As a region with volcanic activity, Indonesia has mountain ranges, with its highest peak on Papua, with Puncak Jaya, standing 4,884 meters (16,024 feet) above sea level. Major rivers in Indonesia include the Mahakam and Barito rivers, and the country's largest lake is Lake Toba in Sumatra.
To compensate, analog signals are amplified, ad digital signals are regenerated through repeaters. In a Half-duplex transmission, signals can travel in both directions over a medium BUT in only one direction at a time. When signals can travel in both directions over a medium simultaneously, the transmission is considered full duplex. A form of transmission that allows multiple signals to travel simultaneously over one medium is known as multiplexing. In multiplexing, the single medium is logically separated into multiple channels, or sub channels. Throughput is the amount of data that the medium can transmit during a given period of time.
The aim of pulse modulation methods is to transfer a narrowband analog signal, for example a phone call over a wideband baseband channel or, in some of the schemes, as a bit stream over another digital transmission system.igital modulation methods can be considered as digital-to-analog conversion, and the corresponding demodulation or detection as analog-to-digital conversion. The changes in the carrier signal are chosen from a finite number of M alternative symbols (the modulation alphabet).