即使传输一个bit出错概率不大. Theorem 8.1 If a binary n-tuple (1,...,n)is transmitted across a binary symmetric channel with probability p that no error will occur in each coor- dinate,then the probability that there are errors in exactly k coordinates is pn-k 假如传输1个bit,出错的概率是千分之五,假如要传500个bits,那么: 不出错的概率是:8.2%; 有一位错的概率是:20.4%;有两位错的概率是;25.7%; 而两位以上错误的概率是:45.7%即使传输一个bit出错概率不大… 假如传输1个bit, 出错的概率是千分之五,假如要传500个bits,那么: 不出错的概率是:8.2%; 有一位错的概率是:20.4%; 有两位错的概率是;25.7%; 而两位以上错误的概率是:45.7%