ISACSpine Optical ISAC Backhaul & High-Speed Backbone Networks

ISACSpine formalizes 400G/800G coherent optical fronthaul networks, analog radio-over-fiber microwave photonic distribution, and dual-use optical fiber vibration sensing.

ISACSpine Coherent Optical Fronthaul & Photonic Stack

ISAC Core: Spine Core — 800G Optical & Microwave Photonics

6G ISAC Nodes & Beamforming Subsystems

800G Coherent Optical Transceiver
Microwave Photonic Laser Mixer
Analog Radio-over-Fiber (A-RoF)
Distributed Acoustic Sensor (DAS)
Non-Blocking Clos Switch Fabric

Architectural Layers & Waveform Pipelines

Couche 1: Forme d onde à double fonction et bande de base (OTFS / OFDM-Radar / Fractional Fourier Transform / Ambiguity Function): Modulation OTFS et synthèse fractionnaire de chirp atteignant une interférence inter-porteuse nulle sous de fortes dispersions Doppler.
Couche 2: Massive MIMO et frontaux de formation de faisceaux (140 GHz D-Band / True-Time-Delay (TTD) / Hybrid Analog-Digital Beamforming): Réseaux à commande de phase actifs Sub-THz avec atténuation du strabisme de faisceau, faisceaux de données et lobes de suivi radar simultanés.
Couche 3: Traitement du signal radar et nuage de points 4D (2D-FFT Range-Doppler / MUSIC AoA / CFAR Detection / Micro-Doppler Extraction): Résolution sub-décimétrique de portée et de vitesse, détection CFAR et classification micro-Doppler de marche biométrique et hélices de drones.
Couche 4: Orchestration de la détection de réseau et 3GPP Rel-19 (3GPP Rel-19 ISAC Core / Sensing Function (SF) / Reconfigurable Intelligent Surfaces (RIS)): Réseaux radar collaboratifs sans cellule, allocation dynamique des ressources temps-fréquence équilibrant SLA et temps de revisite radar.

Sensing Telemetry & Benchmarks: <5 cm (Résolution de portée) | 0.1 m/s (Précision de vitesse) | <10 ms (Latence de trame radar) | 3GPP Rel-19 (Standard mondial)

Coherent Optics & Microwave Photonics in ISACSpine

Massive MIMO arrays operating in sub-THz spectrum generate terabits of raw radar and communication traffic that overwhelm legacy copper or microwave backhauls. ISACSpine defines the optical spine infrastructure connecting antenna radio heads to centralized baseband pools.

Core Engineering Areas

Coherent Optical Fronthaul Transport and 800G Transceivers — Dense Wavelength Division Multiplexing (DWDM) optical networks transporting digitized radio signals over single-mode fiber with zero latency jitter.
Analog Radio-Over-Fiber (A-RoF) and Microwave Photonics — Direct optical modulation of high-frequency microwave radar waveforms, centralizing RF generation and reducing remote radio head complexity.
Low-Latency Spine-Leaf Switching for Baseband Aggregation — Non-blocking spine-leaf Ethernet switching fabrics interconnecting hundreds of distributed cell sites with pooled GPU accelerators.