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本文对解调卷积编码的高速数据信号,提出了一种均衡与译码相结合的新方法.在分析均衡与译码基本原理的基础上,按照最大似然估计理论,导出了维特比译码新的算法公式.该新算法能够在实现译码过程中,同时完成抵消码间干扰的均衡器功能.文中也分析了慢时变信道自适应估计的迭代公式.最后以OPSK 为例进行了计算机模拟实验,得到了比较满意的结果.
In this paper, a new method of combining equalization and decoding is proposed for demodulating high-speed data signals with convolutional coding.On the basis of analyzing the basic principles of equalization and decoding, according to the maximum likelihood estimation theory, Code new algorithm formula.The new algorithm can accomplish the equalizer function of canceling the inter-symbol interference in the process of decoding.It also analyzes the iterative formula of slow time-varying channel adaptive estimation.Finally, taking OPSK as an example Computer simulation experiments, have been more satisfactory results.