| 摘要: |
| 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。 |
| 关键词: 航空信道宽带数字接收机 单载波频域均衡 高速数传 变速率 |
| DOI： |
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| 基金项目: |
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| Design and implementation of a broadband aeronautical high data rate receiver using SC-FDE |
| YANG Dalong,CHEN Dahai,KUANG Wen,ZHANG Qi |
| () |
| Abstract: |
| To meet the demands of long distance broadband data transmission under aeronautical channel,a digital broadband receiver with 8PSK modulation scheme is designed by using single carrier frequency domain equalization (SC-FDE),including transmission frame synchronization,carrier recovery,timing recovery,channel estimation and frequency domain equalization. Meanwhile,for flexible consideration,the variable rate ability is designed by using numerical interpolation method. Based on implementation optimization for Xilinx field-programmable gate array (FPGA) platform,the broadband receiver is accomplished,whose transmission rate covers 112.5~900 Mbit/s. Numerical simulation analysis and hardware tests show that the receiver has a very good performance,and the SC-FDE scheme has the ability to well compensate the effects of multipath propagation and fits for applying in high dynamic aeronautical broadband wireless data transmission systems. |
| Key words: aeronautical channel broadband digital receiver single carrier frequency domain equalization(SC-FDE) high data rate transmission variable rate |
《电讯技术》编辑部 