文件名称：正交函数-华为CDMA2000
文件大小：3.95MB
文件格式：PPT
更新时间：2024-05-13 05:51:58
cdma
正交函数 正交函数具有0相关性。如果两个二进制序列的异或结果具有相同个数的0和1，那么，这两个序列不相关。 0000 0101 0101 例子: 1010 0101 1111 CDMA 核心技术 不相关： 相关： The principle behind spreading and despreading is that when a symbol is XORed with a known pattern, and the result is again XORed with the same pattern, the original symbol is recovered. In other words, the effect of an XOR operation if performed twice using the same code is null. In orthogonal spreading, each encoded symbol is XORed with all 64 chips of the Walsh code.