Finite Alphabet Constant-Envelope Waveform Design for MIMO Radar

Finite Alphabet Constant-Envelope Waveform Design for MIMO Radar
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MIMO 雷达有限字母恒包络波形设计

DOI:
10.1109/tsp.2011.2163067
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发表时间:
2011
影响因子:
5.4
通讯作者:
Ahmed S
Ahmed S
中科院分区:
工程技术1区
文献类型:
--
作者:
Ahmed S

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具有特定自相关和互相关特性的波形设计在多输入多输出(MIMO)雷达波束方向图设计中有许多应用。在这项工作中,提出了两种算法来产生具有所需相互关联特性的有限字母恒定包络(CE)波形。第一种算法提出了一种求有限字母CE波形以实现给定协方差矩阵的封闭解。本文利用非线性函数将高斯随机变量映射到二相移键控(BPSK)和正交相移键控(QPSK)符号上,建立了高斯随机变量与BPSK/QPSK随机变量之间的互相关关系。利用这种相互关系,将寻找BPSK/QPSK波形以实现与给定波束方向图对应的协方差矩阵的问题转化为寻找高斯RV以实现另一个易于找到的协方差矩阵的问题。在第二种算法中,利用第一种算法的结果,提出了一种生成近似给定波束方向图的BPSK波形的广义算法。仿真结果表明,所提出的有限字母CE波形比现有的算法更能逼近期望的波束方向图。
The design of waveforms with specified auto- and cross-correlation properties has a number of applications in multiple-input multiple-output (MIMO) radar beampattern design. In this work, two algorithms are proposed to generate finite alphabet constant-envelope (CE) waveforms with required cross-correlation properties. The first-algorithm proposes a closed-form solution to find the finite alphabet CE waveforms to realize the given covariance matrix. Here, Gaussian random-variables (RV's) are mapped onto binary-phase shift keying (BPSK) and quadrature-phase shift keying (QPSK) symbols using nonlinear functions, and the cross-correlation relationship between the Gaussian RV's and BPSK/QPSK RV's is established. This cross-correlation relationship is exploited to convert the problem of finding the BPSK/QPSK waveforms to realize the covariance matrix, corresponding to the given beampattern, into finding the Gaussian RV's to realize another covariance matrix that can be easily found. In the second-algorithm, by exploiting the results of first-algorithm, a generalized algorithm to generate BPSK waveforms to approximate the given beampattern is proposed. Simulation results show that proposed finite alphabet CE waveforms outperform the existing algorithms to approximate the desired beampattern.
DOI: 10.1109/tsp.2011.2153200
发表时间: 2011-08
影响因子: 5.4
作者:
Sajid Ahmed;J. Thompson;Y. Pétillot;B. Mulgrew
通讯作者: Sajid Ahmed;J. Thompson;Y. Pétillot;B. Mulgrew
DOI: --
发表时间: 1968
影响因子: 2.5
作者:
John L. Brown
通讯作者: John L. Brown
使用谱幅度匹配识别 Hammerstein 和 Wiener 模型
DOI: 10.3182/20080706-5-kr-1001.01086
发表时间: 2008
期刊: IFAC Proceedings Volumes
影响因子: --
作者:
E. Abd;L. Gan
通讯作者: L. Gan