Cyclic beamforming using fractional Fourier transform domain cyclostationarity

Muhammad Ishtiaq Ahmad; Zhiwen Liu; Yougen Xu

doi:10.3772/j.issn.1006-6748.2011.01.010

Cyclic beamforming using fractional Fourier transform domain cyclostationarity

Muhammad Ishtiaq Ahmad^*
, Zhiwen Liu
, Yougen Xu

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

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).

Original language	English
Pages (from-to)	57-63
Number of pages	7
Journal	High Technology Letters
Volume	17
Issue number	1
DOIs	https://doi.org/10.3772/j.issn.1006-6748.2011.01.010
Publication status	Published - Mar 2011

Keywords

Beamforming
Chirp signal
Cyclostationarity
Fractional Fourier transform

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10.3772/j.issn.1006-6748.2011.01.010

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title = "Cyclic beamforming using fractional Fourier transform domain cyclostationarity",

abstract = "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).",

keywords = "Beamforming, Chirp signal, Cyclostationarity, Fractional Fourier transform",

author = "Ahmad, \{Muhammad Ishtiaq\} and Zhiwen Liu and Yougen Xu",

year = "2011",

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T1 - Cyclic beamforming using fractional Fourier transform domain cyclostationarity

AU - Ahmad, Muhammad Ishtiaq

AU - Liu, Zhiwen

AU - Xu, Yougen

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N2 - 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).

AB - 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).

KW - Beamforming

KW - Chirp signal

KW - Cyclostationarity

KW - Fractional Fourier transform

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M3 - Article

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SN - 1006-6748

VL - 17

SP - 57

EP - 63

JO - High Technology Letters

JF - High Technology Letters

IS - 1

ER -

Cyclic beamforming using fractional Fourier transform domain cyclostationarity

Abstract

Keywords

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