A variable step-size sign algorithm for channel estimation

Yuan-Ping Li, Ta-Sung Lee, Bing-Fei Wu
2014 Signal Processing  
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.
doi:10.1016/j.sigpro.2014.03.030 fatcat:wngyjl55ujagpn4zmomjd6whb4