Zhuolie Xiong,Shenji Zhang. Realization of Modulation Mode Based on Combination with DDS and FPGA Abstract The paper comes up with a point of view: the inflexion can be eliminated,the attenuation of the outside of main lobe of frequency spectrum can be quickened, and the need of decreasing radiated interference from the near channel in the communication system can be satisfied by the means that frequency abrupt change is converted into frequency gradual change in the ramped FSK modulation mode combined with DDS and FPGA.[J]. Telecommunications Science, 2006, 22(6): 53-56.
