Abstract
Channel is a channel of information transmission. And it take on the task of information transmission and storage. Channel is an important part of communication system. Channel capacity is the size of the amount of information can be transmitted. It has important significances in reality. However, calculating the channel capacity is a complex issue. So we must use the mathematical software Matlab to solve this problem.
The first part of the article, it introduces channel capacity by the basic concepts, principles and the classification of channel models. On this basis, introduce and discuss the calculation steps of the general channel capacity.
The second part of the article, it introduces the Iterative algorithm of the channel capacity and implementes the iterative algorithm in Matlab. After that, by realizing the feasibility of the procedure, we make some examples. And also analyze the procedure. Then compare it with Lagrange multiplier method.
