Hiển thị tất cả 7 kết quả

FDD, Uplink and Downlink use two different frequencies.

FDD là viết tắt của Song công phân chia tần số, and it refers to a method of communication used in wireless systems, bao gồm wireless video data transceivers, to allow simultaneous two-way communication over different frequencies.

How FDD Works in Wireless Video Transceivers

TRONG FDD, cái máy phát và máy thu operate on separate frequencies, allowing for simultaneous transmission and reception of data. This is particularly useful for systems like wireless video data transceivers that require constant, real-time data flow, chẳng hạn như trong FPV (Góc nhìn thứ nhất) hệ thống, phát trực tiếp, or professional video transmission.

  • Transmit Frequency (Tx): The signal is sent from the device to the receiver (ví dụ., the video feed from a drone).

  • Nhận tần số (Rx): The signal is sent from the receiver back to the transmitter (ví dụ., dữ liệu đo từ xa, control commands, or feedback).

By using different frequencies for transmit and receive, FDD allows for:

  1. Simultaneous transmission and reception: Video data can be sent and received at the same time, không có sự can thiệp.

  2. Clearer, more stable communication: With separate channels for each direction, FDD minimizes the risk of signal collisions or delays.

  3. Higher bandwidth: Because the two channels are separate, there’s more room for data transfer, allowing for high-quality video transmission with less latency.

Benefits of FDD in Wireless Video Transceivers

  • Độ trễ thấp: FDD ensures real-time, truyền video có độ trễ thấp, essential for applications like FPV drone flying or live event broadcasting.

  • Độ tin cậy: With separate channels for sending and receiving data, the system can handle interference better and maintain a stable connection.

  • Improved Performance: It supports higher data rates and allows for continuous feedback, ensuring smooth operation even with high-quality video streams.

FDD vs. TDD (Song công phân chia thời gian)

  • FDD: Uses two separate frequency bands for transmitting and receiving signals simultaneously. It’s ideal for high-speed and continuous communication, making it popular in wireless video systems.

  • TDD: Uses the same frequency band for both transmission and reception but switches between them in time slots. It is more efficient for systems with asymmetric traffic but can have higher latency compared to FDD.

TRONG wireless video data transceivers, FDD is commonly used to ensure real-time transmissionreliable communication, making it a key feature for professionals and enthusiasts requiring high-quality, uninterrupted video streams.


VTX module duplex