最佳相位的多载波QAM  

Opti-phase-based Multicarrier QAM

作　　者：何健标[1] 向潞璐[1] 

机构地区：[1]深圳技师学院电子通信系通信教研室,广东深圳518000

出　　处：《电视技术》2013年第9期175-179,共5页Video Engineering

摘　　要：对FPGA实现多载波QAM进行了研究,提出最佳相位的多载波调制算法以提高各路子载波的输出功率,并设计出高精度、低复杂度的DDFS以实现符合最佳相位关系的子载波合成。仿真及测量结果表明,最佳相位的多载波QAM具有更优的输出信号质量和更少的逻辑资源消耗。The multicarrier QAM implemented in FPGA is investigated. An algorithm of opti-phase-based multicarrier QAM （OPBMQ） is presented to increase the output power of each subcarrier. Besides, a method for high-precision, low-complexity DDFS is introduced to synthesize the opti-phase subcarrier waves. Simulation and measurement results show that the OPBMQ has higher performance and lower hardware resource consumption.

关 键 词：多载波QAM FPGA 最佳相位序列 DDFS 

分 类 号：TN933.1[电子电信—信号与信息处理]