Digital transmission systems rely on pulse shape and bandwidth to ensure optimum and reliable channel transmission quality in a transmission channel. Each parameter is defined by the power spectral density or spectrum shaping of the binary sequences and is, therefore, directly related to the type of code used. In addition, while the ideal sin(x)/(x) pulse shape cannot be achieved in practice, most pulse shaping techniques, such as AMI, closely approximate this requirement

• What two factors determine good digital transmission performance?