TDD-FDD上下行频率非对称传输vcan2002

特征

• Support asymmetric transmission of uplink and downlink frequencies
• Support noise floor detection and automatic frequency selection
• Supports AES256 encryption
• Support long-distance large-bandwidth transmission

范围

The channel can provide a capacity of 4Mbps, and the pod can set to 2Mbps

150km test video

常问问题

Q: Can the uplink and downlink working frequencies be configured by the user?

一个: For standard models, the working frequencies are factory preset and cannot be modified by the user.

• 上行链路 (f2): 1.4 兆赫
• 下行 (f1): 17 兆赫

If your application requires user-adjustable frequencies, we recommend using the FDD transceiver module.

• TX (上行链路): User configurable from 170 兆赫至 6000 兆赫
• 接收 (下行链路): User configurable from 170 兆赫至 860 兆赫
• For RX frequencies over 860 兆赫, an additional down-conversion stage is required.

Please select the appropriate model based on whether fixed or user-configurable frequency operation is needed.

Q: What are the advantages of the FDD + TDD hybrid technology in this video & data transmission system?

一个: This system combines the best features of 频分双工 (频分双工) 和 时分双工 (时分双工) to deliver superior performance for professional drone operations.

• Real-time two-way communication with ultra-low latency (FDD advantage): Separate frequencies are used for downlink (视频 & data to ground) and uplink (control commands from ground). This enables true simultaneous transmission, so you get smooth live video and instant control response without any waiting or switching delays.
• High spectrum efficiency and flexible bandwidth allocation (TDD advantage): The system dynamically adjusts bandwidth between video and control/data as needed. This allows higher overall data rates and makes the best use of available radio spectrum.
• Excellent anti-interference capability and reliability: With real-time interference detection, automatic frequency selection, adaptive bitrate, 自动重传, and smart power control, the link remains stable even in complex environments with multipath interference or crowded radio frequencies.
• Long range and high-quality transmission: 支持最多 200 千米 air-to-ground range and up to 16 Mbps 带宽, allowing you to transmit clear HD video while simultaneously sending telemetry and control data in both directions.

简单来说: Pure FDD offers excellent low-latency two-way performance but can be less spectrum-efficient. Pure TDD is very efficient and flexible but may introduce slight delays. 该 频分双工 + TDD hybrid gives you the perfect balance: 低延迟 + 高效率 + 抗干扰性能强, making it ideal for demanding drone applications such as power line inspection, 紧急响应, 航空测量, and long-range surveillance.