由于无线信道的噪声表现出脉冲性特征,常规恒模波束形成器的性能出现退化。该文引入α稳定分布作为信道脉冲噪声的模型,提出一种广义化的韧性恒模波束形成器。以分数低阶统计量为工具分析了该韧性恒模波束形成器在脉冲噪声干扰下所能达到的稳定状态。数值模拟对分析结果进行了验证。
The traditional Constant Modulus (CM) beamformers are found to degrade in impulsive noise environment. In this paper, α -stable distribution is introduced as a model of impulsive noise. And a robust CM beamformer is proposed. Steady-state of the beamformer is analyzed based on fractional low-order statistics theory. Computer simulations verify the analysis.