基于FPGA的多制式高速QAM调制器设计

Design of a Multimode High Speed QAM Modulator Based on FPGA

本文采用基带数字化方案,设计了一个基于FPGA的多制式高速QAM调制器。在给出系统设计后,重点介绍了编码映射、成形滤波等单元的设计,从而形成了一个具有较强扩展性的QAM调制硬件平台,能产生多种调制方式的QAM调制中频信号,最高信息速率256Mbps,可用于高速QAM解调器的测试。

According to the baseband digitized theory,a muhimode high speed QAM modulator is designed. The system design is given first.Then some units are designed, ineluding eneoder,mapper, shaping filter, ete.A scalable QAM modulate platform was implemented. It can generate some multimode QAM IF signals,the bit rate of which is up to 256Mbps.It can be used in the measure of high speed QAM demodulator.