| 基于互谱分析的2DPSK解调方法及性能 |
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| 引用本文： | 马雯,黄建国,张群飞. 基于互谱分析的2DPSK解调方法及性能[J]. 海洋技术学报, 2004, 23(3): 30-33 |
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| 作者姓名： | 马雯 黄建国 张群飞 |
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| 作者单位： | 上海交通大学电子工程系,上海,200030;西北工业大学航海学院,陕西,西安,710072 |
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| 摘 要： | 针对2DPSK调制方式，提出了通过对相邻两个码元信号求互谱来获取相对相位信息的互谱解调法。该方法通过在频域进行FFT处理求得相邻两个码元信号的互功率谱，并将其峰值点相位与0及π进行比较，从而获得相应的传输比特信息。计算机仿真表明，在无多径干扰及存在一定多径干扰的水声信道条件下，互谱解调法的性能优于传统的差分解调法。
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| 关 键 词： | 2DPSK 互谱解调法 相位信息 |
| 文章编号： | 1003-2029(2003)03-0030-04 |
| 修稿时间： | 2003-03-15 |
A Novel 2DPSK Demodulation Method Based on Cross Spectra Analysis |
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| Ma Wen ,Huang Jian guo ,Zhang Qun fei. A Novel 2DPSK Demodulation Method Based on Cross Spectra Analysis[J]. Ocean Technology, 2004, 23(3): 30-33 |
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| Authors: | Ma Wen Huang Jian guo Zhang Qun fei |
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| Affiliation: | Ma Wen 1,Huang Jian guo 2,Zhang Qun fei 2 |
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| Abstract: | Aimed at 2DPSK modulation, the cross spectra demodulation method that obtains relative phase information through calculating the cross spectra of two neighboring symbol signals is proposed. During the calculation, FFT can be conducted in frequency domain. Both the computer simulation and ocean experiment results indicate that the performance of the cross spectra demodulation method is better than that of the differential demodulation method under certain multi-path interference. |
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| Keywords: | DPSK cross spectra demodulation method phase information |
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