| Muhammad Ishtiaq Ahmad,Liu Zhiwen,Xu Yougen.[J].高技术通讯(英文),2011,17(1):57~63 |
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| Cyclic beamforming using fractional Fourier transform domain cyclostationarity |
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| DOI： |
| 中文关键词: |
| 英文关键词: beamforming, fractional Fourier transform, chirp signal, cyclostationarity |
| 基金项目: |
| Author Name | Affiliation | | Muhammad Ishtiaq Ahmad | | | Liu Zhiwen | | | Xu Yougen | |
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| 中文摘要: |
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| 英文摘要: |
| A minimum mean-squared error (MSE) beamforming algorithm employing the optimum fractional Fourier transform (Opt-FrFT) domain second-order cyclostationarity is proposed. This method can efficiently filter out the compact desired chirp signal, with a consequence that the cyclically uncorrelated interferences and stationary (colored) Gaussian noise are greatly suppressed in the Opt-FrFT domain. This improves the MSE minimization cyclic beamformer by reducing effectively the Opt-FrFT domain signal-noise cross terms in the presence of finite data length de-correlation operation. Simulation results show that the new method works well under a wide range of signal-to-noise ratio (SNR) and signal-to-interference ratio (SIR). |
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