atcm meaning in Chinese

大气输送气候学模式
第十二届亚洲科技与数学研讨会
科技与数学研讨会

In the third part , a new adaptive trellis coded modulation ( atcm ) solution was presented . we analysis the best coding scheme in different channel modes , different snr and different demodulation solution
仿真结果表明，在解调观测长度相同的情况下，其性能和多码元差分解调方式大致相同，但大大简化了接收机结构。
The atcm solutions in many references are constructed by first choosing a specified code , such as coset code or multi dimension tcm , then change the information rate by adopting different modulation constellation collection and different way to divide the modulation constellation collection
已有文献的自适应格形编码调制通常是先确定编码方案(如采用coset码或多维格形编码调制) ，通过采用不同的调制星座集合，和不同调制星座集合划方式实现自适应。
Some critical coding and modulation techniques in uav communication have been discussed in this thesis , including differential phase keying ( dpsk ) , modulation multiple symbol detection ( msd ) , adaptive trellis coded modulation ( atcm ) , and space - time coding . this work was supported by the national defense 973 project . uav communication has many sophisticated technologies
本论文在国防973项目“无人机信息传输理论与方法研究”的资助下，结合现代数字通信领域的新技术，根据无人机通信的特点和需求，对其中的几项关键技术做了深入研究。