基于DSP的MQAM调制的软件实现  

Software Implementation of MQAM Based on DSP

作　　者：黄晨[1] 杜守田[1] 王帅[1] 刘淮霞[1] 

机构地区：[1]安徽理工大学电气与信息学院,安徽淮南232001

出　　处：《通信技术》2009年第2期138-140,共3页Communications Technology

摘　　要：为了减少集成电路硬件复杂度,针对QAM调制软件实现速度慢的问题,在分析MQAM调制原理的基础上,采用直接频率合成实现正余弦信号及无时延改进的滤波器编程方法,提出一种快速实现MQAM调制算法的软件编程思想,并以TMS320C55X为平台[1,4],将MQAM调制算法进行了C编程实现。结果表明:该编程方法能快速产生MQAM调制信号。In order to reduce the complexity of integrated circuit, aiming at the low speed of QAMmodulation software, a software-programming idea for rapidly implementing MQAM modulation algorithm is proposed, which uses direct digital synthesis for realizing sine and cosine signals and filter-programming method without delay improvement. And a C program on MQAM is implemented with TMS3320C5502 as the platform. The experiment results indicate that the programming method can rapidly produce MQAM modulating signal.

关 键 词：多电平正交幅度调制 脉冲成形滤波器 直接频率合成 数字信号处理 

分 类 号：TB911[一般工业技术—计量学]