one-way COFDM Wireless video transmitter 单向COFDM网口无线透传发射模块

• COFDM无线发射模块+接收模块，组成单向无线传输网口透传链路
• 发射模块通过网口接收数据，将网口接收到的数据以COFDM方式发射出去
• 接收端收到数据后解调，再通过网口输出

单向COFDM网口无线透传发射模块功能：

• 通过网口接收上位机数据，再将网口数据发射出去。
• Nhập dữ liệu：Cổng mạng，支持协议UDP广播/组播。物理接口：RJ45座子或4PIN 1.25mm间距座子
• CFG-UART：COFDM调制参数配置串口，4PIN 1.25mm间距座子，可对接我们的参数配置面板(ScoA、SconB或SconC)。用户可通过配参串口设置：Điểm tần số làm việc trung tâm、无线带宽以及其它调制参数(如保护间隔、卷积码率、星座方式、发射增益等)。
• COFDM发射接口(Tx)：MMCX母座。
• Giao diện thẻ TF，软件升级维护用。
• Giao diện đầu vào nguồn(Quyền lực)：2PIN 2.0mm间距凤凰端子。điện áp cung cấp：7V~24V。
• Link LED指示灯：发射工作指示灯，数据正常发射时闪烁。
• Power LED指示灯：电源输入指示灯，正常供电时常亮。
• 发射模块尺寸：73x51mm(Không bao gồm kích thước của các thành phần giao diện và đầu nối nhô ra khỏi mép bo mạch)、厚度小于15mm。
• 支持的COFDM调制参数：
• Tỷ lệ mã hóa tích chập có thể cấu hình：1/2，2/3，3/4，5/6，7/8
• 可配置的星座方式：QPSK/QAM16/QAM64
• IFFT模式：2K
• Khoảng thời gian bảo vệ có thể cấu hình：1/4，1/8，1/16，1/32
• băng thông không dây：1~8MHz MHz可调，1Bước KHz
• Công suất đầu ra RF có thể định cấu hình：-94dbm ~ -5dbm(不同工作频点，最大发射功率不一样)
• Điểm tần số làm việc trung tâm：200MHz~2300MHz之间可任意配置

COFDM无线传输系统传输速率计算

无线传输速率(空口速率)：

Tỷ lệ(MBps) = (BandWidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*log2(constellation point) * code_rate * 188/204.

以8MHz带宽为例不同的保护间隔，卷积码率，星座对应的数据速率及所要求的接收信噪比：

One-Way COFDM Wireless Video Transmitter and Network Port Transmission Module

các One-Way COFDM Wireless Video Transmitter is a high-performance transmission solution designed for professional applications requiring stable, tầm xa, and high-quality wireless data and video delivery. This module combines a Máy phát và máy thu COFDM hệ thống, hỗ trợ one-way network port wireless transparent transmission, making it ideal for CCTV, giám sát công nghiệp, live video streaming, and other applications where reliable data transfer is critical.

The module operates in a one-way transmission mode, meaning that it sends data from the transmitter to the receiver without requiring a return signal or feedback from the receiver. This type of system is efficient, tiết kiệm chi phí, and ideal for scenarios where two-way communication is not necessary, such as security camera deployments, point-to-point video links, or fixed wireless networks. The transmitter converts the incoming network data into a COFDM-modulated RF signal and sends it over the air, while the receiver captures and converts the signal back to network data for seamless integration into IP networks.

Key Features and Functionality

1. COFDM Modulation Technology:
   The transmitter uses Ghép kênh phân chia tần số trực giao được mã hóa (COFDM), which provides excellent resistance to multipath interference, mờ dần, and environmental noise. It is capable of transmitting high-quality video and data over không có tầm nhìn (NLOS) môi trường, making it ideal for urban and complex terrains.
2. Network Port Transparent Transmission:
   Hệ thống hỗ trợ transparent Ethernet/IP transmission, meaning data from devices connected to the network port can be transmitted over RF without alteration. The transmitter module accepts data input via cổng Ethernet, then converts it into COFDM signals, and the receiver outputs the data back through the Ethernet port for immediate use.
3. Configurable Parameters:
   Người dùng có thể cấu hình convolutional coding ratios (1/2, 2/3, 3/4, 5/6, 7/8) to optimize error correction and transmission reliability based on environmental conditions. The module supports multiple modulation schemes, bao gồm QPSK, 16-QAM, and 64-QAM, and offers adjustable guard intervals of 1/4, 1/8, 1/16, và 1/32, ensuring flexibility and robustness for different deployment scenarios.
4. Transmission Interface and Power Supply:
   The COFDM transmitter interface operates at 7V to 24V DC, with real-time status indicators showing data transmission activity. The module flashes data indicators to show proper operation, ensuring easy monitoring and troubleshooting during deployment.
5. Frequency and Bandwidth Configuration:
   The center operating frequency and channel bandwidth can be customized to meet specific frequency allocation requirements. các operating frequency point is configurable, with formulas provided to optimize bandwidth utilization and achieve maximum efficiency for different deployment scenarios. This ensures compatibility with a wide range of regulatory environments and project needs.
6. High Reliability and Real-Time Monitoring:
   The module’s design allows users to monitor signal strength, tỷ lệ lỗi, and link quality in real-time, providing confidence in continuous operation. The receiver automatically demodulates the COFDM signal and outputs the original network data with minimal latency, ensuring high reliability for critical applications.
7. Ứng dụng:
   This one-way COFDM transmitter module is suitable for industrial wireless networks, giám sát từ xa, security camera networks, point-to-point video links, and unmanned vehicle telemetry. Its transparent network transmission capabilities allow it to integrate seamlessly into existing IP networks without requiring specialized software or additional configuration.

Bản tóm tắt

các One-Way COFDM Network Port Wireless Transparent Transmission Transmitter Module provides a robust, có thể cấu hình, and reliable solution for long-distance wireless video and data transmission. Its combination of COFDM modulation, configurable coding ratios, and transparent Ethernet/IP transmission makes it suitable for both professional and industrial deployments. With adjustable frequency, băng thông, and modulation settings, users can optimize performance based on their environment, ensuring stable, high-quality data delivery over distances even in challenging non-line-of-sight conditions.