DDC based channelizer design
Oğuzhan Koşar, Murver Kırcı, Enes Karav · 2018
After some research it has been observed that CIC filters are generally used in DDC based channelizer design. However, each of the different DDC techniques has several advantages and disadvantages over other techniques. For this reason, DDC techniques have been studied in detail and it has been analyzed which technique can be more efficient in which situations. MATLAB Simulink platform was used to design channellizer. The components used in Simulink were selected as part of Xilinx FPGA family. In addition, the designed systems were synthesized in Xilinx ISE platform and usage of the resources was compared. Firstly, the widely used CIC based channelizer is designed. The second method is bandpass filter based channelizer. Finally, the structure of DDC-Tree channelizer has been examined. FM signal is used as input signals. They are sampled at 21875 MHz. Also, the channellizers are designed for system with 64 channels.