Pulssietäisyyskoodauksen
Pulssietäisyyskoodaus, often abbreviated as PAM, is a method used in telecommunications and digital signal processing to represent digital data as a series of pulses. Instead of simply turning a signal on or off (as in binary pulse-amplitude modulation), PAM uses discrete levels of amplitude to encode information. A common form is Pulse Amplitude Modulation (PAM-4), which utilizes four distinct amplitude levels. Each level can represent two bits of data, allowing for twice the data rate compared to a simple binary system with the same symbol rate.
The process involves modulating the amplitude of a carrier signal according to the digital data to be
PAM techniques are widely employed in various applications, including Ethernet standards, high-speed serial data links, and