我们所要选择的一种同步启动码组是一个长度为100的二元制序列,它的优化设计是个辣手问题。因为同步启动信息的提取不是直接利用二元制波形在时域中的自相关特性,而是将它对数十个数据音进行复杂的调制,再对调制后的群信号进行即时谱分析,从谱过程的变化规律来鉴别信号的有无和是否达到同步点的。因此,一般的二元制波形的自相函数分析法不适用于我们的具体情况。由于过程的数学模型是确知的,因此,对于确定的码组其性能可以 We want to choose a synchronous start code group is a binary sequence of length 100, its optimal design is a hot issue. Because the synchronous start information extraction is not the direct use of the binary system in the time domain autocorrelation characteristics, but rather it dozens of data tones for complex modulation, and then the modulated group signal for real-time spectrum analysis, from Spectral changes in the process to identify whether the signal and the synchronization point. Therefore, the general binary analysis of self-phase function of the waveform is not suitable for our specific situation. Since the mathematical model of the process is well-known, its performance can be determined for a given code group