Maximum Data Rate Determination of a Telephone Transmission Channel

Abstract

The transmission channel is a medium that transfers the information from the source to the destination. So many forms of media are available; some of them are pair of wires, a coaxial cable, a radio path, or an optical fiber. Every channel presents some amount of attenuation or loss, so, the transmitted power decreases progressively with increasing distance. Information signal is also distorted in the channel because of different attenuations at different frequencies. Signals usually contain components at many frequencies and if some are attenuated and some are not, the shape of the signal changes. This change is known as distortion. Note that a transmission channel often includes many speech or data channels that are multiplexed into the same cable pair or fiber. In this paper we present the determination of maximum data rate of a telephone channel.