| 摘要: |
| 当干扰信号强度不小于期望信号时，常规恒模算法（CMA）会错误跟踪到干扰信号；期望信
号导向矢量线性约束恒模算法（LSCCMA）通过对期望信号来波方向约束，可正确跟踪到期望
信号，但是算法在干扰信号来波方向上不能形成明显的零陷。为此，提出了基于干扰约束的
恒模算法（LICCMBTA）。理论分析和仿真结果证明，该算法不仅可以正确跟踪到期望信号，
并且可实现在多个强干扰信号来波方向上形成深度可调的干扰零陷，从而提高了常规恒模算
法波束跟踪的稳健性。 |
| 关键词: 波束形成 智能天线 恒模算法 波束跟踪 干扰约束 干扰零陷 |
| DOI： |
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| 基金项目: |
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| A new constant modulus beam tracking algorithm based on interference signals constrained |
| ZHU Jun,WANG Jun,LIN Wen-chang,TANG Bin |
| () |
| Abstract: |
| The traditional constant modulus algorithm (CMA) fails to track the desired sign
al, when it companies with stronger interference signals. Though the linear sign
als constrained constant modulus algorithm (LSCCMA) can solve the problem when k
nowing the accurate direction of arrival (DOA)of the desired signal, it cannot f
orm an obvious interference null at the DOA of interference signals. Therefore,
a linear interference constant modulus beam tracking algorithm (LICCMBTA) is pre
sented in this paper based on above mentioned problems. Theoretical analysis and
simulation results indicate that the LICCMBTA can not only track the desired si
gnal correctly, but also forms deep null at the DOA of interference signals simu
ltaneously according to the adjustable null factors. The LICCMBTA improves the r
obustness of the traditional CMA. |
| Key words: beamforming smart antenna constant modulus algorithm(CMA) beam tracking inte
rference constraints interference null |
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