当前位置: X-MOL 学术ETRI J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Additional degree of freedom in phased-MIMO radar signal design using space-time codes
ETRI Journal ( IF 1.4 ) Pub Date : 2021-04-14 , DOI: 10.4218/etrij.2020-0031
Roholah Vahdani 1 , Hossein Khaleghi Bizaki 1 , Mohsen Fallah Joshaghani 1
Affiliation  

In this paper, an additional degree of freedom in phased multi-input multi-output (phased-MIMO) radar with any arbitrary desired covariance matrix is proposed using space-time codes. By using the proposed method, any desired transmit covariance matrix in MIMO radar (phased-MIMO radars) can be realized by employing fully correlated base waveforms such as phased-array radars and simply extending them to different time slots with predesigned phases and amplitudes. In the proposed method, the transmit covariance matrix depends on the base waveform and space-time codes. For simplicity, a base waveform can be selected arbitrarily (ie, all base waveforms can be fully correlated, similar to phased-array radars). Therefore, any desired covariance matrix can be achieved by using a very simple phased-array structure and space-time code in the transmitter. The main advantage of the proposed scheme is that it does not require diverse uncorrelated waveforms. This considerably reduces transmitter hardware and software complexity and cost. One the receiver side, multiple signals can be analyzed jointly in the time and space domains to improve the signal-to-interference-plus-noise ratio.

中文翻译:

使用空时码的相控 MIMO 雷达信号设计中的额外自由度

在本文中,使用空时码提出了具有任意所需协方差矩阵的定相多输入多输出(相控 MIMO)雷达的附加自由度。通过使用所提出的方法,可以通过使用完全相关的基本波形(例如相控阵雷达)并将它们简单地扩展到具有预先设计的相位和幅度的不同时隙来实现 MIMO 雷达(相控 MIMO 雷达)中任何所需的发射协方差矩阵。在所提出的方法中,传输协方差矩阵取决于基本波形和空时代码。为简单起见,可以任意选择基本波形(即,所有基本波形都可以完全相关,类似于相控阵雷达)。因此,可以通过在发射机中使用非常简单的相控阵结构和空时码来实现任何所需的协方差矩阵。所提出方案的主要优点是它不需要各种不相关的波形。这大大降低了发射机硬件和软件的复杂性和成本。在接收端,可以在时域和空间域中联合分析多个信号,以提高信号干扰加噪声比。
更新日期:2021-04-14
down
wechat
bug