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在数字通信系统中巴克码主要用于信号的帧同步,其特点是具有比较尖锐的自相关函数,以便于与随机的数字信息相区别,同时易识别,伪同步出现的可能性很小。基于VHDL硬件描述语言,设计了一款13位巴克码发生器电路,并在QuantusⅡ环境中对其进行了功能仿真与时序仿真,然后在FPGA芯片中对设计的电路进行了硬件验证。结果表明,基于VHDL的巴克码发生器能够准确地产生巴克码信号,达到了预期效果。
In the digital communication system, Barker Code is mainly used for the signal frame synchronization, which is characterized by a relatively sharp autocorrelation function, so as to distinguish it from random digital information. At the same time, the possibility of easy identification and pseudo-synchronization appears is very small. Based on the VHDL hardware description language, a 13-bit Barker code generator circuit is designed, and its function and timing simulation are carried out in a Quantus II environment. Then the designed circuit is verified by hardware in the FPGA chip. The results show that the Barker code generator based on VHDL can accurately generate Barker code signals, and achieve the expected results.