directions.

04 — NTN + PHY

Satellite PHY · Doppler · LEO/MEO/GEO · 3GPP R17+

Non-terrestrial network PHY challenges — large Doppler shifts, long delays, and 3GPP NTN standardization.

05 — ML + Quantum

QML · Variational Circuits · Quantum-Enhanced Wireless

Quantum machine learning for signal processing — variational quantum algorithms and quantum advantage.

OFDM-ISAC · Joint Radar-Comms · Sensing-Comms Tradeoffs

Integrated Sensing and Communications — waveform design, joint PHY processing, and spectrum sharing.

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NTN + 5G/6G PHY — Complete Reference

LEO/MEO/GEO · Doppler · Timing Advance · PRACH · OTFS/AFDM · 3GPP Rel-17/18/19

OFDM vs OTFS vs AFDM — L1 Waveform Deep-Dive

CP-OFDM · OTFS delay-Doppler · AFDM chirp · BER · PAPR · 6G waveforms

5G NR PHY Calculators — Interactive RF & PHY Tools

Link budget · PRACH · Throughput · Power control · NTN Doppler

O-RAN FH Timing Window Diagram — WG4 CUS v08.00

Ta3 · Ta4 · T1a · T2a · interactive slot numerology

5G NR Interactive PHY Simulator — Full DL/UL Chain

DU TX · O-RAN Fronthaul · O-RU TX · OTA Channel · UE/O-RU RX · DU RX

5G NR Beamforming — 3GPP Complete Reference

Codebook design · CSI-RS · Beam management · Massive MIMO

3GPP AI/ML for 6G — Use Cases & Architecture

Air interface · Network architecture · AI-native wireless

5G NR PHY — TS 38.211/212/213/214 Explained

Physical channels · Channel coding · Control & data procedures

5G Channel Models — TR 38.901 Explained

CDL/TDL models · Spatial consistency · Massive MIMO channels

5G NR PHY Initial Power Control — Complete Reference

MSG1/MSG3/PUCCH power control · TS 38.213/38.321

OFDM Basics — DFT/FFT through 4G/5G/6G Waveforms

11 sections · 21 charts · from DFT to modern waveform design

ISAC OFDM Notebook v2 — Integrated Sensing & Communications

Joint radar-comms · Waveform design · Sensing-comms tradeoffs

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PHY Consulting & Contract Work

Available for 5G/6G PHY design, O-RAN integration, beamforming, ML+PHY research, and contract engineering work.

5G NR PHY O-RAN Beamforming ML+PHY 6G

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