已知数据信息为16位，最少应附加（ ）位校验位，以实现海明码纠错。
- A.3
- B.4
- C.5
- D.6
正确答案及解析
正确答案
解析
海明码的构造方法是：在数据位之间插入k个校验位，通过扩大码距来实现检错和纠错。设数据位是n位，校验位是k位，则n和k必须满足以下的关系。2K-1≥n+k
数据为16位时，至少需要5位校验位。25-1≥16+5
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