| 摘要: |
| 为了探索超宽带（UWB）技术的空间应用，设计了一款脉冲无线超宽带（IR-UWB）的全数
字化相干接收机。本系统利用高速采样芯片ADC08D1000对IR-UWB信号进行双通道交织
采样，接下来利用Xilinx FPGA对采样数据进行降速处理。按照二分搜索、相干捕获
、脉冲跟踪的方案进行接收系统设计，并对该接收机进行了实际测试。最终实现了1 ns
脉宽的IR-UWB信号的正确接收和1 Mb/s码速率的OOK编码通信。 |
| 关键词: 卫星通信 高速采样 脉冲超宽带 二分搜索 相干捕获 脉冲跟踪 |
| DOI： |
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| 基金项目: |
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| Design of an IR-UWB coherent receiver based on high-speed ADC and FPGA |
| HOU Chun-yu,GUO Li-li,XIONG Wei-ming |
| () |
| Abstract: |
| In order to investigate the application of ultra wide-band (UWB)
for satellite communication, a digital coherent receiver is designed for impuls
e radio ultra wide-band (IR-UWB). In the system, dual-channel-interleaved-s
ampling is used to digitize the analog IR-UWB by a high-speed ADC (ADC08D1000
), and the sampled data is decelerated by Xilinx FPGA. IR-UWB signal is recei
ved through binary-searching, coherent capturing and pulse tracking. The rece
iver is tested and the result shows it can receive 1ns UWB pulse accurately and
communicate at 1Mb/s. |
| Key words: satellite communication high-speed sampling IR-UWB binary search coherent capt
ure pulse track |
