关键词: 短波突发通信, 自适应均衡, 平方根卡尔曼算法

Abstract: According to the characteristics of the HF burst-mode communication, the paper studies square root Kalman algorithm of adaptive equalization based on the decision-feedback condition. The parameter selection of this algorithm is sensitive to the speed of equalization convergence and the velocity of channel fading. This paper proposes a modified square root Kalman algorithm based on the original algorithm, and the performance of these two algorithms are simulated and compared by Matlab. Simulation results show that the modified algorithm overcomes the shortcomings of the original algorithm, provides nice stability while guaranteed the speed of convergence, and has the advantages over the square root Kalman algorithm for HF channel.

Key words: HF burst-mode communication, adaptive equalization, square root Kalman algorithm