What is Analog Communication System
An analog communication system conveys information using continuous signals that fluctuate in amplitude, phase, or frequency over time. These signals are equivalent to the original information, such as sound or light. Key components are a transmitter, which turns the information into an analog signal; a transmission medium, such as cables or air; and a receiver, which decodes the signal back into its original form. Common examples are AM and FM radio, analog television, and telephone networks. Analog systems are prone to noise and signal degradation but are straightforward in design and may effectively transport data over great distances.
What is Digital Communication System
A digital communication system transfers information using discrete signals, commonly represented as binary code (0s and 1s). It includes three basic components: a transmitter that encodes the information into a digital signal, a transmission medium like optical fiber or wireless channels, and a receiver that decodes the signal back into its original form. Digital systems provide benefits such as noise resistance, improved data integrity, and effective use of bandwidth. Examples include digital television, internet communications, and mobile phone networks. These systems provide dependable long-distance communication and support sophisticated technologies like encryption and error correction.
Difference between Analog & Digital Communication Systems
| Analog Communication | Digital Communication |
|---|---|
| 1. The Signal is continuous in nature | 1. The signal is represented in terms of Binary Digits |
| 2. It is less tolerable to noise | 2. More Tolerable to noise |
| 3. Bandwidth is less | 3. Bandwidth is more |
| 4. It is continuous in time and amplitude | 4. It is discrete in time and Amplitude |
| 5. Repeaters are the amplifiers, which also amplifies the noise by degrade the quality of the system | 5. Regenerators are the amplifiers which produces a new wave after recovering from the received waveform. Then in the DC noise does not accumulate |
| 6. Less Efficient for noise immunity & Quality | 6. More Efficient for noise immunity & Quality |
Conclusion
In conclusion, both analog and digital communication methods play vital roles in transferring information. Analog systems, with their continuous signals, are crucial in many conventional communication techniques, but are prone to noise and signal deterioration. Digital systems, using discrete signals, provide greater dependability, noise resistance, and efficiency, making them suited to present communication demands. The development from analog to digital technology has considerably increased the quality and capabilities of global communication networks, enabling a wide variety of applications from broadcasting to internet services and mobile communications.
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