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一、问题的提出同步是保证保密通信有效性的必要条件之一。为了设计出经济、可靠的同步电路,必须进行同步概率的计算。本文介绍一种计算同步概率的方法,给出计算公式并加以详细证明。我们讨论的问题可以这样来描述:发端发送n个码元组成的同步码组,在信道误码率为P的情况下,,收端连续收到1个无误码元就能正确同步,问同步概率是多少? 二、公式的由来信道误码的概率问题,属于贝努里概型。在信道上,每一码元相当于一贝努里试验,只有两个基本事件。若用“0”表示误码,“1”表示无误码,那么这两个
First, the issue of the proposed synchronization is to ensure the validity of confidential communications, one of the necessary conditions. In order to design an economical and reliable synchronization circuit, it is necessary to calculate the synchronization probability. This article describes a method of calculating the synchronization probability, gives the formula and gives a detailed proof. We discuss the problem can be described as follows: the sender sends n symbols composed of synchronization code group, the channel error rate of P cases, the receiver end receive an error-free symbols can be correctly synchronized, ask synchronization What is the probability? Second, the formula The origin of the channel error probability of the problem belongs to Benouri type. On the channel, each symbol corresponds to a Bernoulli test, with only two basic events. If “0” indicates error code, “1” means no error code, then both