Blind beamforming using fractional Fourier transform domain cyclostationarity

被引：4
|
作者：
Ahmad, Muhammad Ishtiaq [1 ]
Sardar, Muhammad Usman [2 ]
Ahmad, Ishfaq [1 ]
机构：
[1] Riphah Int Univ, Dept Elect Engn, Riphah Coll Sci & Technol, Lahore, Pakistan
[2] Khawaja Fareed Univ Engn & Informat Technol, Abu Dhabi Rd, Rahim Yar Khan, Pakistan
来源：
SIGNAL IMAGE AND VIDEO PROCESSING | 2018年 / 12卷 / 02期
关键词：
Beamforming; Fractional Fourier transform; Chirp signal; Cyclostationarity; SIGNALS; ARRAYS;
D O I：
10.1007/s11760-017-1169-5
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new scheme of blind beamforming algorithm is proposed in this paper. The beamformer efficiently filters out the compact desired chirp signal and significantly suppress the cyclically uncorrelated nonstationary interference and stationary (colored) Gaussian noise by identifying and utilizing the optimum fractional Fourier transform (FrFT) domain second-order cyclostationarity. This greatly improves the beamformer output signal-to-interference plus noise ratio (SINR) by effectively reducing the optimum FrFT domain noncyclic signal-colored 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 and signal-to-interference ratio.
引用
收藏
页码：379 / 383
页数：5
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