01
Immunity to noise & interference
Built-in error-correction coding (ECC/FEC) gives high immunity to noise and interference — damaged data is recovered on the fly.
Core technology
Why COFDM?
COFDM (Coded Orthogonal Frequency-Division Multiplexing) is the most robust audio-video transmission protocol — designed for distance, multipath and high-speed motion, and the international standard behind digital TV broadcasting.
02
Robust against multipath fading
Multi-carrier modulation resists the frequency-selective fading caused by terrain and building reflections, keeping links alive even in NLOS environments.
03
High-speed mobile reception
Adaptive channel estimation and frequency-domain equalization track fast-changing channels — proven at 350 km/h jet FPV and 1.0 km/s sounding-rocket trials.
System topology
Link architecture: split-frequency stealth by design
Video downlink and command uplink run on separate frequencies, independently. The one-way broadcast downlink needs no acknowledgment, so latency never grows with distance; the ground receiving station transmits nothing, staying silent and hard to direction-find. An adversary can only detect the airborne video RF — the command uplink frequency is never revealed, sheltering the link that matters most.
- One-way broadcast downlink: distance-independent, keeps streaming under pressure
- Silent receive stations: no transmission, hard to detect or locate
- Concealed uplink band: the adversary cannot tell which frequency to jam
- Unlimited receivers: AES-encrypted broadcast sharing of live video & intel (RVT / ATAK)
Core technology
Anti-jamming mechanisms
Wide tunable frequency range
100 MHz–6 GHz band support — relocate the whole link away from contested spectrum.
Dynamic channel switching
Manual on-the-fly retuning, or automatic switching driven by signal-quality monitoring — without dropping the link.
Split up/downlink (FDD/FDM)
Protects the command receiver — the uplink frequency never leaks with the strong downlink.
C2 hopping & spread spectrum
The narrow-band C2 channel supports FHSS/DSSS and background spectrum scanning.
Military-grade encryption
AES-128 / AES-256 against eavesdropping and injection.
Primary–secondary redundancy
Dual-link architecture fails over to a backup band when the primary is suppressed.
FAQ
Frequently asked questions
- Q1 What is COFDM?
- COFDM (Coded Orthogonal Frequency-Division Multiplexing) is a multi-carrier modulation technique with built-in error-correction coding, designed for long distance, multipath and high-speed motion. It is the most robust audio-video transmission protocol and the international standard behind digital TV broadcasting: the signal is spread across many subcarriers, and channel coding recovers data damaged in transit.
- Q2 Why is a COFDM link resistant to jamming?
- The resistance comes from link architecture and spectrum agility. Video downlink and command uplink run on separate frequencies (FDD/FDM); the one-way broadcast downlink needs no acknowledgment, and the ground receiving station transmits nothing — silent and hard to direction-find — so an adversary cannot tell which uplink frequency to jam. Combined with a wide tunable range from 100 MHz to 6 GHz, dynamic channel switching, FHSS/DSSS spread spectrum on the C2 channel and AES-128/AES-256 encryption, the link keeps operating in contested spectrum.
- Q3 What are the advantages in multipath (echo) transmission?
- Multipath echoes from terrain, buildings and the sea surface are fatal interference for traditional single-carrier microwave links — COFDM absorbs and repairs them instead: the guard interval soaks up the timing differences of reflected signals, and error-correction coding recovers subcarriers that land on faded frequencies. That is the advantage: in the mountainous, maritime and urban non-line-of-sight environments where ordinary links fail, COFDM keeps video and data flowing — the key to long-range operation over complex terrain.
MADE IN TAIWAN
Chip to software, sovereign in Taiwan
The core chip is a COFDM ASIC developed in Taiwan and validated through extensive real-world deployments at home and abroad; hardware, firmware, drivers and applications are all designed in-house. The ASIC approach brings mass-production cost advantages with a fully controlled supply chain.
- 01 Core chips: iTE (Taiwan) COFDM ASIC · UMC (Taiwan) foundry
- 02 Circuit design, firmware & software: HiDes
- 03 PCB / SMT: Taiwanese manufacturers
- 04 No PRC-origin supply chain — strategically secure communications
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