TDD-FDD 업링크 및 다운링크 주파수 비대칭 전송 vcan2002

특색

• 업링크 및 다운링크 주파수의 비대칭 전송 지원
• 노이즈 플로어 감지 및 자동 주파수 선택 지원
• AES256 암호화 지원
• 장거리 광대역 전송 지원

매개 변수

채널은 4Mbps의 용량을 제공할 수 있습니다., 포드는 2Mbps로 설정할 수 있습니다.

150km 테스트 영상

자주하는 질문

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

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

• 업링크 (f2): 1.4 GHz의
• 다운링크 (f1): 17 GHz의

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

• TX (업링크): User configurable from 170 MHz의 6000 메가 헤르츠
• RX (다운링크): User configurable from 170 MHz의 860 메가 헤르츠
• For RX frequencies over 860 메가 헤르츠, 추가 down-conversion stage is required.

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

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

에이: This system combines the best features of FDD (주파수 분할 듀플렉스) 과 TDD (시분할 듀플렉스) 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 (비디오 & 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, 자동 주파수 선택, adaptive bitrate, 자동 재전송, 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: 까지 지원 200 km air-to-ground range and up to 16 Mbps의 대역폭, allowing you to transmit clear HD video while simultaneously sending telemetry and control data in both directions.

간단히 말해서: 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. 그만큼 FDD + TDD hybrid gives you the perfect balance: 낮은 대기 시간 + 고효율 + 강력한 간섭 방지 성능, making it ideal for demanding drone applications such as power line inspection, 비상 대응, 공중 측량, and long-range surveillance.