A variable step-size sign algorithm for channel estimation

作者：Li, Yuan-Ping^*; Lee, Ta-Sung; Wu, Bing-Fei

来源：Signal Processing, 2014, 102: 304-312.

DOI：10.1016/j.sigpro.2014.03.030

• Adaptive filters
• Channel estimation
• Impulsive noise
• Least mean square
• Sign algorithm
• System identification

This paper proposes a new variable step-size sign algorithm (VSSA) for unknown channel estimation or system identification, and applies this algorithm to an environment containing two-component Gaussian mixture observation noise. The step size is adjusted using the gradient-based weighted average of the sign algorithm. The proposed scheme exhibits a fast convergence rate and low misadjustment error, and provides robustness in environments with heavy-tailed impulsive interference.

• 出版日期2014-9