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介绍了8FSK调制的原理,给出了8FSK调制码变换器主要模块的FPGA实现方法。该变换器运用VHDL编程,以Quartus Ⅱ作为软件仿真工具,下载到ALTERA公司ACEX系列FPGA芯片EP2C35F67C6上实现了8FSK调制码变换器。该变换器用于数字频带系统中,具有较高的频谱利用率。
The principle of 8FSK modulation is introduced and the FPGA implementation method of the main module of 8FSK modulation code converter is given. The converter uses VHDL programming to Quartus Ⅱ as a software simulation tool, downloaded to ALTERA company ACEX series FPGA chip EP2C35F67C6 realized 8FSK modulation code converter. The converter is used in digital band systems with high spectral efficiency.