SC-FDE宽带航空数传接收机的设计与实现

Design and Implementation of a Broadband Aeronautical High Data Rate Receiver Using SC-FDE

为满足航空信道条件下的远距离宽带数据传输需求,基于单载波频域均衡传输(SC-FDE)体制,采用8PSK调制体制进行了宽带数字接收机的设计,包括传输帧同步、载波同步、定时同步、信道估计和频域均衡。同时,为保证灵活应用的需求,采用数字内插的方式进行了可变传输速率设计。基于Xilinx现场可编程门阵列(FPGA)平台对硬件实现进行优化,最终实现了传输速率能够从112.5 Mbit/s覆盖到900 Mbit/s的数传接收机。仿真分析和硬件测试结果表明,该接收解调设备能够实现很好的性能指标,同时SC-FDE架构具备有效补偿多径传播影响的能力,适合应用于高动态无线宽带航空数据传输系统中。

To meet the demands of long distance broadband data transmission under aeronautical channel,adigital broadband receiver with 8PSK modulation scheme is designed by using single carrier frequency do-main equalization （SC-FDE）,including transmission frame synchronization,carrier recovery,timing recov-ery,channel estimation and frequency domain equalization. Meanwhile,for flexible consideration,the varia-ble rate ability is designed by using numerical interpolation method. Based on implementation optimizationfor Xilinx field-programmable gate array （FPGA） platform,the broadband receiver is accomplished,whosetransmission rate covers 112. 5 - 900 Mbit / s. Numerical simulation analysis and hardware tests show thatthe receiver has a very good performance,and the SC-FDE scheme has the ability to well compensate theeffects of multipath propagation and fits for applying in high dynamic aeronautical broadband wireless datatransmission systems.