基于FPGA的全数字64QAM调制解调器设计

Design of All-Digital 64QAM Modulator and Demodulator Based on FPGA

针对QAM调制解调技术在有线电视领域的广泛应用,提出了一种基于FPGA的全数字64QAM调制解调方案,采用VHDL等硬件描述语言进行模块设计,给出各模块时序仿真图,并对系统中涉及到的定时同步问题进行阐述,最终正确实现64QAM全数字调制解调。

Aiming at the application of QAM technique in the field of cable television,this paper presents a scheme of all-digital 64QAM modulation and demodulation based on FPGA. It gives the description of each module designed in VHDL,shows its timing simulation result and describes the timing problem involved in this system. Finally all-digital 64QAM modulation and demodulation is correctly realized.