摘要
PGC数字解调系统中,随着采样率的提高和光纤阵列规模的增大,所要处理的数据量成倍增长,计算精度也有更严格的要求。传统数字信号处理系统的浮点处理能力较低,已经不能满足PGC数字解调系统的应用需求。提出了定点化的PGC数字解调算法,并应用于基于龙芯2E处理器的并行信号处理平台。实验证明,该方法在计算精度和处理能力上均满足PGC数字解调系统的应用需求。
With the increases of the sample rate and the fiber array size, the processing power and the processing accuracy of PGC digital demodulation system are improved. Because of the traditional DSP system＇ s low float-point processing power, it can＇t meet the demand of the PGC digital demodulation system. A fixed-point algorithm of PGC digital demodulation and its implementation on the parallel digital signal processing platform based on the Godson-2E processor are introduced. The results of the experiments show that the proposed method can meet the processing power requirements and the processing accuracy requirements of PGC digital demodulation system.
出处
《电声技术》
2012年第4期51-55,共5页
Audio Engineering
