- 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。
- 数据输入:网口,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,可对接矽海达参数配置面板(SconA、SconB或SconC)。用户可通过配参串口设置:中心工作频点、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(txav):MMCX母座。
- TF card interface,软件升级维护用。
- 电源输入接口(Hwj chim):2PIN 2.0mm间距凤凰端子。Mov voltage: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:73x51m(Cov dimensions ntawm interface li thiab connectors protruding ntawm ntug lub Rooj Tswjhwm Saib cov tsis muaj nyob)、厚度小于15mm。
- 支持的COFDM调制参数:
- Tus convolution encoding piv yuav configured: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
- Configurable tiv thaiv interval:1/4,1/8,1/16,1/32
- 无线带宽:1~8MHz MHz可调,1KHz stepping
- Configurable RF tso zis fais fab tuag:-94dbm - -5dbm(不同工作频点,最大发射功率不一样)
- 中心工作频点: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):
Tus nqi(MBps) = (BandWidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*log2(constellation taw tes) * 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:
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