Pulse code modulation is a technique used in communication systems to transmit data by varying the duration of a signal. This allows for efficient transmission...
Pulse code modulation is a technique used in communication systems to transmit data by varying the duration of a signal. This allows for efficient transmission over limited bandwidths, making it particularly useful for wireless channels with competing signals.
In pulse code modulation, a signal is divided into shorter "on" and "off" intervals called pulse durations. These durations can vary in length, with shorter pulses representing data 1 and longer pulses representing data 0. The timing of these pulses is precisely controlled to represent the binary data being transmitted.
The pulse code modulation scheme is particularly effective when combined with other modulation techniques, such as frequency shift keying (FSK), where multiple frequency values are used to represent the data. This enables efficient encoding and transmission of complex signals over channels with limited bandwidths.
Here are some examples of how pulse code modulation can be implemented:
In radio communication, pulse code is used for data transmission. The signal is divided into short "on" and "off" pulses, with the length of the pulses representing the binary data being transmitted.
In wireless communication, pulse code is used for channel bonding, where multiple devices can share a single frequency band.
In fiber-optic communication, pulse code is used for high-speed data transmission over long distances