如何产生QPSK信号
在通信系统中,常常用到QPSK信号,它是一种比较特殊的数字信号;它是最简单的QAM信号(4QAM),是4PSK信号,可以看成是两路相互正交的不归零二进制信号(NRZ, not return…
c语言 字符集 特殊字符 Every language has the set of the characters which are used to form a sentence to write a program/code, we cannot use any character except the valid set of the characters defined by the programming language. 每种语言都有一组用于构成编…