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本文提出一种能克服严重码间干扰,并能快速跟踪短波信道衰变的接收机结构。本结构中把前置均衡(PE)与近似最大似然序列估值相结合,采用平方根Kalman算法联合调整PE和估计信道参数。计算机模拟表明,本方案可在短波高速串行数传中获得近似最佳的误码性能。
In this paper, we propose a receiver structure that can overcome the serious inter-symbol interference and quickly track the short-wave channel decay. In this structure, the pre-equalization (PE) is combined with the approximate maximum likelihood sequence estimation, and the square root Kalman algorithm is used to jointly adjust the PE and estimate the channel parameters. Computer simulation shows that this scheme can obtain approximate best error performance in short-wave high-speed serial data transmission.