signal model的用法和樣例：
例句
- Ambiguities arising from the model have also been analyzed, and solutions to them are provided.
文中還對通過信號模型估值存在的模糊問題進行了分析，並提出了解決辦法。 - However, an explicit algorithm flow for a complex signal model, which is usually used in communication theory, hasn't yet been given in literature.
在通信理論中經常使用到複數信號模型，但目前尚未有文獻給出在該模型下明晰的演算法流程。
