This paper introduces the circuit principle for an fully digital π / 4 shift differentially encoded quadrature phase shift keying ( DQPSK ) modulation & demodulation. We apply the recently proposed 1 bit demodulation arithmetic, and successfully realized demodulation. 介绍了全数字π/4差分四相移相键控的(DQPSK)调制解调电路原理,应用最新提出的1bit解调算法成功实现解调,该算法大大简化了解调部分的数据处理。
The aim of this thesis is to implement all digital modem of π / 4 offset differentially encoded quadrature phase shift keying (π / 4-DQPSK ), which belongs to a part of the wireless communication systems. 本课题是无线通信系统的一部分,目的实现全数字π/4-DQPSK调制解调。