一种高效动态数字信道化方法

An efficient dynamic digital channelizer

针对宽带数字接收信号中存在多个非均匀分布且动态变化的信道的情况,提出了一种高效动态数字信道化方法.该方法基于信号重构理论,将接收信号均匀划分成多个子带,根据能量检测环节将属于同一信道的相邻子带输入到相应的综合滤波器组,输出即为该信道的基带信号.信道覆盖子带个数变化时,只需根据能量检测结果改变综合滤波器组的系数,因而具有一定的自适应特点.

An efficient dynamic digital channelization method was proposed to deal with the problem of the existance of multi-channels non-uniformly distributed and dynamically changed in wideband received signal. This method is based on signal reconstruction theory. It splits the received signal into uniformly sub-bands, then puts the adjacent sub-bands of the same channel into a special synthesis filter bank, and the output is the baseband signal of this channel. When the number of sub-bands is changed, coefficients of the synthesis filter banks are changed according to the results of energy detection. It is proved that the channelization method is adaptive.