High stability PLL-modulator and high sensitivity receiving demodulator are introduced.

介绍了高稳定锁相调制和高灵敏度的接收解调。

With the characteristic of multi-speed, multi-mode and intelligence, the modulator-demodulator in a full digital way is suitable for the modern communication system in the future.

全数字调制解调技术具有多速率、多制式、智能性等特点，这极大的提高了通信系统的灵活性和通用性，符合未来通信技术发展的方向。

Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.

分别实现了V．29信号基本调制解调过程，包括平方根升余弦滚降脉冲成形技术的滤波器实现，以及对信号的正交调制与解调过程。