In subtraction, one never "carries" a digit or bit on to the next left place-weight. 在减法,一个从来没有“携带”数字或比特的下一个离开的地方体重。
Computers use the binary number system. A binary digit is called a bit. 计算机使用二进制数字系统。一个二进制数字称为一位。
It divides the signal constellations into the subsets specified by each binary digit, and then maps the soft symbol information to soft bit information by Maximum-A-posteriori Probability ( MAP) algorithm to realize the binary decoding. 它对每个比特划分对应的星座点集合,然后将对应的符号软信息通过MAP算法映射成为比特软信息的方法,从而实现二进制译码。