Difference between analog and digital cellular system
Answers
Difference between analog and digital cellular system?
Analog was used with first-generation cellular technology, and digital cellular was the second generation and beyond.
Cellular, or mobile, phone systems use, in part, wireless radio transmissions to carry conversations and other information. An analog system uses something like FM radio technology, where a carrier signal of a defined frequency is modulated by imposing upon it the analog (continuously varying) voice patterns on the transmit side and then decoding the signal at the receive end, where the receiver earpiece is caused to vibrate at the same frequencies and proportional levels as did the source sound. With digital technology, the actual analog pattern of voices isn't directly layered onto the carrier. Rather, the voice signal, originating from the microphone in an analog pattern, is encoded by the telephone circuitry into a digital code of ones and zeroes. The carrier signal is modulated by the simple 1s/0s digital pattern. At the receiving end, the binary code is translated back into an analog representation, which drives the earpiece speaker, reproducing the original spoken sounds.
Answer:
Analog messages are characterized by data whose values vary over a continuous range.
Digital messages are constructed with a finite number of symbols.
Explanation: