基于DSP的2FSK实现  

Realization of 2FSK Modulation Based on DSP Chip

作　　者：邱雅[1] 李兵[1] 肖乐[1] 

机构地区：[1]西华大学数学与计算机学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2009年第6期62-65,共4页Journal of Xihua University:Natural Science Edition

摘　　要：DSP芯片在现代通信领域得到了广泛的应用,基于DSP芯片信号处理的特点,用TI公司的TMS320C6713设计数字振荡器实现2FSK的调制,用迭代法产生正弦波,并采用差分检波算法对信号进行解调,该算法计算量小,易于实现。仿真结果表明,该设计方案完全能达到设计要求。DSPs are widely applied in modem communication field. According to the signal processing features of DSPs, the digital modulation of 2FSK signal is realized based on the digital oscillator, which is composed of DSP chip TMS320C6713 offered by TI com- pany. Sinusoid signal is produced by iteration technique. And difference detection algorithm is used for demodulation of 2FSK signal. Comparing with digital quadrature demodulation algorithm, the approach omits local carrier recovery and costs less computation , so it is easier to realize. Simulation results show that this approach can meet the design requirements.

关 键 词：频移键控 DSP 数字振荡器 差分检波 

分 类 号：TN911.72[电子电信—通信与信息系统]