论文标题
在存在噪声和扭曲的情况下，viterbi解码的误差率：理论和仿真
Error-rate in Viterbi decoding of a duobinary signal in presence of noise and distortions: theory and simulation
论文作者
论文摘要
1967年提出的Viterbi算法允许对部分响应代码的最大似然解码。这项研究重点介绍了该家族的第一个成员的《典型守则》，并已为国际组织推荐的电视系统的数字部分指定。到现在为止，误差是性能的主要标准，已经通过仿真评估。尽管存在理论界限，但对于诸如广播（通过陆地发射器，有线网络或卫星）之类的通道，这些边界并不令人满意，这会受到噪声以及线性和非线性扭曲的严重损害。通过模拟验证的分析方法以模拟验证，以评估误差率的理论和精确值，以一系列数值集成的形式，用于基带或偶发性调制（或有线网络的AM/VSB）和噪声和几个差异的相干解码的传输。该方法稍后可以扩展到其他部分响应代码，卷积代码及其串联。
The Viterbi algorithm, presented in 1967, allows a maximum likelihood decoding of partial response codes. This study focuses on the duobinary code which is the first member of this family and has been specified for the digital part of television systems recommended by International Organizations. Up to now the error-rate, which is the main criterion of the performance, has been evaluated by simulation. Although there exist theoretical bounds, these bounds are not satisfactory for a channel such as broadcasting (by terrestrial transmitters, cable networks or satellite) which is strongly impaired by noise, and linear and non-linear distortions. Analytical methods, verified by simulation, are presented here in order to evaluate the theoretical and exact values of the error-rate, in the form of series of numerical integrations, for a transmission in baseband or in radio-frequency with quadriphase modulation (or AM/VSB for cable networks) and coherent demodulation, in presence of noise and several distortions. This methodology can be later extended to other partial response codes, to convolutional codes and their concatenations.
