COFDM one-way direction Video or Data transmission for UDP protocol
Table of Contents
Feature
- Specially customized for customers who require UDP one-way transmission
- Using cofdm unidirectional transmission
- The transmitter and receiver both support the Ethernet network interface RJ45 video or data input and output.
- This customized development version supports two protocol controls: debug UART and control UART.
- Supports sending AT commands via the computer serial port
- Supports additional LCD parameter configuration board
- The receiver supports two diverse antennas
- If the customer needs it, a relay board can also be configured.
COFDM UDP Transmitter Module and CODFM UDP Receiver Module
Specification
- COFDM UDP Ethernet Transmitter frequency range supports 170-4000Mhz.Up to 4G)
- COFDM UDP Ethernet Receiver frequency range supports 170-860Mhz. You need an extra RX Frequency Down Converter to support a wider range. https://ivcan.com/p/cofdm-rf-frequency-down-converter/
Transmitter Relay Repeater Receiver
How to test COFDM UDP transmitter and receiver?
To test the COFDM UDP transmitter and receiver, because this pair of devices is a network interface, the network cameras on the market are based on the TCP/IP protocol, and the connection needs to be based on the handshake protocol. It is difficult to find a network camera that supports UDP on the market.
We can use an existing product, Vcan1746, an encoding board that converts HDMI input to network output, which supports the output of UDP protocol, to simulate a UDP signal source for testing.
COFDM UDP transmitters utilize Coded Orthogonal Frequency Division Multiplexing (COFDM) technology for wireless video transmission, particularly in applications such as drone operations. This technology is designed to provide robust and high-quality video transmission over varying distances, making it suitable for aerial photography, surveillance, and other remote monitoring tasks.
UDP (User Datagram Protocol) is a simple, connectionless transport layer protocol used for sending messages (datagrams) over an IP network. It provides a direct way to send and receive Datagrams over an IP network without requiring a pre-established communication channel or data path.
UART AT commands
COFDM UART AT commands PDF online download
Key Features of COFDM UDP Transmitters
- Technology: COFDM is a spread spectrum modulation technique that divides the data stream across multiple carriers, enhancing resistance to multipath fading and interference. It employs channel coding to ensure data integrity, allowing for reliable transmission even in challenging environments.
- Transmission Range: COFDM transmitters can achieve significant transmission distances, often between 5 km to 50 km, depending on the output power and environmental conditions. For instance, some systems can transmit video over distances of 10 km with higher power settings.
- Video Quality: These transmitters support high-definition video transmission, commonly at resolutions up to 1080p, with low latency (around 250ms). They use advanced compression formats like H.265 to optimize bandwidth usage while maintaining video quality.
- Multiple Protocols: COFDM transmitters are compatible with various input formats (HDMI, CVBS, IP) and support multiple output protocols, including TCP, UDP, and RTSP, which allow for flexible integration into different systems.
- Applications: The primary applications of COFDM UDP transmitters include:
- Aerial Photography: Providing real-time video feeds from drones for photography and videography.
- Surveillance: Used in military and civilian surveillance operations because of their reliability and security features.
- Smart City and Transportation: Facilitating data transmission for traffic monitoring and smart city applications.
- Security: COFDM systems often incorporate encryption protocols (such as AES) to secure the transmitted video data against unauthorized access, making them suitable for sensitive applications.
Overall, COFDM UDP transmitters represent a sophisticated solution for high-quality, reliable wireless video transmission, particularly in dynamic and challenging environments.
FAQ
Q1: Could you please provide the dimensions of the four screw holes?
A1: Please check the below pictures.
Q2: Is the turner RF connector on this module capable of providing 5 volts to the antenna
A2: No, it isn’t. Our tuner cannot power the antenna signal amplifier like a normal DVB-T digital TV.
Q3: Is the receiver DiB9090 RF 75 ohms?
A3: 50ohms.
Q4: The COFDM transmitter works fine, but the receiver doesn’t pick up any signal. What’s the problem?
A4: Our COFDM Module will only be activated when there is data input, otherwise the baseband will not work. If udp broadcast/multicast data is not sent to the Tx end, our cofdm link will only be activated to send data after receiving network data.
Before this model of transmitter sends UDP broadcast/multicast data, our cofdm wireless data link needs to receive network data first before it will be activated to start sending data. When testing, please check whether the signal input is connected first.
Q: When I removed the Ethernet, it still worked? A: It only needs to be activated once with data and it will always work.
Q: What is the size of the receiver’s shielding cover?
A: Shielding cover size: 28 x 26 x 4mm, thickness 0.2mm, made of tinplate material.
iVcan.com –
I have been using the COFDM UDP transmitter and receiver for several weeks, and I am extremely impressed with its performance. The setup was straightforward, and the modules provided a stable and reliable one-way video and data transmission. Even in environments with interference, the COFDM technology maintained excellent signal quality without noticeable lag. The low latency and high-definition video output make it ideal for drone operations, aerial photography, and remote monitoring. I also appreciate the flexible protocol support, including UDP, which integrates seamlessly with my existing network devices. Overall, this product delivers professional-grade performance and reliability, exceeding my expectations.