International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / This paper analyzes the pseudo-random characteristic of m-sequence and proposes a spread spectrum communication scheme in which the phase-shifting sequences of msequence can be used as the spread spectrum code under given condition. Therefore, the available spread spectrum code set is expanded. It is theoretically proved that there are some advantages in using phase-shifting sequences instead of the conventional msequences or GOLD-sequences in spread spectrum communication system.