Drone'lar veya İHA'lar için kablosuz iletim çözümü seçerken, customers often ask about OFDM ve COFDM, Pixhawk telemetry integration, and performance in obstructed environments. Here we answer the most common questions.

İçindekiler

Q1: Can TX900 be modified to use COFDM technology?

bir: Yok hayır, TX900 is based on OFDM with TDD (Zaman Bölmeli Dubleks). Şunun için optimize edilmiştir: low-latency video and bidirectional telemetry and cannot be converted to COFDM.

2. Çeyrek: Why consider COFDM instead of OFDM?

COFDM is preferred when NLOS performance kritik, such as in kentsel alanlar, dağlık arazi, or obstructed environments. Its advantages include:

Güçlü diffraction and multipath resistance
Reliable video transmission in harsh RF conditions
High stability in challenging environments

3. Çeyrek: OFDM vs COFDM – Key Differences

Özellik	OFDM (TX900)	COFDM
System Complexity	Düşük	Higher
Gecikme	Düşük (real-time control)	Biraz daha yüksek
Best Environment	LOS / Semi-LOS	NLOS / Obstructed
Veri + Video	Bidirectional telemetry & HD video	Video-centric; telemetry may need adaptation
Dubleks	TDD	Usually FDD

4. Çeyrek: COFDM Solutions for UAVs

If COFDM is needed, tavsiye ediyoruz:

Vcan1886 Mini COFDM Module

FDD-based COFDM transmission
Video + data over Ethernet (RJ45)
Suitable for NLOS environments
View Product

Customized High-Power COFDM Options:

300–500 MHz COFDM IP RJ45 Transceiver, 10 PA'da
View Product
336–554 MHz COFDM IP FDD Transceiver, 5 PA'da
View Product

Notlar:

Larger/heavier enclosures – less suitable for small UAVs
RS232 data output only; Pixhawk requires RS232-to-TTL conversion

S5: How to choose between TX900 (OFDM) and COFDM?

Choose TX900 (OFDM) if:

LOS or lightly obstructed environment
Low-latency video and telemetry is required
UAV size and weight are limited

Choose COFDM if:

NLOS or harsh environment
Diffraction and multipath resistance are critical
Slightly larger hardware is acceptable

S6: Integrating COFDM with Pixhawk

RS232-to-TTL conversion may be needed
Integration requires planning due to limited data ports
Works best when NLOS reliability is more important than minimal latency

Çözüm:
TX900 OFDM modules are ideal for lightweight UAVs in LOS conditions, delivering low-latency video and telemetry. COFDM solutions provide better NLOS performance, but may require larger hardware and additional integration effort for Pixhawk telemetry.