Based on CPLD frequency keying system design research
Chen Meng-jia · Microcomputer Information · 2008
Long distance, large capability and high quality of transmission are required in modern communication system. Modulation and demodulation, which is one of the most key techniques in communication, has been always an important aspect people research. This thesis primarily focused on the modulation and demodulation system and the design technique of CPLD, and also discussed and simulated the digitalized FSK、4FSK systems based on CPLD. The author utilized VHDL to be the hardware describing language of design and has been waveform simulated on the basis of a CPLD development platform Maxplus2 developed by Altera. TOP-TO-DOWN is the main feature of this design. CPLD modeling has firstly been done for each module of system, then the design content divided into smaller parts layer to layer, and finally achieved both in hardware and software in details. The whole program has passed the hardware debugging on CPLD experiment exploitation board which takes EPM7128SLC84-7 to be the main chip.