自适应调制编码技术  

Adaptive Modulation and Coding

作　　者：单超[1] 张邦宁[2] 

机构地区：[1]解放军理工大学通信工程学院研究生4队,江苏南京210007 [2]解放军理工大学通信工程学院卫星通信系

出　　处：《军事通信技术》2005年第1期46-50,共5页Journal of Military Communications Technology

摘　　要：自适应调制编码是一种提高信道利用率的有效方法。文中从信道容量的角度出发,对自适应调制编码技术之所以可以有效提高信息传输速率的原理进行了介绍,并比较了自适应与非自适应方法的性能差异。最后,从实际应用的方面考虑,还对影响自适应调制编码性能的信道估计误差和反馈延时进行了论述。Adaptive modulation and coding, namely AMC, is an effective way to promote channel efficiency. Based on some relevant literature, the paper firstly analyzed the principles of AMC based on the channel capacity, and then made the performance comparisons between the AMC with conventional methods. Finally it presented some factors that influence AMC performance, such as the estimate errors of channel and delay of feedback.

关 键 词：信道估计 频谱效率 反馈延时 

分 类 号：TN911[电子电信—通信与信息系统]