Constraint relation of the information capacity and the bit error ratio of the binary memoryless digital channel
Xiaoping Zhang · Journal of Lanzhou University · 2007
In this paper,the mutually constraint relations between the information capacity and the bit error ratio of the binary memoryless digital channel have been studied based on the classical definitions of the information capacity and the bit error ratio.The results indicate that the information capacity and the bit error ratio do not have the one to one corresponding relation in general cases.Under the case of asymmetrical channel,the information capacity is the maximum,which does not signify that its bit error ratio is the minimum but that the information capacity will increase along with the reduction of the bit error ratio.Only under the case of symmetrical channel,we can not only have the maximum information capacity, but also the minimum bit error ratio.