改进型FM-DCSK通信方案的研究  

Improved FM-DCSK communication scheme

作　　者：邓萍[1] 蒋国平[1] 

机构地区：[1]南京邮电大学自动化学院,江苏南京210003

出　　处：《西安邮电学院学报》2006年第3期5-8,共4页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：江苏省高校"青蓝工程"计划项目(JS200407);江苏省高校自然科学基金重点项目(04KJA517092)

摘　　要：调频差分混沌键控(FM-DCSK)的比特能量是常数,可以提高传输速率,但和CSK相比较,性能上仍有差距。改进型的FM-DCSK采用分组分帧结构,即一组信息符号位紧接着一串训练信号之后,且信息符号数大于训练信号数,并将自适应横向滤波器(ATF)应用到解调端,进一步提高传输码率,降低发送的功率。仿真结果表明,系统的性能得到较大改善。The energy per bit of FM- DCSK is kept constant to increase the transmission rate. But the perfor- mance of CSK is yet better than that of FM - DGSK. The package - framed FM - DC,SK is developed in the modulation of the improved FM - DCSK communication scheme, i. e. , a package of messages just follows a string of training signals, and the number of messages is larger than that of training signals. An Adaptive Transversal Filter （ATF） is applied in the demodulation. This scheme has a more rapid attainable data rate and low power of transmittal. It is shown by simulation that the performance of such communication scheme is greatly enhanced.

关 键 词：DCSK 改进型FM-DCSK 分组分帧FM-DCSK 自适应横向滤波器(ATF) 误码率(BER) 

分 类 号：TN914[电子电信—通信与信息系统]