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| FDD cofdm network port dual antenna transceiver module with two frequencies for uplink and downlink Our COFDM transmitter ensures real-time, low-latency video transmission, even in challenging non-line-of-sight conditions! |
COFDM FDD (Frequency Division Duplex) – What Is It?
COFDM FDD stands for Coded Orthogonal Frequency Division Multiplexing with Frequency Division Duplexing. It is a wireless transmission technology that enables simultaneous two-way communication using COFDM modulation, where uplink and downlink transmissions occur on separate frequency channels.
🔍 How COFDM FDD Works
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COFDM Transmission 📡
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The signal is divided into multiple subcarriers, ensuring strong resistance to multipath interference and signal fading.
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Frequency Division Duplexing (FDD) 🔄
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Uplink (sending data) and downlink (receiving data) operate on separate frequency bands (e.g., Uplink: 2.3GHz, Downlink: 2.5GHz).
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This allows continuous two-way communication without interference between signals.
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🔥 Key Benefits of COFDM FDD
✔ Simultaneous Uplink & Downlink Communication – Supports real-time video, telemetry, and control data.
✔ Long-Range & Non-Line-of-Sight (NLOS) Performance – Works in urban, mountainous, and dynamic environments.
✔ Low Latency & High Data Throughput – Essential for drone command links, surveillance, and live broadcasting.
✔ Stable & Reliable Transmission – Ideal for high-mobility applications (e.g., UAVs, military, and emergency response).
✔ Better Spectrum Efficiency – Unlike TDD (Time Division Duplex), which shares one channel, FDD reduces network congestion by separating frequencies.
📌 COFDM FDD Applications
🚁 UAV & Drone Communication – Real-time video downlink and telemetry uplink for long-range missions.
🚔 Tactical & Military Operations – Secure bi-directional communication between field units and command centers.
🎥 Broadcasting & Live Events – Reliable video streaming from remote locations.
🚑 Emergency & Public Safety – Real-time video feeds for rescue operations, police, and disaster response.
🏭 Industrial & Infrastructure Monitoring – Wireless data links for oil rigs, power plants, and remote facilities.
🚀 COFDM FDD vs. COFDM TDD (Time Division Duplex)
| Feature | COFDM FDD | COFDM TDD |
|---|---|---|
| Uplink & Downlink | Separate frequencies | Time-shared on the same frequency |
| Latency | Lower | Slightly higher |
| Efficiency in High-Traffic Environments | Better for long-range | More efficient in limited bandwidth |
| Interference | Less interference | Higher risk of self-interference |
| Best Use Cases | Long-range UAVs, military, and broadcast | Short-range communication, WiFi-like applications |
