Research Ideas: how to generate linear and non-linear combinations of channels?

RT,最近要被这个课题搞成痴呆了
一张图片,4个separated channels,how to generate linear (and non-linear) combinations of channels 以及 如何narrow down search boundary?

感觉论坛要开个学术区了:crazy_face:

大概率问错了地方:joy:
上这个论坛的不都是吃喝玩乐瞎吐槽么

唉,想着论坛卧虎藏龙,说不定就问出点啥了呢