基于极化比参数的零导数正交搜索优化方法

Zero Differential Orthogonal Searching Scheme for Optimal Polarization Based on the Polarization Ratio Parameters

针对基于极化比参数的信干噪比等式,提出了一种零导数正交搜索极化优化方法并进行了详细的讨论。该方法的关键是:沿着一条特殊基线进行的第一次局部优化就基本接近全局最优点,接着进行正交向零导数搜索,搜索过程也只需简单地利用前一次局部最优解的结果。经过大量试验,给出了参数范围,结果表明该方法基本上只需几步计算后就找到了全局最优点。

For the signal-to-interference-and-noise-ratio（SINR） equation based on the polarization ratio parameters, an optimal polarization scheme called zero differential orthogonal searching （ZDOS） was suggested and discussed in detail. There are three key points in ZDOS： the global optimal point of the SINR is approached to by the first optimization along a special line, then the searching processes are designed along two orthogonal lines to search the minimal differential in each direction, and this searching method uses only the last local optimal solutions simply. Many experiments were made, and the range of the parameters was given. These experimental results show that ZDOS scheme takes generally several steps to reach the global optimum.