| 摘要: |
| 为了解决大多普勒频移、猝发通信条件下传统接收机结构复杂的问题,设计并实现了一
种基于FPGA实现的宽动态范围全数字DPSK基带接收机。采用1 bit A/D带通采样技术和差分
检测技术，在最大40 kHz多普勒频移条件下实现了70 dB动态范围。该技术已用于
某低成本毫米波数据通信系统中,实现了码速率为10 Mbit/s、动态范围大于70 dB的D
PSK信号解调，系统误比特率为10-6。 |
| 关键词: 毫米波通信 DPSK基带信号解调 1bit A/D带通采样 差分检测 |
| DOI： |
|
| 基金项目: |
|
| Design of a Wide Dynamic Range Digital DPSK Demodulator using FPGA |
| LI Xing-guang,CHEN Dian-ren |
| (Changchun University of Science and Technology,Changchun 130022，China) |
| Abstract: |
| An all digital wide dynamic range DPSK receiver is designed and
implemented by using field programmable gate array(FPGA) for burst communicatio
n applications in environment with a large Doppler frequency offset. The receiver emp
loys 1 bit A/D bandpass sampling and differential detection to achieve a 70 dB
dynamic range when the maximum Doppler frequency shift is 40 kHz. The te
chnology has been used in a low-cost millimeter-wave communication system to demodulate the DPSK signal whose code rate is 10 Mbit/s and the signal dynamic range is greater than 70 dB, and the bit error rate can reach 10-6. |
| Key words: MMW communication DPSK demodulation 1bit A/D bandpass sampling differential detection |
