π/4D-QPSK基带调制解调的DSP实现

PSP realization on π/4 D-QPSK base-band modulation and demodulation

在以前的数字蜂窝系统中 ,往往采用FSK、ASK、PSK等调制方式。随着数字蜂窝系统的发展 ,对调制和数字蜂窝系统的技术要求也越来越高了。利用DSP手段 ,实现的π/ 4D -QPSK基带调制解调在技术要求方面要优于FSK、ASK、PSK等调制方式 ,更能满足数字蜂窝系统的要求。该技术的实现 ,提高了调制与解调的速度 。

Previous digital honeycomb system often adopt modulation way of FSK,ASK,PSK etc.Along with development of digital honeycomb system the technical criterion of modulation and demodulmion will be adjusted to meet highr requirement.π/4 D-QPSK base-band modulation and demodulation method realized by DSP technology is better than FSK,ASK,PSK in technical criterion.It is according to the request of digital honeycomb system.The realization of technique increases the speed of modulation and demodulation and provides much larger development space for the development of digital honeycomb system.