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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 coding is an effective way to improve channel utilization. From the view of channel capacity, this paper introduces the principle that adaptive modulation and coding can effectively improve the information transmission rate, and compares the performance difference between adaptive and non-adaptive methods. Finally, from the aspect of practical application, the channel estimation error and feedback delay that affect adaptive modulation and coding performance are also discussed.