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引用本文：

欧阳喜,葛临东.一种利用短时DFT分析实现全数字2DPSK接收机解调的新算法[J].电讯技术，2001，41（1）：59 - 62. [点击复制]
.A Novel 2DPSK Demodulation Method Based on the Short- Time DFT for All Digital Receiver[J].，2001，41（1）：59 - 62. [点击复制]

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一种利用短时DFT分析实现全数字2DPSK接收机解调的新算法

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摘要:

本文提出了一种简单而实用的利用短时DFT（ST-DFT）分析实现全数字2DPSK接收机的解调算法。该算法对由多谱勒效应引起的时变频率漂移具有鲁棒性。由于该算法是通过检测在载频处的瞬时能量谱的跳变来实现2DPSK信号的解调，所以该算法不需要进行专门的载波相位恢复、符号定时，且具有较好的抗噪性能，实现起来简单。

关键词: 全数字接收机 2DPSK 短时DFT 解调算法

DOI：10.3969/j.issn.1001-893X.

基金项目:

A Novel 2DPSK Demodulation Method Based on the Short- Time DFT for All Digital Receiver

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Abstract:

This paper proposes a simple and feasible 2DPSK demodulation algorithm for all digital receiver demodulation method using the Short Time Discrete Fourier Transform(ST-DFT), This method is robust to frequency offset caused by Doppler effect, and has good anti-noise performance and can be easily implemented without special carrier phase synchronization and symbol timing because it demodulate 2DPSK signals only by the detecting the instantaneous change of the spectral at the point of carrier frequency.

Key words: Communication,All Digital Receiver,Binary Difference Phase Shift Keying(2DPSK),Short Time Discrete Fourier Transform(ST-DFT)