The design made some progress in data-encoding of the physical layer, the typeofmodulation and some other key technologies, and the performance of it was improved greatly.
该设计在物理层数据编码、调制方式等一些关键技术方面进行了改进，性能上有很大的提高。
2
The objective of automatic modulation identification is to decide the modulation type and estimate the modulation parameters without any priori knowledge about the signal information content.
The objective of automatic modulation identification is to decide the modulation type and estimate the modulation parameters without any priori knowledge about signal contents.