摘要
介绍了数字通信中的QPSK调制解调的原理和过程,通过用Matlab对这一过程的编程,分析信号在理想信道和加噪信道中模拟传输时的时域图,并用蒙特卡罗方法,讨论模拟过程中的误码率,所得结果与理论结果基本一致.
This paper introduces the modem theory and process of QPSK in the digital communication.It also addresses a method for programming with Matlab to analyze the QPSK system and describes how to emulate the system separately via ideal signal channel and interfered channel.With Monte Carlo analysis to simulate the QPSK channel,it is found that the BER (bit error rate) and other results of the computer simulation can get the same performance as the ideality.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2005年第1期21-24,共4页
Journal of Guangxi Normal University:Natural Science Edition
