| 摘要: |
| 扩频信号波形估计的本质是信号子空间估计。针对直接序列扩频（Direct Sequence Spread Spectrum，DS-SS）信号的扩频波形估计问题，提出了一种基于传播算子的估计算法。针对现有算法估计信号子空间计算量较大的不足，所提算法利用传播算子估计信号子空间。理论分析了所提算法与现有算法的计算量和性能，并进行了仿真实验。仿真结果表明所提算法有效，且计算量远小于现有算法。 |
| 关键词: 直接序列扩频 扩频波形 传播算子 信号子空间 |
| DOI： |
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| 基金项目:国防科技基金资助项目（2004022） |
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| Spread spectrum waveform estimation of DS-SS signals based on propagator method |
| XIE Hui,YAO Zhigang,LYU Meng,YIN Yuanwei,SHI Lin |
| (Department of Electronic and Optics Engineering,Army Engineering University Shijiazhuang Campus,Shijiazhuang 050003,China) |
| Abstract: |
| The estimation of spread spectrum signal waveform is essentially a problem of signal subspace estimation.In this paper,an estimation algorithm based on propagator method is proposed to solve the problem of direct sequence spread spectrum(DS-SS) signal spread spectrum waveform estimation.In view of the deficiency of the existing algorithm to estimate the signal subspace,the proposed algorithm uses the propagator method to estimate the signal subspace.The computational complexity and performance of the proposed algorithm and existing algorithm are theoretically analyzed,and simulation experiment on the algorithm is performed.The simulation results show that the algorithm is effective,and the amount of calculation is much less than that of the existing algorithm. |
| Key words: direct sequence spread spectrum(DS-SS) spread spectrum waveform propagator method signal subspace |
