摘要
阐述了64QAM调制的基本原理,针对TI公司生产的TMS320C6455芯片的特性提出了一种高效的实现方案,将调制星座图转化为表格,利用查表的形式实现调制。针对32 bit寄存器设计了大端模式取比特方法,并对程序中最难实现的除法设计了一种快速简单的实现方式。星座图映射证明本方案能够正确、快速地实现调制。
This paper firstly describes the basic principle of 64QAM modulation,then according to the characterristics of TMS320C6455 chip that produced by TI company, an efficient implementation scheme is proposed. Modulation is implemented using look-up table. For 32-bit registers ,this paper designes a method of big endian mode to take bits. For division, the most difficult to achieve in the program, a quickly and simple scheme is designed. The program can quickly achieve the correct modulation.
出处
《电子技术应用》
北大核心
2012年第5期43-45,共3页
Application of Electronic Technique
基金
国家科技重大专项项目"TD-LTE无线综合测试仪表开发"(2009ZX3002-009)
关键词
查表
大端模式
DSP实现
look-up table
big endian mode
DSP realization
