截短平衡Gold码的统计特性分析

在给出搜索和产生平衡Gold码方法的基础上,给出了截短平衡Gold码的概念,提出了一种对平衡Gold码进行截短的方案。在扩频通信中,扩频速率受扩频系统特定的时钟周期所约束,使得地址码序列长度取决于系统的时钟速率与信息速率商的大小,限制了平衡Gold码在实际工程中的应用。采用截短平衡Gold码截短码具有更广泛的应用能力。仿真结果表明,对平衡Gold码进行合适的筛选和截短后得到的序列仍具有较好的统计特性,可以作为工程应用中对码长有不同要求的扩频通信地址码。

Analysis of the statistic characteristics of the truncated balance Gold code

Based on the method of generating the balance Gold code,the method of truncating balance Gold code is put forward.In the spectrum spread communications,the spectrum spread rate is held in the clock period,and the sequence length of address code lies on the quotient of clock rate with information rate.So,the application of the balance Gold code is limited in the practical engineering.The truncated code of the balance Gold code has wider application with the method.The simulation results show that the balance Gold code sequence obtained after proper selection and truncating still preserves good statistic characteristics.It can be used as address code of spread spectrum communications and satisfies the particular requirements of some spread spectrum communications systems for address code.